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Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

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Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

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The following discussion should be read in conjunction with the audited consolidated financial statements and the related notes in Part II, Item 8, of this Annual Report on Form 10-K. In addition to historical information, the following discussion also contains forward-looking statements that include risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of certain factors, including those set forth under the heading “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10-K.

Business Overview

We are an automated global electronic broker and market maker (although, we have substantially exited our options market making business - see Note 2 - Discontinued Operations and Costs Associated with Exit or Disposal Activities to the audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K). We custody and service accounts for hedge and mutual funds, registered investment advisers, proprietary trading groups, introducing brokers and individual investors. We specialize in routing orders and executing and processing trades in securities, futures and foreign exchange instruments on more than 120 electronic exchanges and market centers around the world. Since our inception in 1977, we have focused on developing proprietary software to automate broker-dealer functions. The proliferation of electronic exchanges over nearly the last three decades has provided us with the opportunity to integrate our software with an increasing number of exchanges and market centers into one automatically functioning, computerized platform that requires minimal human intervention.

In connection with our IPO priced on May 3, 2007, IBG, Inc. purchased 10.0% of the membership interests in IBG LLC, became the sole managing member of IBG LLC and began to consolidate IBG LLC’s financial results into its financial statements. Our primary assets are our ownership of approximately 18.1% of the membership interests of IBG LLC, the current holding company for our businesses, and our controlling interest and related contractual rights as the sole managing member of IBG LLC. The remaining approximately 81.9% of IBG LLC membership interests are held by Holdings, a holding company that is owned by our founder, Chairman and Chief Executive Officer, Mr. Thomas Peterffy and his affiliates, management and other employees of IBG LLC, and certain other members. The IBG LLC membership interests held by Holdings will be subject to purchase by us over time in connection with offerings by us of shares of our common stock.

Business Segments

We report our results in two operating business segments, electronic brokerage and market making (being discontinued). These segments are analyzed separately as these are the two principal business activities from which we derive our revenues and to which we allocate resources.

Electronic Brokerage. We conduct our electronic brokerage business through certain Interactive Brokers (“IB”) subsidiaries. As an electronic broker, we execute, clear and settle trades globally for both institutional and individual customers. Capitalizing on our proprietary technology, IB’s systems provide our customers with the capability to monitor multiple markets around the world simultaneously and to execute trades electronically in these markets at a low cost, in multiple products and currencies from a single trading account. We offer our customers access to all classes of tradable, primarily exchange-listed products, including stocks, bonds, options, futures, forex and mutual funds traded on more than 120 exchanges and market centers in 29 countries and in 24 currencies seamlessly around the world. The emerging complexity of multiple market centers has provided us with the opportunity of building and continuously adapting our order routing software to secure excellent execution prices.

Our customer base is diverse with respect to geography and segments. Currently, approximately 68% of our customers reside outside the U.S. in over 200 countries and territories, and over 50% of new customers come from outside the U.S. Approximately 65% of our customers’ equity is in institutional accounts such as hedge funds, financial advisors, proprietary trading desks and introducing brokers. Specialized products and services that we have developed are successfully attracting these accounts. For example, we offer prime brokerage services, including capital introduction and securities lending to hedge funds; our model portfolio technology and automated share allocation and rebalancing tools are particularly attractive to financial advisors; and our trading platform and low pricing attract introducing brokers.

We provide a host of analytical and business tools such as Investors’ MarketplaceSM, which allows wealth advisors to search for money managers and assign them to customer accounts based on their investment strategy. EmployeeTrackSM is widely used by compliance officers of financial institutions to streamline the process of tracking their employees’ brokerage activities. The Probability Lab® allows our customers to analyze option strategies under various market assumptions. Risk NavigatorSM is a real-time market risk management platform that allows our customers to measure risk exposure across multiple asset classes around the globe. Portfolio BuilderSM allows our customers to set up an investment strategy based on research and rankings from top research providers and fundamental data. IBKR Asset Management recruits registered financial advisors, vets them, analyzes their investment track records, groups them by their risk profile, and allows retail investors to assign their accounts to be traded by one or more advisors. In addition, our Greenwich Compliance affiliate offers direct expert registration and start-up compliance services, as well as answers to basic day-to-day compliance questions for experienced investors and traders looking to start their own investment advisor firms. Greenwich Compliance professionals have regulatory and industry experience, and they can help investment advisors trading on the IB platform meet their registration and compliance needs.

We have recently expanded the range of financial services we offer our customers through our Integrated Investment Management program, where customers can perform many different types of transactions from a single account. Our Interactive Brokers Debit Mastercard® allows customers to spend and borrow directly against their account and to make purchases and ATM withdrawals anywhere Debit Mastercard® is accepted around the world. Our Insured Bank Deposit Sweep Program provides customers with up to $2,500,000 of Federal Deposit Insurance Corporation (“FDIC”) insurance on their eligible cash balances in addition to the existing $250,000 Securities Investor Protection Corporation (“SIPC”) coverage, for a maximum coverage of $2,750,000. Bill Pay allows customers to make electronic or check payments in the U.S. It can be configured for one-time or recurring payments and permits customers to schedule future payments. In addition, our customers can now have their paychecks or other recurring payments directly deposited into their brokerage account.

Market Making. As previously announced, we transferred our U.S. options market making operations to Two Sigma Securities, LLC effective September 29, 2017 and also exited the majority of our options market making activities outside the U.S. by December 31, 2017. We intend to continue conducting certain proprietary trading activities in stocks and related instruments to facilitate our electronic brokerage customers’ trading in products such as ETFs, ADRs, CFDs and other financial instruments, as well as exchange-traded market making activities in a few select markets outside of the U.S. However, we do not expect the facilitation activity to be of sufficient size as to require reporting as a separate segment after we discontinue our options market making activities.

As a market maker, in the few select markets in which we operate, we provide liquidity by offering competitively tight bid/offer spreads over a broad base of tradable, exchange-listed products. As principal, we commit our own capital and derive revenues or incur losses from the difference between the price paid when securities are bought and the price received when those securities are sold. Because we provide continuous bid and offer quotations and we are continuously both buying and selling quoted securities, we may have either a long or a short position in a particular product at a given point in time. Our entire portfolio is evaluated many times per second and continuously rebalanced throughout the trading day, thus minimizing the risk of our portfolio at all times.

The operating business segments are supported by our corporate segment which provides centralized services and executes our currency diversification strategy.

Business Environment

During 2018, U.S. market volatility was significantly higher than in the prior year, reflecting greater geopolitical and economic uncertainty. Equity market indices around the globe were predominantly down, with the S&P 500 index declining 6%, less than the more substantial declines in most European and Asian markets. U.S. interest rates continued on an upward path, while trends in benchmark rates of other currencies were mixed.

Among our customer base, volatility is strongly correlated with customer trading activity across product types. With positive customer account and asset growth, we would expect our customers’ trading activity to outpace general market volume measures, especially in periods with higher volatility. In addition, higher benchmark interest rates give us an opportunity to earn more net interest income on fully interest-sensitive assets.

Amid this uncertain market environment, customer account growth remained robust, with total customer accounts increasing 24% from 2017 to 598 thousand. Customer equity increased 3% to $128.4 billion as healthy inflows from customers more than offset securities market declines impacting customers’ existing positions. Institutional customers, such as hedge funds, mutual funds, introducing brokers, proprietary trading groups and financial advisors, comprised approximately 51% of total accounts and approximately 65% of total customer equity at the end of 2018. We continue to attract large customers that seek our superior technology and execution capabilities, high interest rates on cash balances, and low costs, as well as our securities finance services, including margin lending and short sale support.

The following is a summary of the key profit drivers that affect our business and how they compared to 2017:

Global trading volumes. According to data received from exchanges worldwide, volumes in exchange-listed equity-based options increased by approximately 27% globally and 23% in the U.S. for the year ended December 31, 2018, compared to 2017. During 2018 we accounted for approximately 4.2% (5.1% in 2017) of the exchange-listed equity-based options volume traded worldwide (including options on ETFs and stock index products), and approximately 6.5% (7.7% in 2017) of exchange-listed equity-based options volume traded in the U.S. This decrease was primarily due to exiting our options market making activities in the U.S. It is important to note that although options volume is a readily comparable measure, it reflects only a portion of the volume that generates our commission revenues. See tables on pages 55-56 of this Annual Report on Form 10-K for additional details regarding our trade volumes, contract and share volumes and brokerage statistics.

Volatility. Based on the Chicago Board Options Exchange Volatility Index (“VIX®”), the average U.S. market volatility increased to 16.6 in 2018, up 49% from the average of 11.1 in 2017. Higher volatility improves our electronic brokerage performance because it generally corresponds to higher trading volumes. In 2018, as the VIX increased, we saw a positive impact on customer trading activity, which rose 25%, and our commissions revenue, which rose 20%.

Interest Rates. The U.S. Federal Reserve continued its series of increases in the target federal funds rate with hikes in March, June, September and December 2018, while rates in other currencies were mixed. Increases in benchmark rates have generally led to higher net interest income and wider net interest margin. Because we pay among the highest rates in the brokerage industry on qualified customer cash balances and charge among the lowest rates on margin borrowings, we attract customers who seek to maximize their yields and minimize their costs. As our margin balances are tied to benchmark rates, rising U.S. interest rates have enhanced the interest we receive on our U.S. dollar customer margin balances. Rising rates also increase the interest we earn on our segregated cash, the majority of which is invested in U.S. government securities and related instruments. Higher rates also raise our interest expense, as we pass along more interest to our customers. We believe our low rates on margin borrowings and high yields on qualified cash balances are important factors that attract customers to our platform.

While the interest we pay on customer cash balances and the interest we earn on customer margin loans is based on fixed spreads around benchmark rates, additional net interest income is earned on non-interest bearing customer balances, e.g., on securities accounts with less than $100,000 in equity, and on rising balances. Electronic brokerage net interest income grew 38%, compared to 2017. During this time, average customer credit balances rose 6% due, in part, to an inflow of new accounts, and average customer margin loan balances increased 26%, due to our customers’ appetite for increased leverage, along with expanded prime broker financing.

Currency fluctuations. As a global electronic broker and market maker trading on exchanges around the world in multiple currencies, we are exposed to foreign currency risk. We actively manage this exposure by keeping our net worth in proportion to a defined basket of 14 currencies we call the “GLOBAL” to diversify our risk and to align our hedging strategy with the currencies that we use in our business. Because we report our financial results in U.S. dollars, the change in the value of the GLOBAL versus the U.S. dollar affects our earnings. During 2018 the value of the GLOBAL, as measured in U.S. dollars, decreased 1.14% compared to its value as of December 31, 2017, which had a negative impact on our comprehensive earnings for 2018.

A discussion of our approach for managing foreign currency exposure is contained in Part II, Item 7A of this Annual Report on Form 10-K entitled “Quantitative and Qualitative Disclosures about Market Risk.”

Financial Overview

Diluted earnings per share were $2.28 for the year ended December 31, 2018 (“current year”), compared to diluted earnings per share of $1.07 for the year ended December 31, 2017 (“prior year”). The calculation of diluted earnings per share is detailed in Note 4 to the audited consolidated financial statements, in Part II, Item 8 of this Annual Report on Form 10-K.

Diluted earnings per share on comprehensive income were $2.09 for the current year, compared to $1.22 for the prior year.

In connection with our currency diversification strategy (i.e., GLOBALs) as of December 31, 2018, approximately 30% of our equity was denominated in currencies other than the U.S. dollar. In the current year, our currency diversification strategy decreased our comprehensive earnings by $99 million (compared to an increase of $175 million in the prior year), as the U.S. dollar value of the GLOBAL decreased by approximately 1.14%, compared to its value as of December 31, 2017. The effects of our currency diversification strategy are reported as (1) a component of other income in the consolidated statement of comprehensive income and (2) OCI in the consolidated statement of financial condition and the consolidated statement of comprehensive income. The full effect of the GLOBAL is captured in comprehensive income.

Consolidated: For the current year, our net revenues were $1,903 million and income before income taxes was $1,196 million, compared to net revenues of $1,702 million and income before income taxes of $1,049 million in the prior year. The increase in income before income taxes in the current year was mainly driven by a 36% increase in net interest income and a 20% increase in commissions, partially offset by a 52% decrease in other income. Our pre-tax profit margin was 63%, compared to 62% for the prior year.

The results for the prior year were negatively impacted by the effects of the Tax Cuts and Jobs Act (the “Tax Act”), enacted on December 22, 2017. The Tax Act significantly revised U.S. corporate income tax law by, among other things, reducing the corporate income tax rate from 35% to 21% and implementing a modified territorial tax system that includes a one-time transition tax on deemed repatriated earnings of foreign subsidiaries. As a result of the Tax Act, the prior year includes a net reduction in consolidated earnings of approximately $84 million, of which $62 million was due to the one-time repatriation tax and a net $22 million was related to the remeasurement of our U.S. deferred tax assets at lower enacted corporate tax rates. The effects of the Tax Act are further detailed in Note 11 to the audited consolidated financial statements, in Part II, Item 8 of this Annual Report on Form 10-K.

Electronic Brokerage: For the current year, income before income taxes in our electronic brokerage segment increased $317 million, or 37%, compared to the prior year, driven by higher net interest income, commissions revenue and other income, partially offset by higher expenses in the areas of general and administrative; execution, clearing and distribution fees; and employee compensation and benefits. Net revenues increased 31%, mainly from a 38% increase in net interest income, driven by higher Federal Funds rates and higher average customer credit and margin loan balances; a 20% increase in commissions, primarily driven by higher options and futures contract volumes; and a 56% increase in other income led by a $9 million net mark-to-market gain on our U.S. government securities portfolio (compared to a $12 million net mark-to-market loss in the prior year), higher net mark-to-market gains on other investments and higher fees earned from our FDIC sweep program. Pre-tax profit margin was 64% for the current year and 61% for the prior year. Customer accounts grew 24% and customer equity increased 3% from the prior year. For the current year, total DARTs for cleared and execution-only customers increased 25% to 862 thousand, compared to 688 thousand for the prior year.

Over an extended period in 2018, a small number of the Company’s brokerage customers had taken relatively large positions in a security listed on a major U.S. exchange. The Company extended margin loans against the security at a conservatively high collateral requirement. In December 2018, within a very short timeframe, this security lost a substantial amount of its value. The customer accounts were well margined and at December 31, 2018 they had incurred losses but had not fallen into any deficits. Margin shortfalls were met in a timely manner by delivery of additional shares by the customers. Subsequent price declines in the stock have caused these accounts to fall into deficits, despite the Company’s efforts to liquidate the customers’ positions. Through February 27, 2019, the Company has recognized an aggregate loss of approximately $47 million. The maximum aggregate loss, which would occur if the securities’ prices all fell to zero and none of the debts were collected, would be approximately $59 million. The Company is currently evaluating pursuing the collection of the debts.

The ultimate effect of this incident on the Company’s results will depend upon market conditions and the outcome of the Company’s debt collection efforts. Our Risk Management Committee continuously monitors and evaluates our risk management policies, including the implementation of policies and procedures to enhance the detection and prevention of these types of events.

Market Making: For the current year, income before income taxes in our market making segment increased $61 million, to a gain of $34 million compared to the prior year, primarily due to lower operating costs on the remaining operations and the non-recurrence of two items recognized in the prior year: $25 million in one-time exit costs related to the wind-down of our options market making business, partially offset by an $11 million gain on the transfer of our U.S. market making business.

In the third quarter of 2017, we completed the transfer of our U.S. options market making business to Two Sigma Securities, LLC and by the end of 2017 we had exited the majority of our market making activities outside the U.S. In addition, as a result of discontinuing our options market making activities, we expect that approximately $40 million in annual net expenses will be absorbed by the electronic brokerage segment. As of December 31, 2018, on a prospective basis, approximately 98% of the resources related to the $40 million in annual net expenses have been transferred to the electronic brokerage segment and the majority of the remaining 2% is expected to be transferred during 2019.

We intend to continue conducting certain proprietary trading activities in stocks and related instruments to facilitate our electronic brokerage customers’ trading in products such as ETFs, ADRs, CFDs and other financial instruments, as well as exchange-traded market making activities in a few select markets outside of the U.S. However, we do not expect the facilitation activities to be of sufficient size as to require reporting as a separate segment after we discontinue our options market making activities.

Pursuant to the agreement with Two Sigma Securities, LLC, we have the opportunity for future income from an earn-out agreement, based on the performance of the options market making business under Two Sigma Securities, LLC’s control. Under the agreement, we would earn a share of any U.S. profits after variable costs and other agreed-upon costs for three years; and a separate share of any non-U.S. profits after variable costs for four years. The agreement provides Two Sigma Securities, LLC the opportunity to enter non-U.S. parts of this business and, while it does not preclude us from participating in those markets, the earn-out would be effective only in markets where we did not compete.

Market making, by its nature, does not produce predictable earnings. Our results in any given period may be materially affected by volumes in the global financial markets, the level of competition and other factors. Electronic brokerage is more predictable, but it is dependent on customer activity, growth in customer accounts and assets, interest rates and other factors. For a further discussion of the factors that may affect our future operating results, please see the description of risk factors in Part I, Item 1A of this Annual Report on Form 10-K.

The following two tables present net revenues and income before income taxes for each of our business segments for the periods indicated.

Net revenues of each of our segments and our total net revenues are summarized below:

Year Ended December 31,
201820172016
(in millions)
Electronic brokerage$1,842$1,405$1,239
Market making7686190
Corporate(1)(15)211(33)
Total$1,903$1,702$1,396
(1)The corporate segment includes corporate related activities, inter-segment eliminations, and gains and losses on positions held as part of our overall currency diversification strategy.

Income before income taxes of each of our segments and our total income before income taxes are summarized below:

Year Ended December 31,
201820172016
(in millions)
Electronic brokerage$1,177$860$756
Market making34(27)44
Corporate(1)(15)216(39)
Total$1,196$1,049$761
(1)The corporate segment includes corporate related activities, inter-segment eliminations, and gains and losses on positions held as part of our overall currency diversification strategy.

Net Revenues

Commissions

We earn commissions from our cleared customers for whom we act as an executing and clearing broker and from our non-cleared customers for whom we act as an execution-only broker. We have a commission structure that allows customers to choose between an all-inclusive fixed, or “bundled”, rate and a tiered, or “unbundled”, rate that offers lower commissions for high volume customers. For “unbundled” commissions, we pass through regulatory and exchange fees separately from our commissions, adding transparency to our fee structure. Commissions accounted for 41%, 38%, and 44% of our total net revenues for the years ended December 31, 2018, 2017, and 2016, respectively.

Our commissions are geographically diversified. In 2018, 2017, and 2016 we generated 32%, 32%, and 30%, respectively, of commissions from operations conducted internationally.

Interest Income and Interest Expense

We earn interest on customer funds segregated in safekeeping accounts; on customer borrowings on margin, secured by marketable securities these customers hold with us; from our investments in U.S. and foreign government securities; from borrowing and lending securities in the general course of our brokerage and market making activities; and on deposits with banks. Interest income accounted for 73%, 53%, and 43% of our total net revenues for the years ended December 31, 2018, 2017, and 2016, respectively. Interest income is partially offset by interest expense.

We pay interest on cash balances customers hold with us; for borrowing and lending securities in the general course of our brokerage and market making activities; and on our borrowings. Interest expense accounted for 24%, 13%, and 6% of our total net revenues for the years ended December 31, 2018, 2017, and 2016, respectively.

We have automated and integrated our securities lending system with our trading system. As a result, we have been able to tailor our securities lending activity to produce more optimal results when taken together with trading gains (see description under “Trading Gains” below).

Net interest income accounted for approximately 49%, 40%, and 38% of our total net revenues for the years ended December 31, 2018, 2017, and 2016, respectively.

Trading Gains

Trading gains are generated in the normal course of our market making business. Trading revenues are, in general, proportional to the trading activity in the markets. Trading gains accounted for approximately 2%, 2%, and 12% of our total net revenues for the years ended December 31, 2018, 2017, and 2016, respectively.

Trading gains also include revenues from net dividends. Market making activities require us to hold a substantial inventory of equity securities. We derive revenues in the form of dividend income from these equity securities. This dividend income is largely offset by dividend expense incurred when we make payments in lieu of

dividends on short positions in securities in our portfolio. Dividend income and expense arise from holding market making positions over dates on which dividends are paid to shareholders of record. When a stock pays a dividend, its market price is generally adjusted downward to reflect the value paid to the shareholders of record, which will not be received by those who purchase the stock on or after the ex-dividend date. Hence, the apparent gains and losses due to these price changes must be taken together with the dividends paid and received, respectively, to accurately reflect the results of our market making activities.

As a result of the way we have integrated our market making and securities lending systems, our trading gains and our net interest income from the market making segment are interchangeable and depend on the mix of market making positions in our portfolio. When implied interest rates in the equity and equity options and futures markets exceed the actual interest rates available to us, our market making systems tend to buy stock and sell it forward, which produces higher trading gains and lower net interest income. When these rates are inverted, our market making systems tend to sell stock and buy it forward, which produces lower trading gains and higher net interest income.

Other Income

A primary component of other income is foreign currency gains and losses from our currency diversification strategy. A discussion of our approach to managing foreign currency exposure is contained in Part II, Item 7A of this Annual Report on Form 10-K entitled “Quantitative and Qualitative Disclosures about Market Risk.”

Other income also consists of mark-to-market gains and losses on our U.S. government securities portfolio; income from market data fees, account activity fees, risk exposure fees, payments for order flow from exchange mandated programs, and other brokerage related fees; and gains and losses on financial instruments at fair value and on other financial instruments that are not held for our market making activities. Other income accounted for approximately 8%, 20%, and 7% of our total net revenues for the years ended December 31, 2018, 2017, and 2016, respectively.

Non-Interest Expenses

Execution, Clearing and Distribution Fees

Execution, clearing and distribution fees include the costs of executing and clearing our electronic brokerage and market making trades, as well as liquidity rebates received from various exchanges and market centers, regulatory fees, market data fees, and payments for order flow. Execution fees are paid primarily to electronic exchanges and market centers on which we trade. Clearing fees are paid to clearing houses and clearing agents. Market data fees are paid to third parties to receive streaming price quotes and related information. Payments for order flow are paid primarily as part of exchange-mandated programs, prior to 2018.

Employee Compensation and Benefits

Employee compensation and benefits include salaries, bonuses and other incentive compensation plans, group insurance, contributions to benefit programs and other related employee costs.

Occupancy, Depreciation and Amortization

Occupancy expenses consist primarily of rental payments on office and data center leases and related occupancy costs, such as utilities. Depreciation and amortization expenses result from the depreciation of fixed assets, such as computing and communications hardware, as well as amortization of leasehold improvements, capitalized in-house software development and acquired intangible assets.

Communications

Communications expenses consist primarily of the cost of voice and data telecommunications lines supporting our business, including connectivity to exchanges and market centers around the world.

General and Administrative

General and administrative expenses consist primarily of advertising; professional services expenses, such as legal and audit work; legal and regulatory matters; and other operating expenses.

Customer Bad Debt

Customer bad debt expenses consist primarily of losses incurred by customers in excess of their assets with us, net of amounts recovered by us.

Income Tax Expense

We pay U.S. federal, state and local income taxes on our taxable income, which is proportional to the percentage we own of IBG LLC. Also, our subsidiaries are subject to income tax in the respective jurisdictions in which they operate.

Noncontrolling Interest

We are the sole managing member of IBG LLC and, as such, operate and control all of the business and affairs of IBG LLC and its subsidiaries and consolidate IBG LLC’s financial results into our financial statements. As of December 31, 2018, we held approximately 18.1% ownership interest in IBG LLC. Holdings holds approximately 81.9% ownership interest in IBG LLC. We reflect Holdings’ ownership as a noncontrolling interest in our consolidated statement of financial condition, consolidated statement of comprehensive income, consolidated statement of changes in equity and consolidated statement of cash flows. Our share of IBG LLC’s net income, excluding Holdings’ noncontrolling interest, for the current year was approximately 17.8%, compared to approximately 17.0% for the prior year.

Certain Trends and Uncertainties

We believe that our current operations may be favorably or unfavorably impacted by the following trends that may affect our financial condition and results of operations:

•Retail broker-dealer participation in the equity markets has fluctuated over the past few years due to investor sentiment, market conditions and a variety of other factors. Retail transaction volumes may not be sustainable and are not predictable.
•Additional consolidation among market centers may adversely affect the value of our SmartRoutingSM software.
•Benchmark interest rates have fluctuated over the past years due to economic conditions. Changes in interest rates may not be predictable.
•Price competition in commissions and other fees among broker-dealers may intensify.
•Scrutiny of equity and options market makers, hedge funds and soft dollar practices by regulatory and legislative authorities has increased. New legislation or modifications to existing regulations and rules could occur in the future.
•Our market making activities will continue to be impacted by the following trends until we complete its wind-down.
•The effects of market structure changes, competition (in particular, from high frequency traders) and market conditions have, during certain periods, exerted downward pressure on bid/offer spreads realized by market makers.
•In an effort to improve the quality of their executions as well as to increase efficiencies, market makers have increased the level of automation within their operations, which may allow them to compete more effectively with us.
•A driver of our market making profits is the relationship between actual and implied volatility in the equities markets. The cost of maintaining our conservative risk profile is based on implied volatility, while our profitability, in part, is based on actual volatility. Hence, our profitability is increased when actual volatility runs above implied volatility and it is decreased when actual volatility falls below implied volatility. Implied volatility tends to lag actual volatility.

See “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10-K for a discussion of other risks that may affect our financial condition and results of operations.

Results of Operations

The tables in the period comparisons below provide summaries of our consolidated results of operations. The period-to-period comparisons below of financial results are not necessarily indicative of future results.

Year Ended December 31,
201820172016
(in millions, except share and per share amounts)
Revenues
Commissions$777$647$612
Interest income1,392908606
Trading gains3940163
Other income15833294
Total revenues2,3661,9271,475
Interest expense46322579
Total net revenues1,9031,7021,396
Non-interest expenses
Execution, clearing and distribution fees269241244
Employee compensation and benefits264249242
Occupancy, depreciation and amortization494751
Communications252830
General and administrative968662
Customer bad debt426
Total non-interest expenses707653635
Income before income taxes1,1961,049761
Income tax expense7125662
Net income1,125793699
Less net income attributable to noncontrolling interests956717615
Net income available for common stockholders$169$76$84
Earnings per share
Basic$2.30$1.09$1.28
Diluted$2.28$1.07$1.25
Weighted average common shares outstanding
Basic73,438,20969,926,93366,013,247
Diluted74,266,37070,904,92167,299,413
Comprehensive income
Net income available for common stockholders$169$76$84
Other comprehensive income
Cumulative translation adjustment, before income taxes(14)11(4)
Income taxes related to items of other comprehensive income(1)——
Other comprehensive income (loss), net of tax(13)11(4)
Comprehensive income available for common stockholders$156$87$80
Comprehensive income attributable to noncontrolling interests
Net income attributable to noncontrolling interests$956$717$615
Other comprehensive income - cumulative translation adjustment(66)54(21)
Comprehensive income attributable to noncontrolling interests$890$771$594

The following table sets forth our consolidated results of operations as a percent of our total net revenues for the indicated periods:

Year Ended December 31,
201820172016
Revenues
Commissions41%38%44%
Interest income73%53%43%
Trading gains2%2%12%
Other income8%20%7%
Total revenues124%113%106%
Interest expense24%13%6%
Total net revenues100%100%100%
Non-interest expenses
Execution, clearing and distribution fees14%14%17%
Employee compensation and benefits14%15%17%
Occupancy, depreciation and amortization3%3%4%
Communications1%2%2%
General and administrative5%5%4%
Customer bad debt0%0%0%
Total non-interest expenses37%38%45%
Income before income taxes63%62%55%
Income tax expense4%15%4%
Net Income59%47%50%
Less net income attributable to noncontrolling interests50%42%44%
Net income available for common stockholders9%4%6%

Year Ended December 31, 2018 (“current year”) compared to the Year Ended December 31, 2017 (“prior year”)

Net Revenues

Total net revenues, for the current year, increased $201 million, or 12%, compared to the prior year, to $1,903 million. The increase in net revenues was primarily due to higher net interest income and commissions, partially offset by lower other income.

Commissions

Commissions, for the current year, increased $130 million, or 20%, compared to the prior year, to $777 million, driven by higher customer trading volumes in options and futures and continued customer account growth. Total customer options and futures contract volumes increased 22% and 25%, respectively, while stock share volume decreased 7%, compared to the prior year. The decline in stock trade volumes was due to lighter trading in low-priced stocks, and an increase in the proportion of trading in higher-priced stocks. As a result of this shift, while the number of shares traded declined, the DARTs and commissions on stocks both rose. Total DARTs for cleared and execution-only customers, for the current year, increased 25% to 862 thousand, compared to 688 thousand for the prior year. DARTs for cleared customers, i.e., customers for whom we execute trades, as well as, clear and carry positions, for the current year, increased 24% to 791 thousand, compared to 639 thousand for the prior year. Average commission per DART for cleared customers, for the current year, decreased 3% to $3.87, compared to $3.97 for the prior year, reflecting smaller average order sizes across most products as higher volatility in the first and fourth quarters of the current year likely led to more caution and smaller trade sizes.

Interest Income and Interest Expense

Net interest income (interest income less interest expense), for the current year, increased $246 million, or 36%, compared to the prior year, to $929 million. The increase in net interest income was driven by higher average customer credit and margin loan balances and higher benchmark interest rates.

Net interest income on customer balances, for the current year, increased $196 million, compared to the prior year, driven by a $2.7 billion increase in average customer credit balances, a portion of which were invested in interest-bearing U.S. government securities, a $6.0 billion increase in average customer margin loans, and an 0.83% increase in the average Federal Funds effective rate to 1.83%, compared to the prior year. As a result of the increases in the Federal Funds effective rate, interest expense on customer credit balances denominated in U.S. dollars increased from the prior year, in part, as we passed along more interest to our customers. The increase in benchmark rates also drove higher interest income earned on the investment of customer segregated cash and on margin lending to customers.

We earn income on securities loaned and borrowed to support customer long and short stock holdings in margin accounts. In addition, our Stock Yield Enhancement Program provides an opportunity for customers with fully-paid stock to allow us to lend it out. We pay customers a rebate on the cash collateral generally equal to 50% of the income we earn from lending the shares. We place cash collateral securing the loans in the customer’s account.

In the current year, average securities borrowed decreased 16%, to $3.3 billion and average securities loaned increased 2%, to $4.0 billion, compared to the prior year. Securities borrowed and loaned balances were both impacted by reduced activity in the market making segment. Net interest earned from securities lending is also affected by the level of demand for securities positions held by our customers and in our market making business. During the current year, net interest earned from securities lending transactions increased $24 million, or 13%, compared to the prior year. The increase in net interest income from securities lending transactions was attributable to the electronic brokerage segment. It should be noted that securities lending transactions entered into to support customer activity may produce interest income (expense) that is offset by interest expense (income) related to customer balances.

The Company measures return on interest-earning assets using net interest margin (“NIM”). NIM is computed by dividing the annualized net interest income by the average interest-earning assets for the period. Interest-earning assets consist of cash and securities segregated for regulatory purposes (including U.S. government securities and securities purchased under agreements to resell), customer margin loans, securities borrowed, other interest-earning assets (solely firm assets) and customer cash balances swept into FDIC insured banks as part of our Insured Bank Deposit Sweep Program. Interest-bearing liabilities consist of customer credit balances and securities loaned.

Yields are generally a reflection of benchmark interest rates in each currency in which the Company and its customers hold cash balances. Because a substantial portion of customer cash and margin loans are denominated in currencies other than the U.S. dollar, changes in U.S. benchmark interest rates do not impact the total amount of segregated cash and securities, customer margin loans and customer credit balances. Furthermore, because interest is paid only on eligible cash credit balances (i.e., balances over $10 thousand or equivalent, in securities accounts with over $100 thousand in equity), changes in benchmark interest rates are not passed through to the total amount of customer credit balances. Finally, the Company’s policies with respect to currencies with negative interest rates impact the yields on segregated cash and customer credit balances as effective interest rates in those currencies fluctuate.

Generally, as benchmark interest rates rise a larger portion of the interest earned on securities lending transactions is reported as net interest income on “Segregated cash and securities, net” instead of “Securities borrowed and loaned, net” because interest earned on cash collateral held in specially designated bank accounts for the benefit of customers, in accordance with the U.S. customer protection rules, increases.

The following table presents net interest income information corresponding to interest-earning assets and interest-bearing liabilities for the three years ended December 31, 2018, 2017 and 2016:

Year Ended December 31,
201820172016
(in millions)
**Average interest-earning assets **
Segregated cash and securities$20,911$23,824$24,134
Customer margin loans29,25323,28916,506
Securities borrowed3,3103,9644,155
Other interest-earning assets4,3622,9302,495
FDIC sweeps11,2591242
$59,095$54,131$47,292
**Average interest-bearing liabilities **
Customer credit balances$48,179$45,515$39,980
Securities loaned3,9823,9172,897
$52,161$49,432$42,877
**Net Interest income **
Segregated cash and securities, net2/3$337$201$132
Customer margin loans4677392217
Securities borrowed and loaned, net5216192160
Customer credit balances, net2/4/5(362)(137)(3)
Other net interest income1/3/6904021
Net interest income$958$688$527
Net interest margin (“NIM”)1.62%1.27%1.11%
Annual Yields
Segregated cash and securities1.61%0.84%0.55%
Customer margin loans2.31%1.68%1.31%
Customer credit balances0.75%0.30%0.01%
(1)Represents the average amount of customer cash swept into FDIC-insured banks as part of our Insured Bank Deposit Sweep Program. This item is not recorded in the Company’s consolidated statements of financial condition. Income derived from program deposits is reported in other net interest income in the table above.
(2)We have reclassified components of net interest income related to currencies with negative interest rates and as such, prior period amounts have been adjusted to conform to the current period presentation. For the twelve months ended December 31, 2017 and 2016, $17 million and $13 million have been reclassified from net interest income on “Segregated cash and securities, net” to “Customer credit balances, net”, respectively.
(3)We have reclassified certain components of net interest income related to investments in U.S. Treasury notes and reverse repurchase agreements and as such, prior period amounts have been adjusted to conform to the current period presentation. For the twelve months ended December 31, 2017 and 2016, $8 million and $4 million have been reclassified from net interest income on “Segregated cash and securities, net” to “Other net interest income, net”, respectively.
(4)Interest income and interest expense on customer margin loans and customer credit balances, respectively, are calculated on daily cash balances within each customer’s account on a net basis, which may result in an offset of balances across multiple account segments (e.g., between securities and commodities segments).
(5)We have reclassified components of net interest income related to interest paid on short sale proceeds and as such, prior period amounts have been adjusted to conform to the current period presentation. For the twelve months ended December 31, 2018, 2017 and 2016, ($76) million, ($31) million and ($4) million have been reclassified from net interest income on “Securities borrowed and loaned, net” to “Customer credit balances, net”, respectively. For the quarters ended March 31, 2018, June 30, 2018, September 30, 2018, and December 31, 2018 the amounts reclassified were ($12) million, ($17) million, ($21) million and ($26) million, respectively.
(6)Includes income from financial instruments which has the same characteristics as interest, but is reported in other income in the Company’s consolidated statements of comprehensive income.

Trading Gains

Trading gains, for the current year, decreased $1 million, or 3%, compared to the prior year, to $39 million, on the remaining market making operations. Reflecting the wind-down of our options market making activities, our market making operations executed 18.7 million trades compared to 31.3 million trades executed in the prior year. In addition, market making options and futures contract volumes decreased 51% and 42%, respectively, while stock share volumes increased 59%, compared to the prior year, mainly due to low-priced stocks traded in Hong Kong.

Included in trading gains are net dividends. Dividend income and expense arise from holding market making positions over dates on which dividends are paid to shareholders of record. When a stock pays a dividend, its market price is generally adjusted downward to reflect the value paid, which will not be received by those who purchase stock on or after the ex-dividend date. Hence, the apparent gains and losses due to these price changes, reflecting the value of dividends paid to shareholders, must be taken together with the dividends paid and received, respectively, to accurately reflect the results of our market making activities.

Other Income

Other income, for the current year, decreased $174 million, or 52%, compared to the prior year, to $158 million. Other income from core items increased $30 million, or 27%, compared to the prior year, to $141 million, mainly driven by a $9 million increase in FDIC sweep fee income and increases in market data fee income, order flow income from exchange mandated programs, account activity fee income and risk exposure fee income. Other income from non-core items decreased $204 million, or 92%, to $17 million, mainly driven by a $129 million decrease in gains from our currency diversification strategy (a loss of $19 million for the current year, compared to a gain of $110 million in the prior year); the non-recurrence of a $93 million gain from the remeasurement of our Tax Receivable Agreement liability, payable to Holdings, as a result of the Tax Act; and the non-recurrence of an $11 million gain recognized on the transfer of our U.S. market making business in the prior year; partially offset by a $9 million net mark-to-market gain on our U.S. government securities portfolio in the current year, compared to a $12 million net mark-to-market loss in the prior year. A discussion of our approach to managing foreign currency exposure is contained in Part II, Item 7A of this Annual Report on Form 10-K entitled “Quantitative and Qualitative Disclosures about Market Risk.”

Non-Interest Expenses

Non-interest expenses, for the current year, increased $54 million, or 8%, compared to the prior year, to $707 million, mainly due to a $28 million increase in execution, clearing and distribution fees; a $15 million increase in employee compensation and benefits; a $10 million increase in general and administrative expenses; a $2 million increase in occupancy expenses; and a $2 million increase in customer bad debt; partially offset by a $3 million decrease in communications expense, compared to the prior year. As a percentage of total net revenues, non-interest expenses were 37% for the current year and 38% for the prior year.

Execution, Clearing and Distribution Fees

Execution, clearing and distribution fees, for the current year, increased $28 million, or 12%, compared to the prior year, to $269 million, driven by higher electronic brokerage segment trade volumes, where customer options and futures contract volumes increased 22% and 25%, respectively, compared to the prior year. This was partially offset by the wind-down of our market making operations, which resulted in substantially lower options and futures contract volumes.

Employee Compensation and Benefits

Employee compensation and benefits expenses, for the current year, increased $15 million, or 6%, compared to the prior year, to $264 million, associated with a 9% increase in the average number of employees to 1,317, for the current year, compared to 1,213 for the prior year. Within the operating business segments, we continued to add staff in customer service, legal and compliance, and software development to support electronic brokerage and to reduce staff in market making. As we continue to grow, our focus on automation has allowed us to maintain a relatively small staff. As a percentage of total net revenues, employee compensation and benefits expenses were 14% for the current year and 15% for the prior year.

Occupancy, Depreciation and Amortization

Occupancy, depreciation and amortization expenses, for the current year, increased $2 million, or 4%, compared to the prior year, to $49 million, mainly due to higher office rent and related expenses as we expand our physical space for both offices and data centers. As a percentage of total net revenues, occupancy, depreciation and amortization expenses were 3% for both the current year and the prior year.

Communications

Communications expenses, for the current year, decreased $3 million, or 11%, compared to the prior year, to $25 million, due to lower costs of data lines to exchanges during the current year as we wound down our market making activities. As a percentage of total net revenues, communications expenses were 1% for the current year and 2% for the prior year.

General and Administrative

General and administrative expenses, for the current year, increased $10 million, or 12%, compared to the prior year, to $96 million, mainly due to higher professional services fees and expenses related to legal and regulatory matters, partially offset by the non-recurrence of $21 million in one-time exit costs related to the wind-down of our options market making business recognized in the prior year. As a percentage of total net revenues, general and administrative expenses were 5% for both the current year and the prior year.

Customer Bad Debt

Customer bad debt expense, for the current year, increased $2 million, or 100%, compared to the prior year, to $4 million.

Income Tax Expense

Income tax expense, for the current year, decreased $185 million, or 72%, to $71 million, compared to the prior year, primarily due to the effects of the Tax Act, recognized in the prior year, partially offset by a one-time income tax expense of $4 million related to the remeasurement of certain deferred tax assets due to the tax reclassification of a foreign subsidiary. See Note 11 to the audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

The Tax Act significantly revised U.S. corporate income tax law by, among other things, reducing the corporate income tax rate from 35% to 21% and implementing a modified territorial tax system that includes a one-time transition tax on deemed repatriated earnings of foreign subsidiaries. As a result of the Tax Act, the prior year results include a net reduction of approximately $84 million related to the following: (1) the one-time transition tax on deemed repatriation of earnings on some of our foreign subsidiaries resulted in an additional income tax expense of $62 million, to be paid over an eight-year period, (2) the remeasurement of deferred tax assets and liabilities at the reduced corporate income tax rate of 21% resulted in additional income tax expense of $115 million, and (3) in connection with the remeasurement of our deferred tax asset arising from the acquisition of interests in IBG LLC, we also remeasured the related Tax Receivable Agreement liability, payable to Holdings, resulting in the recognition of a $93 million gain, which is reported in other income in the consolidated statements of comprehensive income. See Note 9 to the audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

The following table presents information about our income tax expense for the three years ended December 31, 2018, 2017 and 2016.

Year Ended December 31,
201820172016
(in millions, except %)
**Consolidated **
Consolidated income before income taxes$1,196$1,049$761
IBG, Inc. stand-alone income before income taxes292(1)(1)
Gains (losses) on the Company’s common stock held by Operating Companies——(1)
Operating Companies income before income taxes$1,194$957$761
**Operating Companies **
Income before income taxes$1,194$957$761
Income tax expense323130
Income tax expense - effect of the Tax Act—62—
Net income available to members$1,162$864$731
**IBG, Inc. **
Average ownership percentage in IBG LLC17.8%17.0%16.2%
Net income available to IBG, Inc. from Operating Companies$206$147$117
IBG, Inc. stand-alone income before income taxes292(1)(1)
Income before income taxes208239116
Income tax expense394832
Income tax expense - effect of the Tax Act—115—
Net income available to common stockholders$169$76$84
**Consolidated income tax expense **
Income tax expense attributable to Operating Companies$32$93$30
Income tax expense attributable IBG, Inc.3916332
Consolidated income tax expense$71$256$62
**Consolidated effects of the Tax Act **
One-time repatriation tax expense$—$62$—
Remeasurement of U.S. deferred tax assets—115—
Remeasurement of liability under the Tax Receivable Agreement—(93)—
Total decrease in earnings resulting from the Tax Act$—$84$—
(1)Includes a $93 million gain from the remeasurement of the Tax Receivable Agreement liability as a result of the Tax Act, included in other income.

Operating Results

Income before income taxes, for the current year, increased $147 million, or 14%, to $1,196 million, compared to the prior year. Pretax profit margin was 63% for the current year and 62% for the prior year.

Comparing our operating results for the current year to the prior year, excluding the effects of our currency diversification strategy, the net mark-to-market gains and losses from our U.S. government securities portfolio, the one-time net costs related to the wind-down of our options market making activities, and the remeasurement gain on our Tax Receivable Agreement liability due to the Tax Act: net revenues were $1,913 million, up 28%; non-interest expenses were $707 million, up 13%; income before income taxes was $1,206 million, up 38%; and pre-tax profit margin increased to 63% for the current year from 58% for the prior year.

Year Ended December 31, 2017 compared to the Year Ended December 31, 2016

Net Revenues

Total net revenues, for 2017, increased $306 million, or 22%, compared to 2016, to $1,702 million. The increase in net revenues was primarily due to higher net interest income, other income and commissions, partially offset by lower trading gains. Trading volume is an important driver of revenues and costs for both our electronic brokerage and market making segments. During 2017, our electronic brokerage options contract and stock share volumes increased 11% and 50% (largely driven by low-priced U.S. and Hong Kong shares), respectively, while futures contract volume decreased 8%, compared to 2016. Market making trading volumes were significantly down as we began to wind down our market making activities globally during 2017.

Commissions

Commissions, for 2017, increased $35 million, or 6%, compared to 2016, to $647 million, driven by higher customer trading volumes in options and stocks, continued customer account growth and higher average commission per customer order. Cleared customer options contract and stock share volumes increased 11% and 51%, respectively, while futures contract volume decreased 9%, compared to 2016. Total DARTs for cleared and execution-only customers, for 2017, increased 4% to 688 thousand, compared to 660 thousand for 2016. DARTs for cleared customers, i.e., customers for whom we execute trades, as well as, clear and carry positions, for 2017, increased 5% to 639 thousand, compared to 609 thousand for 2016. Average commission per DART for cleared customers, for 2017, increased by 1% to $3.97, compared to $3.92 for 2016, reflecting larger average order sizes in stocks.

Interest Income and Interest Expense

Net interest income (interest income less interest expense), for 2017, increased $156 million, or 30%, compared to 2016, to $683 million. The increase in net interest income was driven by higher average customer credit and margin loan balances and higher benchmark interest rates.

Net interest income on customer balances, for 2017, increased $137 million, compared to 2016, driven by a $5.5 billion increase in average customer credit balances, a portion of which were invested in interest-bearing U.S. government securities, a $6.8 billion increase in average customer margin loans, and a 61 basis point increase in the average Federal Funds effective rate to 1.00%, compared to 2016. As a result of the increases in the Federal Funds effective rate since December 2016, interest expense on customer credit balances increased from 2016, in part, as certain customer credit balances that were not eligible to earn interest in 2016 became eligible to earn interest in 2017. The increase in benchmark rates also drove higher interest income earned on the investment of customer segregated cash and on margin lending to customers.

We earn income on securities loaned and borrowed to support customer long and short stock holdings in margin accounts. In addition, our Stock Yield Enhancement Program provides an opportunity for customers with fully-paid stock to allow us to lend it out. We pay customers a rebate on the cash collateral generally equal to 50% of the income we earn from lending the shares. We place cash collateral securing the loans in the customer’s account.

In 2017, average securities borrowed decreased 5%, to $4.0 billion and average securities loaned increased 35%, to $3.9 billion, compared to 2016. Net interest earned from securities lending is also affected by the level of demand for securities positions held by our customers and in our market making business. During 2017, net fees earned by our electronic brokerage and market making segments from securities lending transactions increased $5 million, or 3%, compared to 2016. The increase in net interest income from securities lending transactions was attributable to the electronic brokerage segment. It should be noted that securities lending transactions entered into to support customer activity may produce interest income (expense) that is offset by interest expense (income) related to customer balances.

Trading Gains

Trading gains, for 2017, decreased $123 million, or 75%, compared to 2016, to $40 million. Reflecting the wind-down of our options market making activities during 2017, our market making operations executed 31.3 million trades compared to 64.0 million trades executed in 2016. In addition, market making options and futures contract and stock share volumes decreased 67%, 60%, and 45%, respectively, compared to 2016.

Trading gains were also unfavorably impacted by decreases in volatility and in the actual-to-implied volatility ratio as compared to 2016. Through our announcement on March 8, 2017, the market making segment had incurred net losses and the segment was not expected to return to meaningful profitability; however, the rate of continuing losses was substantially reduced after we began curtailing these activities.

The VIX®, which measures perceived U.S. equity market volatility, decreased 30% to an average of 11.1 for 2017, compared to an average of 15.9 for 2016. The ratio of actual to implied volatility decreased to an average of 60% for 2017, compared to an average of 83% for 2016. Both of these were negative trends for market making performance, but had less of an impact in 2017 than in 2016 as we curtailed our market making activities.

Included in trading gains are net dividends. Dividend income and expense arise from holding market making positions over dates on which dividends are paid to shareholders of record. When a stock pays a dividend, its market price is generally adjusted downward to reflect the value paid, which will not be received by those who purchase stock on or after the ex-dividend date. Hence, the apparent gains and losses due to these price changes, reflecting the value of dividends paid to shareholders, must be taken together with the dividends paid and received, respectively, to accurately reflect the results of our market making activities.

Other Income

Other income, for 2017, increased $238 million, or 253%, compared to 2016, to $332 million, mainly driven by a gain of $110 million from our currency diversification strategy for 2017, compared to a loss of $40 million for 2016, a gain of $93 million from the remeasurement of our Tax Receivable Agreement liability, payable to Holdings, as a result of the Tax Act, and a $13 million recovery of costs related to the wind-down of our U.S. options market making operations, partially offset by a $12 million net mark-to-market loss on our U.S. government securities portfolio in 2017, compared to $26 million net mark-to-market gain in 2016. Despite an increase in average medium term interest rates during 2017, the net mark-to-market loss on our U.S. government securities portfolio was only $12 million, reflecting a reduction in the size and average duration of the portfolio. In general, mark-to-market gains and losses on U.S. government securities are expected to reverse when, as intended, these securities are held to maturity. A discussion of our approach to managing foreign currency exposure is contained in Part II, Item 7A of this Annual Report on Form 10-K entitled “Quantitative and Qualitative Disclosures about Market Risk.

Non-Interest Expenses

Non-interest expenses, for 2017, increased $18 million, or 3%, compared to 2016, to $653 million, mainly due to a $24 million increase in general and administrative expenses and a $7 million increase in employee compensation and benefits, partially offset by a $4 million decrease in occupancy expenses and a $4 million decrease in customer bad debt, compared to 2016. As a percentage of total net revenues, non-interest expenses were 38% for 2017 and 45% for 2016.

Execution, Clearing and Distribution Fees

Execution, clearing and distribution fees, for 2017, decreased $3 million, or 1%, compared to 2016, to $241 million, driven by lower trading volume in our market making segment as we began to wind down our market making activities globally. Market making options and futures contract and stock share volumes decreased 67%, 60% and 45%, respectively, from 2016. This was largely offset by higher execution and clearing expenses in our electronic brokerage segment, where customer options contract and stock share volumes increased 11% and 50%, respectively. In addition, the electronic brokerage segment received lower liquidity rebates from exchanges operating a make-or-take pricing model, in which we are paid for adding liquidity and charged for removing liquidity, as trading volume shifted away from orders that added liquidity to orders that removed liquidity in 2017 compared to 2016.

Employee Compensation and Benefits

Employee compensation and benefits expenses, for 2017, increased $7 million, or 3%, compared to 2016, to $249 million, mainly due to one-time exit costs related to the wind-down of our options market making activities and a 5% increase in the average number of employees to 1,213, for 2017, compared to 1,154 for 2016. Within the operating business segments, we continued to add staff in customer service, legal and compliance, and software development to support electronic brokerage and reduce staff in market making. As we continue to grow, our focus on automation has allowed us to maintain a relatively small staff. As a percentage of total net revenues, employee compensation and benefits expenses were 15% for 2017 and 17% for 2016.

Occupancy, Depreciation and Amortization

Occupancy, depreciation and amortization expenses, for 2017, decreased $4 million, or 8%, compared to 2016, to $47 million, mainly due to lower office rent expenses and equipment related costs. As a percentage of total net revenues, occupancy, depreciation and amortization expenses were 3% for 2017 and 4% for 2016.

Communications

Communications expenses, for 2017, decreased $2 million, or 7%, compared to 2016, to $28 million, mainly due to lower costs of data lines to exchanges during 2017 as we wound down our market making activities. As a percentage of total net revenues, communications expenses were 2% for both 2017 and 2016.

General and Administrative

General and administrative expenses, for 2017, increased $24 million, or 39%, compared to 2016, to $86 million, mainly due to a $21 million write-down of the value of exchange trading rights related to the wind-down of our U.S. options market making operations and higher advertising expenditures. As a percentage of total net revenues, general and administrative expenses were 5% for 2017 and 4% for 2016.

Customer Bad Debt

Customer bad debt expense, for 2017, decreased $4 million, or 67%, compared to 2016, to $2 million.

Income Tax Expense

Income tax expense, for 2017, increased $194 million, or 313%, to $256 million, compared to 2016, primarily due to the effects of the Tax Act, which was enacted on December 22, 2017. The Tax Act significantly revised U.S. corporate income tax law by, among other things, reducing the corporate income tax rate from 35% to 21% and implementing a modified territorial tax system that includes a one-time transition tax on deemed repatriated earnings of foreign subsidiaries.

As a result of the Tax Act, the 2017 results include a net reduction of approximately $84 million related to the following: (1) the one-time transition tax on deemed repatriation of earnings on some of our foreign subsidiaries resulted in an additional income tax expense of $62 million, to be paid over an eight-year period, (2) the remeasurement of deferred tax assets and liabilities at the reduced corporate income tax rate of 21% resulted in additional income tax expense of $115 million, and (3) in connection with the remeasurement of our deferred tax asset arising from the acquisition of interests in IBG LLC, we also remeasured the related Tax Receivable Agreement liability, payable to Holdings, resulting in the recognition of a $93 million gain, which is reported in other income in the consolidated statements of comprehensive income.

Operating Results

Income before income taxes, for 2017, increased $288 million, or 38%, to $1,049 million, compared to 2016. Pretax profit margin was 62% for 2017 and 55% for 2016.

Our operating results, for 2017, excluding the effects of our currency diversification strategy, the net mark-to-market gains and losses from our U.S. government securities portfolio, the one-time net costs related to the wind-down of our options market making activities, and the remeasurement gain on our Tax Receivable Agreement liability due to the Tax Act, compared to 2016, were as follows: net revenues were $1,500 million, up 6%; non-interest expenses were $628 million, down 1%; income before income taxes was $872 million, up 13%; and pre-tax profit margin increased to 58% for 2017, from 55% for 2016.

Trading Volumes and Brokerage Statistics

The following tables present historical trading volumes and brokerage statistics for our business. However, volumes are not the only drivers in our business.

TRADE VOLUMES: _(in 000’s, except %)_

Period**Market ****Making **Trades**% **Change**Brokerage ****Cleared **Trades**% **Change**Brokerage ****Non ****Cleared **Trades**% **Change**Total **Trades**% **Change**Avg. Trades ****per U.S. **Trading Day
201464,530206,75918,055289,3441,155
201565,9372%242,84617%18,7694%327,55313%1,305
201664,038(3%)259,9327%16,515(12%)340,4854%1,354
201731,282(51%)265,5012%14,835(10%)311,618(8%)1,246
201818,663(40%)328,09924%21,88047%368,64218%1,478

CONTRACT AND SHARE VOLUMES: _(in 000’s, except %)_

TOTAL

Period**Options **(contracts)**% **ChangeFutures**(1)** (contracts)**% **Change**Stocks **(shares)**% **Change
2014631,265123,048153,613,174
2015634,3880%140,66814%172,742,52012%
2016572,834(10%)143,2872%155,439,227(10%)
2017395,885(31%)124,123(13%)220,247,92142%
2018408,4063%151,76222%210,257,186(5%)

MARKET MAKING

Period**Options **(contracts)**% **ChangeFutures**(1)** (contracts)**% **Change**Stocks **(shares)**% **Change
2014344,74115,66812,025,822
2015335,406(3%)14,975(4%)15,376,07628%
2016307,377(8%)14,205(5%)13,082,887(15%)
2017102,025(67%)5,696(60%)7,139,622(45%)
201849,554(51%)3,277(42%)11,347,81159%

BROKERAGE TOTAL

Period**Options **(contracts)**% **ChangeFutures**(1)** (contracts)**% **Change**Stocks **(shares)**% **Change
2014286,524107,380141,587,352
2015298,9824%125,69317%157,366,44411%
2016265,457(11%)129,0823%142,356,340(10%)
2017293,86011%118,427(8%)213,108,29950%
2018358,85222%148,48525%198,909,375(7%)
(1)Futures contract volume includes options on futures.

BROKERAGE CLEARED

Period**Options **(contracts)**% **ChangeFutures**(1)** (contracts)**% **Change**Stocks **(shares)**% **Change
2014225,662106,074137,153,132
2015244,3568%124,20617%153,443,98812%
2016227,413(7%)128,0213%138,523,932(10%)
2017253,30411%116,858(9%)209,435,66251%
2018313,79524%146,80626%194,012,882(7%)
(1)Futures contract volume includes options on futures.

BROKERAGE STATISTICS: _(in 000’s, except % and where noted)_

4Q20184Q2017**% **Change
**Year over Year **
Total Accounts59848324%
Customer Equity (in billions)(1)$128.4$124.83%
Cleared DARTs85668126%
Total Customer DARTs95173030%
**Cleared Customers (in $’s, except DART per account) **
Commission per DART$3.79$3.92(3%)
DART per Avg. Account (Annualized)3643630%
Net Revenue per Avg. Account (Annualized)$3,225$3,318(3%)
(1)Excludes non-customers.

Business Segments

The following sections discuss the results of our operations by business segment, excluding a discussion of corporate segment income and expense. In the following tables, revenues and expenses directly associated with each business segment are included in determining income before income taxes. Due to the integrated nature of the business segments, estimates and judgments have been made in allocating certain revenue and expense items. Transactions between business segments generally result from one subsidiary facilitating the business of another subsidiary through the use of its existing trading memberships and clearing arrangements. In such cases, certain revenue and expense items are eliminated to accurately reflect the external business conducted in each business segment. Rates on transactions between business segments are designed to approximate full costs. In addition to execution, clearing and distribution fees, which are the main cost driver for both the market making and the electronic brokerage segments, each business segment’s operating expenses include: (i) employee compensation and benefits expenses that are incurred directly in support of each business segment, (ii) general and administrative expenses, which include directly incurred expenses for property leases, professional fees, travel and entertainment, communications and information services, equipment, and (iii) indirect support costs (including compensation and other related operating expenses) for administrative services provided by corporate segment subsidiaries. Such administrative services include, but are not limited to, computer software development and support, accounting, tax, legal and facilities management.

Electronic Brokerage

The following table sets forth the results of our electronic brokerage operations for the indicated periods:

Year Ended December 31,
201820172016
(in millions)
Revenues
Commissions$777$648$613
Interest income1,386829537
Other income169108128
Total revenues2,3321,5851,278
Interest expense49018039
Total net revenues1,8421,4051,239
Non-interest expenses
Execution, clearing and distribution fees254210181
Employee compensation and benefits131122113
Occupancy, depreciation and amortization171821
Communications161514
General and administrative243178148
Customer bad debt426
Total non-interest expenses665545483
Income before income taxes$1,177$860$756

Year Ended December 31, 2018 (“current year”) compared to the Year Ended December 31, 2017 (“prior year”)

Electronic brokerage total net revenues, for the current year, increased $437 million, or 31%, compared to the prior year, to $1,842 million, due to higher net interest income, commissions and other income.

Commissions, for the current year, increased $129 million, or 20%, compared to the prior year, to $777 million, driven by higher customer trading volumes in options and futures and continued customer account growth. Total customer options and futures contract volumes increased 22% and 25%, respectively, while stock share volume decreased 7%, compared to the prior year. The decline in stock trade volumes was due to lighter trading in low-priced stocks, and an increase in the proportion of trading in higher-priced stocks. As a result of this shift, while the number of shares traded declined, the DARTs and commissions on stocks both rose. Total DARTs for cleared and execution-only customers, for the current year, increased 25% to 862 thousand, compared to 688 thousand for the prior year. DARTs for cleared customers, i.e., customers for whom we execute trades, as well as, clear and carry positions, for the current year, increased 24% to 791 thousand, compared to 639 thousand for the prior year. Average commission per DART for cleared customers, for the current year, decreased 3% to $3.87, compared to $3.97 for the prior year, reflecting smaller average order sizes across most products as higher volatility in the first and fourth quarters of the current year likely led to more caution and smaller trade sizes.

Net interest income, for the current year, increased $247 million, or 38%, compared to the prior year, to $896 million driven by a $2.7 billion increase in average customer credit balances, a portion of which were invested in interest-bearing U.S. government securities, a $6.0 billion increase in average customer margin loans, and an 0.83% increase in the average Federal Funds effective rate to 1.83%, compared to the prior year. As a result of the increases in the Federal Funds effective rate, interest expense on customer credit balances denominated in U.S. dollars increased from the prior year, in part, as we passed along more interest to our customers. The increase in benchmark rates also drove higher interest income earned on the investment of customer segregated cash and on margin lending to customers.

Other income, for the current year, increased $61 million, or 56%, compared to the prior year, to $169 million, mainly driven by a $9 million net mark-to-market gain on our U.S. government securities portfolio in the current year compared to a $12 million net mark-to-market loss in the prior year, a $13 million increase in net gains from other investments, a $9 million increase in FDIC sweep fee income, a $7 million increase in market data fee income, a $6 million increase in order flow income, and a $3 million increase in account activity fee income, compared to the prior year.

Non-interest expenses, for the current year, increased $120 million, or 22%, compared to the prior year, to $665 million. Within non-interest expenses, execution, clearing and distribution fees increased $44 million, or 21%, driven by higher customer trading volumes in options and futures, which increased 22% and 25%, respectively, compared to the prior year. A 16% increase in the average number of employees providing services to the electronic brokerage segment led to increased employee compensation and benefits expenses of $9 million, or 7%, and increased general and administrative expenses of $65 million, both of which, in part, reflect a redeployment of staff from market making to electronic brokerage activities, which accounted for $30 million of this increase. In addition, general and administrative expenses for the current year include higher professional services fees and expenses related to legal and regulatory matters, compared to the prior year. As a percentage of total net revenues, non-interest expenses were 36% for the current year and 39% for the prior year.

Income before income taxes, for the current year, increased $317 million, or 37%, compared to the prior year, to $1,177 million. As a percentage of total net revenues for the electronic brokerage segment, income before income taxes was 64% for the current year and 61% for the prior year.

Comparing electronic brokerage operating results for the current year to the prior year: excluding the net mark-to-market gains and losses from our U.S. government securities portfolio, net revenues were $1,833 million, up 29%; income before income taxes was $1,168 million, up 34%; and pre-tax profit margin increased to 64% for the current year from 62% for the prior year.

Year Ended December 31, 2017 compared to the Year Ended December 31, 2016

Electronic brokerage total net revenues, for 2017, increased $166 million, or 13%, compared to 2016, to $1,405 million, primarily due to higher net interest income and commissions, partially offset by lower other income.

Commissions, for 2017, increased $35 million, or 6%, compared to 2016, to $648 million, driven by higher customer trading volumes in options and stocks, continued customer account growth, and higher average commission per customer order. Cleared customer options contract and stock share volumes increased 11% and 51%, respectively, while futures contract volume decreased 9%, compared to 2016. Total DARTs for cleared and execution-only customers, for 2017, increased 4% to 688 thousand, compared to 660 thousand for 2016. DARTs for cleared customers, i.e., customers for whom we execute trades, as well as, clear and carry positions, for 2017, increased 5% to 639 thousand, compared to 609 thousand for 2016. Average commission per DART for cleared customers, for 2017, increased 1% to $3.97, compared to $3.92 for 2016, reflecting larger average order sizes in stocks.

Net interest income, for 2017, increased $151 million, or 30%, compared to 2016, to $649 million driven by a $5.5 billion increase in average customer credit balances, a portion of which were invested in interest-bearing U.S. government securities, a $6.8 billion increase in average customer margin loans, and a 61 basis point increase in the average Federal Funds effective rate to 1.00%. As a result of increases in the Federal Funds effective rate since December 2016, interest expense on customer credit balances increased from 2016, in part, as certain customer credit balances that were not eligible to earn interest in 2016 became eligible to earn interest in 2017. The increase in benchmark rates also drove higher interest income earned on investment of customer segregated cash and on margin lending to customers.

Other income, for 2017, decreased $20 million, or 16%, compared to 2016, to $108 million, mainly driven by a $12 million net mark-to-market loss on our U.S. government securities portfolio in 2017, compared to a $26 million net mark-to-market gain in 2016, partially offset by higher exposure fee and market data fee income. Despite an increase in average medium term interest rates during 2017 the net mark-to-market loss on our U.S. Government securities portfolio was only $12 million, reflecting a reduction in the size and average duration of the portfolio. In general, mark-to-market gains and losses on U.S. government securities are expected to reverse when, as intended, these securities are held to maturity.

Non-interest expenses, for 2017, increased $62 million, or 13%, compared to 2016, to $545 million. Within non-interest expenses, execution, clearing and distribution fees increased $29 million, or 16% driven by higher trading volumes in options and stocks and a reduction in liquidity rebates from exchanges operating a make-or-take pricing model, in which we are paid for adding liquidity and charged for removing liquidity, as the options trading volume shifted away from orders that added liquidity to orders that removed liquidity in 2017. A 10% increase in the number of employees providing services to the electronic brokerage segment led to increased employee compensation and benefits expenses of $9 million, or 8% and increased general and administrative expenses of $30 million, where the latter includes software development provided by the corporate segment on a consulting basis, which accounted for $18 million of this increase. In addition, general and administrative expenses for 2017 include higher advertising expenditures and professional services fees, compared to 2016. As a percentage of total net revenues, non-interest expenses were 39% for both 2017 and 2016.

Income before income taxes, for 2017, increased $104 million, or 14%, compared to 2016, to $860 million. As a percentage of total net revenues for the electronic brokerage segment, income before income taxes was 61% for both 2017 and 2016.

Electronic brokerage operating results, for 2017, excluding the net mark-to-market gains and losses from our U.S. government securities portfolio, compared to 2016 were as follows: net revenues were $1,417 million, up 17%; income before income taxes was $872 million, up 19%; and pre-tax profit margin increased to 62% for 2017 from 60% for 2016.

Market Making

The following table sets forth the results of our market making operations for the indicated periods:

Year Ended December 31,
201820172016
(in millions)
Revenues
Trading gains$39$40$163
Interest income498971
Other income9164
Total revenues97145238
Interest expense215948
Total net revenues7686190
Non-interest expenses
Execution, clearing and distribution fees163263
Employee compensation and benefits102531
Occupancy, depreciation and amortization—34
Communications1710
General and administrative154638
Total non-interest expenses42113146
Income (loss) before income taxes$34$(27)$44

Year Ended December 31, 2018 (“current year”) compared to the Year Ended December 31, 2017 (“prior year”)

As previously described, in early 2017 we started the process of winding down our options market making operations and the market making results described below were mainly impacted by such pull-back.

Market making total net revenues, for the current year, decreased $10 million, or 12%, compared to the prior year, to $76 million, due to lower other income, net interest income and trading gains.

Trading gains, for the current year, decreased $1 million, or 3%, compared to the prior year, to $39 million. Reflecting the wind-down of our options market making activities, our market making operations executed 18.7 million trades compared to 31.3 million trades executed in the prior year. In addition, market making options and futures contract volumes decreased 51% and 42%, respectively, while stock share volumes increased 59%, compared to the prior year, mainly due to low-priced stocks traded in Hong Kong.

Net interest income, for the current year, decreased $2 million, or 7%, compared to the prior year, to $28 million. As described above, our trading gains and our net interest income are interchangeable and depend on the mix of market making positions in our portfolio and on relative interest rates in the stock and options markets.

Other income, for the current year, decreased $7 million, or 44%, compared to the prior year, to $9 million, mainly due to the non-recurrence of an $11 million one-time recovery of costs related to the sale of our U.S. options market making operations to Two Sigma Securities, LLC in the prior year.

Non-interest expenses, for the current year, decreased $71 million, or 63%, compared to the prior year, to $42 million. Within non-interest expenses, execution, clearing and distribution fees decreased $16 million, or 50%, on lower trading volumes in options and futures. Employee compensation and benefits expenses decreased $15 million, or 60%, and general and administrative expenses decreased $31 million, or 67%, primarily due to the non-recurrence of $25 million in one-time exit costs related to the wind-down of our options market making business recognized in the prior year. As a percentage of total net revenues, non-interest expenses were 55% for the current year and 131% for the prior year.

Income before income taxes, for the current year, increased $61 million, compared to the prior year, to $34 million.

Year Ended December 31, 2017 compared to the Year Ended December 31, 2016

As previously described, in early 2017 we started the process of winding down our options market making operations and the market making results described below were mainly impacted by such pull-back.

Market making total net revenues, for 2017, decreased $104 million, or 55%, compared to 2016, to $86 million, primarily due to lower trading gains.

Trading gains, for 2017, decreased $123 million, or 75% compared to 2016, to $40 million, unfavorably impacted by lower trading volumes, as we began to wind down our market making activities in March 2017, and, to a lesser extent, by decreases in volatility and in the actual-to-implied volatility ratio, compared to 2016. The VIX®, which measures perceived U.S. equity market volatility, decreased 30% to an average of 11.1 for 2017, compared to an average of 15.9 for 2016. The ratio of actual to implied volatility decreased to an average of 60% for 2017, compared to an average of 83% for 2016. Options and futures contract and stock share volumes decreased 67%, 60%, and 45%, respectively, compared to 2016.

Net interest income, for 2017, increased $7 million, or 30%, compared to 2016, to $30 million. As described above, our trading gains and our net interest income are interchangeable and depend on the mix of market making positions in our portfolio and on relative interest rates in the stock and options markets.

Other income, for 2017, increased $12 million, compared to 2016, to $16 million due to an $11 million one-time recovery of costs related to the sale of our U.S. options market making operations to Two Sigma Securities, LLC and $2 million in consulting fees related to the reimbursement of costs incurred during the transition of these operations to Two Sigma Securities, LLC.

Non-interest expenses, for 2017, decreased $33 million, or 23%, compared to 2016, to $113 million. Within non-interest expenses, execution, clearing and distribution fees decreased $31 million, or 49%, on lower trading volumes across product types. Employee compensation and benefits expenses decreased $6 million, or 19%, driven by continued reductions in staff. General and administrative expenses increased $8 million, or 21%, due to a $21 million write-down of the value of exchange trading rights related to the wind-down of our U.S. options market making operations, partially offset by lower consulting expenses, primarily for internal software development. As a percentage of total net revenues, non-interest expenses were 131% for 2017 and 77% for 2016.

Income before income taxes, for 2017, decreased $71 million, compared to 2016, to a loss of $27 million.

Liquidity and Capital Resources

We maintain a highly liquid balance sheet. The majority of our assets consist of investments of customer funds, collateralized receivables arising from customer-related and proprietary securities transactions, and exchange-listed marketable securities, which are marked-to-market daily. Collateralized receivables consist primarily of customer margin loans, securities borrowed, and, to a lesser extent, securities purchased under agreements to resell, and receivables from clearing houses for settlement of securities transactions. As of December 31, 2018, total assets were $60.5 billion of which approximately $60.2 billion, or 99.5%, were considered liquid.

Daily monitoring of liquidity needs and available collateral levels is undertaken to help ensure that an appropriate liquidity cushion, in the form of unpledged collateral, is maintained at all times. We actively manage our excess liquidity and we maintain significant borrowing facilities through the securities lending markets and with banks. As a general practice, we maintain sufficient levels of cash on hand to provide us with a buffer should we need immediately available funds for any reason. Based on our current level of operations, we believe our cash flows from operations, available cash and available borrowings will be adequate to meet our future liquidity needs for more than the next twelve months.

Liability balances, as of December 31, 2018, in connection with securities loaned were higher than the average monthly balance during the current year and our payables to customers and short-term borrowings were lower than their respective average monthly balances during the current year.

Cash and cash equivalents held by our non-U.S. operating companies as of December 31, 2018 were $769 million ($590 million as of December 31, 2017). These funds are primarily intended to finance each individual operating company’s local operations, and thus would not be available to fund U.S. domestic operations unless repatriated through payment of dividends to IBG LLC. In 2018 a dividend of $54 million was paid to IBG LLC from one of our non-U.S. subsidiaries. As of December 31, 2018, we had no intention to repatriate further amounts from non-U.S. operating companies. With the enactment of the Tax Act, we recognized a $62 million liability for the one-time transition tax on deemed repatriation of earnings of some of our foreign subsidiaries for the year ended December 31, 2017. As a result, in the event dividends were to be paid to the Company in the future by a non-U.S. operating company, the Company would not be required to accrue and pay income taxes on such dividends, except for foreign taxes in the form of dividend withholding tax, if any, imposed on the recipient of the distribution or dividend distribution tax imposed on the payor of the distribution.

Historically, our consolidated equity has consisted primarily of accumulated retained earnings, which to date have been sufficient to fund our operations and growth. Our consolidated equity increased 11% to $7.2 billion as of December 31, 2018 from $6.4 billion as of December 31, 2017. This increase is attributable to total comprehensive income, partially offset by distributions and dividends paid during 2018.

Cash Flows

The following table sets forth our cash flows from operating activities, investing activities and financing activities for the periods indicated:

Year-Ended December 31,
201820172016
(in millions)
Net cash provided by operating activities$2,356$1,065$635
Net cash used in investing activities(57)(26)(6)
Net cash used in financing activities(399)(374)(189)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash(79)65(25)
Increase in cash, cash equivalents, and restricted cash$1,821$730$415

Our cash flows from operating activities are largely a reflection of the changes in customer credit and margin loan balances in our electronic brokerage business, and of the size and composition of trading positions held by our market making subsidiaries. Our cash flows from investing activities are primarily related to other investments, capitalized internal software development, purchases and sales of memberships at exchanges where we trade, and strategic investments where such investments may enable us to offer better execution alternatives

to our current and prospective customers, or where we can influence exchanges to provide competing products at better prices using sophisticated technology. Our cash flows from financing activities are comprised of short-term borrowings and capital transactions. Short-term borrowings from banks are part of our daily cash management in support of operating activities. Capital transactions consist primarily of quarterly dividends paid to common stockholders and related distributions paid to Holdings.

Year Ended December 31, 2018: Our cash, cash equivalents and restricted cash (i.e., cash and cash equivalents that are subject to withdrawal or usage restrictions) increased by $1,821 million to $10.1 billion for the year ended December 31, 2018. We raised $2,356 million in net cash from operating activities. We used net cash of $456 million in our investing and financing activities, primarily for distributions to noncontrolling interests, dividends paid to our common stockholders and payments made under the Tax Receivable Agreement. Investing activities mainly consisted of purchases of other investments and property, equipment and intangible assets.

Year Ended December 31, 2017: Our cash, cash equivalents and restricted cash increased by $730 million to $8.3 billion for the year ended December 31, 2017. We raised $1,065 million in net cash from operating activities. We used net cash of $400 million in our investing and financing activities, primarily for distributions to noncontrolling interests, dividends paid to our common stockholders and payments made under the Tax Receivable Agreement. Investing activities mainly consisted of purchases of property, equipment and intangible assets.

Year Ended December 31, 2016: Our cash, cash equivalents and restricted cash increased by $415 million to $7.5 billion for the year ended December 31, 2016. We raised $635 million in net cash from operating activities. We used net cash of $195 million in our investing and financing activities, primarily for distributions to noncontrolling interests, dividends paid to our common stockholders and payments made under the Tax Receivable Agreement. Investing activities mainly consisted of purchases and sales of other investments mainly consisted of transactions in marketable securities held for investment purposes and distributions received from investments, and purchase of property equipment and intangible assets.

Regulatory Capital Requirements

Our principal operating companies are subject to separate regulation and capital requirements in the U.S. and other jurisdictions. IB LLC and TH LLC are registered U.S. broker-dealers and their primary regulators include the SEC, the Chicago Board Options Exchange, and FINRA. Additionally, IB LLC is regulated by the CFTC and the Chicago Mercantile Exchange. IB LLC is also a registered U.S. forex dealer member regulated by the NFA. IBKRFS is registered to do business in Switzerland as a securities dealer and is regulated by the Swiss Financial Market Supervisory Authority. Our various other operating companies are similarly regulated. See the notes to the audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K for further information regarding our regulated operating companies.

As of December 31, 2018, aggregate excess regulatory capital for all of the operating companies was $5.8 billion, and all of the operating companies were in compliance with their respective regulatory capital requirements.

**Net Capital/ **Eligible EquityRequirementExcess
(in millions)
IB LLC$4,882$416$4,466
TH LLC159—159
IBKRFS58493491
Other regulated Operating Companies810116694
$6,435$625$5,810

Capital Expenditures

Our capital expenditures are comprised of compensation costs of our software engineering staff for development of software for internal use and expenditures for computer, networking and communications hardware, and leasehold improvements. These expenditure items are reported as property, equipment, and intangible assets.

Capital expenditures for property, equipment, and intangible assets were approximately $36 million, $28 million, and $27 million for the three years ended December 31, 2018, 2017, and 2016, respectively. In the future, we plan to meet capital expenditure needs with cash from operations and cash on hand, as we continue our focus on technology infrastructure initiatives to further enhance our competitive position. In response to changing economic conditions, we believe we have the flexibility to modify our capital expenditures by adjusting them (either upward or downward) to match our actual performance. If we pursue any additional strategic acquisitions, we may incur additional capital expenditures.

Contractual Obligations Summary

Our contractual obligations principally include obligations associated with our outstanding indebtedness and interest payments as of December 31, 2018.

Payments Due by Year
Total2019-20202021-2022Thereafter
(in millions)
Payable to Holdings under Tax Receivable Agreement(1)$171$41$37$93
Operating leases167373298
Transition Tax liability(2)56101036
Total contractual cash obligations$394$88$79$227
(1)As of December 31, 2018, contractual amounts owed under the Tax Receivable Agreement of $171 million have been recorded in payable to affiliate in the consolidated financial statements representing management’s best estimate of the amounts currently expected to be owed under the Tax Receivable Agreement. Through December 31, 2018, approximately $159 million of cumulative cash payments have been made.
(2)The Tax Act implemented a modified territorial tax system that includes a one-time transition tax on deemed repatriated earnings of foreign subsidiaries to be paid over an eight-year period. We believe this tax will not have a material impact on our liquidity.

Seasonality

Our businesses are subject to seasonal fluctuations, reflecting varying numbers of market participants at times during the year, varying numbers of trading days from quarter-to-quarter, and declines in trading activity due to holidays. Typical seasonal trends may be superseded by market or world events, which can have a significant impact on prices and trading volume.

Inflation

Although we cannot accurately anticipate the effects of inflation on our operations, we believe that, for the three most recent years, inflation has not had a material impact on our results of operations and will not likely have a material impact in the foreseeable future.

Investments in U.S. Government Securities

We invest in U.S. government securities for the purpose of satisfying U.S. regulatory requirements. As a broker-dealer, unlike banks, we are required to mark these investments to market even though we intend to hold them to maturity. Sudden increases in interest rates will cause mark-to-market losses on these securities, which are recovered if we hold them to maturity, as currently intended. The impact of changes in interest rates is further described in Part II, Item 7A of this Annual Report on Form 10-K entitled “Quantitative and Qualitative Disclosures about Market Risk.”

Strategic Investments and Acquisitions

We regularly evaluate potential strategic investments and acquisitions. We hold strategic investments in electronic trading exchanges including BOX Options Exchange, LLC and OneChicago LLC. In addition, in June 2018, we consummated a strategic investment in Tiger Brokers, an online stock brokerage established for Chinese retail and institutional clients.

We intend to continue making acquisitions on an opportunistic basis, generally only when the acquisition candidate will, in our opinion, enable us to acquire either technology or customers faster than we could develop them on our own.

As of December 31, 2018, there were no other definitive agreements with respect to any material acquisition.

Certain Information Concerning Off-Balance-Sheet Arrangements

We may be exposed to a risk of loss not reflected in our consolidated financial statements for futures products, which represent our obligations to settle at contracted prices, and which may require us to repurchase or sell in the market at prevailing prices. Accordingly, these transactions result in off-balance sheet risk, as our cost to liquidate such futures contracts may exceed the amounts reported in our consolidated statements of financial condition.

Critical Accounting Policies

Principles of Consolidation, including Noncontrolling Interests

The consolidated financial statements include the accounts of IBG, Inc. and its majority and wholly owned subsidiaries. As sole managing member of IBG LLC, we exert control over the Group’s operations. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) ASC Topic 810, “Consolidation,” we consolidate the Group’s consolidated financial statements and record as noncontrolling interest the interests in the Group that we do not own.

We are the sole managing member of IBG LLC and, as such, operate and control all of the business and affairs of IBG LLC and its subsidiaries and as such, consolidate IBG LLC’s financial results into our financial statements. We hold approximately 18.1% ownership interest in IBG LLC. Holdings holds approximately 81.9% ownership interest in IBG LLC. Our current share of IBG LLC’s net income is approximately 18.1%.

Our policy is to consolidate all other entities in which we own more than 50% unless we do not have control. All inter-company balances and transactions have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts and disclosures in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on judgment and the best available information at the time. Therefore, actual results could differ materially from those estimates. Such estimates include the allowance for doubtful accounts, valuation of certain investments, compensation accruals, current and deferred income taxes, costs associated with exit or disposal activities, and contingency reserves.

Valuation of Financial Assets and Financial Liabilities

Due to the nature of our operations, substantially all of our financial assets, comprised of financial instruments owned, securities purchased under agreements to resell, securities borrowed, receivable from customers, and receivables from brokers, dealers and clearing organizations are carried at fair value based on published market prices and are marked to market daily, or are assets which are short-term in nature and are reported at amounts that approximate fair value. Similarly, all of our financial liabilities that arise from financial instruments sold but not yet purchased, securities sold under agreements to repurchase, securities loaned, payables to customers, and payables to brokers, dealers and clearing organizations are carried at fair value based on published market prices and are marked to market daily, or are liabilities which are short-term in nature and are reported at amounts that approximate fair value. Our long and short positions are mainly valued at the last consolidated trade price at the close of regular trading hours, in their respective markets.

Earnings per Share

Earnings per share (“EPS”) are computed in accordance with FASB ASC Topic 260, “Earnings per Share.” Basic EPS is computed by dividing the net income available for common stockholders by the weighted average number of shares outstanding for that period. Diluted EPS is calculated by dividing the net income available for common stockholders by the diluted weighted average shares outstanding for that period. Diluted EPS includes the determinants of the basic EPS and, in addition, reflects the dilutive effect of shares of common stock estimated to be distributed in the future under our stock-based compensation plans, with no adjustments to net income available for common stockholders for potentially dilutive common shares.

Stock-Based Compensation

We follow FASB ASC Topic 718, “Compensation - Stock Compensation” (“ASC Topic 718”), to account for our stock-based compensation plans. ASC Topic 718 requires all share-based payments to employees to be recognized in the consolidated financial statements using a fair value-based method. Grants, which are denominated in U.S. dollars, are communicated to employees in the year of grant, thereby establishing the fair value of each grant. The fair value of awards granted to employees are generally expensed as follows: 50% in the year of grant in recognition of the plans’ post-employment provisions (as described below) and the remaining 50% over the related vesting period utilizing the “graded vesting” method permitted under ASC Topic 718. In the case of “retirement eligible” employees (those employees older than 59), 100% of awards are expensed when granted.

Awards granted under the stock-based compensation plans are subject to the plans’ post-employment provisions in the event an employee ceases employment with us. The plans provide that employees who discontinue employment with us without cause and continue to meet the terms of the plans’ post-employment provisions will be eligible to earn 50% of previously granted, but not yet earned awards, unless the employee is over the age of 59, in which case the employee would be eligible to receive 100% of previously granted, but not yet earned awards.

Contingencies

Our policy is to estimate and accrue for potential losses that may arise out of litigation and regulatory proceedings, to the extent that such losses are probable and can be estimated, in accordance with FASB ASC Topic 450, “Contingencies.” Significant judgment is required in making these estimates and our final liabilities may ultimately be materially different. Our total liability accrued with respect to litigation and regulatory proceedings is determined on a case-by-case basis and represents an estimate of probable losses based on, among other factors, the progress of each case, our experience with and industry experience with similar cases and the opinions and views of internal and external legal counsel. Given the inherent difficulty of predicting the outcome of our litigation and regulatory matters, particularly in cases or proceedings in which substantial or indeterminate damages or fines are sought, or where cases or proceedings are in the early stages, we cannot estimate losses or ranges of losses for cases or proceedings where there is only a reasonable possibility that a loss may be incurred.

As of December 31, 2018, we, along with certain of our subsidiaries, have been named parties to legal actions, which we and/or such subsidiaries intend to defend vigorously. Although the results of legal actions cannot be predicted with certainty, it is the opinion of management that the resolution of these actions is not expected to have a material adverse effect, if any, on our business or financial condition, but may have a material impact on the results of operations for a given period. As of December 31, 2018 and December 31, 2017, reserves provided for potential losses related to litigation matters were not material.

Income Taxes

We account for income taxes in accordance with FASB ASC Topic 740, “Income Taxes” (“ASC Topic 740”). Our income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits are based on enacted tax laws and reflect management’s best assessment of estimated future taxes to be paid. We are subject to income taxes in both the U.S. and numerous foreign jurisdictions. Determining income tax expense requires significant judgment and estimates.

Deferred income tax assets and liabilities arise from temporary differences between the tax and financial statement recognition of the underlying assets and liabilities. In evaluating our ability to recover our deferred tax

assets within the jurisdictions from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, historical results are adjusted for changes in accounting policies and incorporate assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax-planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates we are using to manage the underlying businesses. In evaluating the objective evidence that historical results provide, three years of cumulative operating income (loss) are considered. Deferred income taxes have not been provided for U.S. tax liabilities or for additional foreign taxes on the unremitted earnings of foreign subsidiaries that have been indefinitely reinvested.

The calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across our global operations. Changes in tax laws and rates could also affect recorded deferred tax assets and liabilities in the future. The enactment of the Tax Act on December 22, 2017 significantly revised the U.S corporate income tax law by, among other things, reducing the corporate income tax rate from 35% to 21% and implementing a modified territorial tax system that includes a one-time transition tax on deemed repatriated earnings of foreign subsidiaries. See Note 11 to the audited consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K. We record tax liabilities in accordance with ASC Topic 740 and adjust these liabilities when management’s judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in payments that are different from the current estimates of these tax liabilities. These differences will be reflected as increases or decreases to income tax expense in the period in which new information becomes available.

We recognize that a tax benefit from an uncertain tax position may be recognized only when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. A tax position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement.

We recognize interest related to income tax matters as interest income or interest expense and penalties related to income tax matters as income tax expense.

Recently Issued Accounting Pronouncements

Following is a summary of recently issued FASB Accounting Standards Updates (“ASUs”) that have affected or may affect our consolidated financial statements:

AffectsStatus
ASU 2016-02Leases (Topic 842): Requires the recognition of a right-of-use asset and a lease liability for leases previously classified as operating lease in the statements of financial condition.Effective for fiscal years beginning after December 15, 2018.
ASU 2016-13Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.Effective for fiscal years beginning after December 15, 2019.
ASU 2017-04Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.Effective for fiscal years beginning after December 15, 2019.
ASU 2017-08Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Amending the amortization period for certain purchased callable debt securities held at a premium.Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.
AffectsStatus
ASU 2017-11Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging (Topic 815): Changing the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features.Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.
ASU 2017-12Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.
ASU 2018-02Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.Effective for fiscal years and first interim periods beginning after December 15, 2018.
ASU 2018-03Technical Correction and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.Effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years beginning after June 15, 2018.
ASU 2018-07Compensation – Stock Compensation (Topic _718):_Improvements to Nonemployee Share-Based Payment Accounting.Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.
ASU 2018-10Leases (Topic 842): Codification Improvements.Effective for fiscal years beginning after December 15, 2018, including interim periods within those annual periods.
ASU 2018-11Leases (Topic 842): Targeted Improvements.Effective for fiscal years beginning after December 15, 2018, including interim periods within those annual periods.
ASU 2018-13Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement.Effective for fiscal years beginning after December 15, 2019, including interim periods within those annual periods.
ASU 2018-15Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.Effective for fiscal years beginning after December 15, 2019, including interim periods within those annual periods.
ASU 2018-19Financial Instruments – Credit Losses (Topic 326): Codification Improvements.Effective for fiscal years beginning after December 15, 2019, including interim periods within those annual periods.

Adoption of the ASUs that became effective during 2018 and 2019 prior to the issuance of the Company’s consolidated financial statements, had no material effect on these financial statements, except as described in the notes to these financial statements.

ASU 2016-02, “Leases (Topic 842)” is effective January 1, 2019 and will be implemented by applying a prospective approach with a cumulative-effect adjustment in the opening balance of retained earnings in the period of adoption as per ASU 2018-11, “Leases (Topic 842) – Targeted Improvements”. ASU 2016-02 requires that a lessee recognize in the statement of financial condition a right-of-use asset and corresponding lease liability, including for those leases that the Company currently classifies as operating leases. The right-of-use asset and the lease liability will initially be measured using the present value of the remaining lease payments. The Company’s implementation efforts include reviewing the terms of existing leases and service contracts, which may include embedded leases. Upon adoption, the Company expects to record right-of-use assets and lease liabilities on its statements of financial condition of approximately $136 million.

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