Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The statements in this report include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on current expectations and beliefs and involve numerous risks and uncertainties that could cause actual results to differ materially from expectations. These forward-looking statements speak only as of the date hereof or as of the dates indicated in the statements and should not be relied upon as predictions of future events, as we cannot assure you that the events or circumstances reflected in these statements will be achieved or will occur. You can identify forward-looking statements by the use of forward-looking terminology including “believes,” “expects,” “may,” “will,” “should,” “seeks,” “intends,” “plans,” “pro forma,” “estimates,” “anticipates,” or the negative of these words and phrases, other variations of these words and phrases or comparable terminology. The forward-looking statements relate to, among other things: possible impact of future accounting rules on AMD’s condensed consolidated financial statements; demand for AMD’s products; the growth, change and competitive landscape of the markets in which AMD participates; international sales will continue to be a significant portion of total sales in the foreseeable future; that AMD’s cash, cash equivalents and short-term investment balances together with the availability under that certain revolving credit facility (the Revolving Credit Agreement) made available to AMD and certain of its subsidiaries and our cash flows from operations will be sufficient to fund AMD’s operations including capital expenditures and purchase commitments over the next 12 months and beyond; AMD’s ability to obtain sufficient external financing on favorable terms, or at all; AMD’s expectation that based on management’s current knowledge, the potential liability related to AMD’s current litigation will not have a material adverse effect on its financial position, results of operation or cash flows; anticipated ongoing and increased costs related to enhancing and implementing information security controls; all unbilled accounts receivables are expected to be billed and collected within 12 months; revenue allocated to remaining performance obligations that are unsatisfied which will be recognized in the next 12 months; and a small number of customers will continue to account for a substantial part of AMD’s revenue in the future. For a discussion of the factors that could cause actual results to differ materially from the forward-looking statements, see “Part II, Item 1A—Risk Factors” and the “Financial Condition” section set forth in “Part I, Item 2-Management’s Discussion and Analysis of Financial Condition and Results of Operations,” or MD&A, and such other risks and uncertainties as set forth below in this report or detailed in our other Securities and Exchange Commission (SEC) reports and filings. We assume no obligation to update forward-looking statements.
References in this Quarterly Report on Form 10-Q to “AMD,” “we,” “us,” “management,” “our” or the “Company” mean Advanced Micro Devices, Inc. and our consolidated subsidiaries.
AMD, the AMD Arrow logo, AMD Instinct, AMD RDNA, EPYC, Radeon, Ryzen, Threadripper, Versal, Xilinx and combinations thereof are trademarks of Advanced Micro Devices, Inc. Microsoft and Xbox are trademarks or registered trademarks of Microsoft Corporation in the United States and other jurisdictions. PlayStation is a registered trademark or trademark of Sony Interactive Entertainment, Inc. Other names are for informational purposes only and are used to identify companies and products and may be trademarks of their respective owners. “Zen” is a code name for an AMD architecture and is not a product name.
The following discussion should be read in conjunction with the unaudited condensed consolidated financial statements and related notes included in this report and our audited consolidated financial statements and related notes as of December 25, 2021 and December 26, 2020, and for each of the three years for the period ended December 25, 2021 as filed in our Annual Report on Form 10-K for the fiscal year ended December 25, 2021.
Overview and Recent Developments
We are a global semiconductor company primarily offering:
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server microprocessors and graphics processing units (GPUs), data processing units (DPUs), Field Programmable Gate Arrays (FPGAs) and adaptive System-on-Chip (SoC) products for data centers;
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microprocessors, accelerated processing units (APUs) that integrate microprocessors and graphics, and chipsets for desktop and notebook personal computers;
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discrete GPUs, semi-custom SoC products and development services; and
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embedded microprocessors and GPUs, FPGAs, adaptive SoC products, and Adaptive Compute Acceleration Platform (ACAP) products.
From time to time, we may also sell or license portions of our intellectual property (IP) portfolio.
In this section, we will describe the general financial condition and the results of operations of Advanced Micro Devices, Inc. and its wholly-owned subsidiaries (collectively, “us,” “our” or “AMD”), including a discussion of our results of operations for the three and nine months ended September 24, 2022 compared to the prior year period and an analysis of changes in our financial condition.
Net revenue for the three months ended September 24, 2022 was $5.6 billion, a 29% increase compared to the prior year period. The increase in net revenue was driven by a 45% increase in Data Center segment revenue primarily due to higher sales of our EPYC™ server processors, a 14% increase in Gaming segment revenue primarily due to higher semi-custom product sales, and a significant increase in Embedded segment revenue from the prior year period driven by the inclusion of Xilinx, Inc. (Xilinx) embedded product sales. These increases were partially offset by a 40% decrease in Client segment revenue primarily due to lower processor shipments driven by a weak PC market and significant inventory correction actions across the PC supply chain.
Gross margin for the three months ended September 24, 2022 was 42% compared to gross margin of 48% for the prior year period. The decrease in gross margin was primarily due to the amortization of acquisition-related intangible assets associated with the Xilinx acquisition. In addition, gross margin was impacted by $160 million of charges for inventory, pricing, and related reserves in the Gaming and Client segments, as we experienced softening gaming graphics and PC demand in the third quarter of 2022 due to weakened macroeconomic conditions.
Operating loss for the three months ended September 24, 2022 was $64 million compared to operating income of $948 million for the prior year period. The decrease in operating income was primarily driven by the amortization of intangible assets associated with the Xilinx acquisition and increased R&D investments.
Net income for the three months ended September 24, 2022 was $66 million compared to net income of $923 million for the prior year period. The decrease in net income was primarily driven by lower operating income.
As of September 24, 2022, our cash, cash equivalents and short-term investments were $5.6 billion, compared to $3.6 billion as of December 25, 2021. The increase in cash, cash equivalents and short-term investments was primarily as a result of the $2.4 billion of cash and $1.6 billion of short-term investments acquired from the Xilinx acquisition. As of September 24, 2022, the principal amount of our outstanding debt obligations was $2.5 billion, which primarily includes $1.5 billion of debt assumed from Xilinx and $1.0 billion of debt issued on June 9, 2022, compared to $313 million of debt as of December 25, 2021. We fully repaid the $312 million in aggregate principal of our 7.50% Senior Notes that matured in August 2022.
During the three months ended September 24, 2022, we repurchased 6.9 million shares of our common stock for $617 million under a stock repurchase program approved by our Board of Directors (Repurchase Program). As of September 24, 2022, $6.8 billion remains available for future stock repurchases under the Repurchase Program. The Repurchase Program does not obligate us to acquire any common stock, has no termination date and may be suspended or discontinued at any time.
We continued to achieve our technology roadmap milestones during the third quarter of 2022, as we launched the AMD Ryzen™ 7000 Series Desktop processors powered by our new “Zen 4” architecture, designed to advance gaming and content creation performance. We also announced the AMD Ryzen 7020 Series processors for mobile applications to bring high-end performance and battery life to everyday users.
During the third quarter of 2022, we experienced limited disruptions due to the COVID-19 pandemic. We continue to monitor our operations and public health measures implemented by governmental authorities in response to the pandemic. We are focused on the health and safety of our employees and are taking safety measures to protect our employees who are in the office and support those employees who work remotely.
We intend the discussion of our financial condition and results of operations that follows to provide information that will assist in understanding our financial statements, the changes in certain key items in those financial statements from period to period, the primary factors that resulted in those changes, and how certain accounting principles, policies and estimates affect our financial statements.
Critical Accounting Policies and Estimates
Our discussion and analysis of our financial condition and results of operations are based upon our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP). The preparation of our financial statements requires us to make estimates and judgments that affect the reported amounts in our consolidated financial statements. We evaluate our estimates on an on-going basis, including those related to our revenue, inventories, goodwill, intangibles and income taxes. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Although actual results have historically been reasonably consistent with management’s expectations, the actual results may differ from these estimates or our estimates may be affected by different assumptions or conditions. As a result of our acquisitions, we believe the following critical accounting estimates, in addition to those disclosed as our critical accounting estimates in the Management’s Discussion and Analysis of Financial Condition and Results of Operations section of our Annual Report on Form 10-K for the fiscal year ended December 25, 2021, are the most significant to the presentation of our financial statements and require the most difficult, subjective and complex judgments.
Except as noted below, management believes there have been no significant changes for the three and nine months ended September 24, 2022 to the items that we disclosed as our critical accounting estimates in the Management’s Discussion and Analysis of Financial Condition and Results of Operations section of our Annual Report on Form 10-K for the fiscal year ended December 25, 2021.
Business Combinations**.** We allocate the fair value of purchase consideration to the tangible assets acquired, liabilities assumed, and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired technology and trade names, based on expected future revenue growth rates and margins, future changes in technology, useful lives, and discount rates.
Management's estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. Allocation of purchase consideration to identifiable assets and liabilities affects our amortization expense, as acquired finite-lived intangible assets are amortized over the useful life, whereas any indefinite lived intangible assets, including goodwill, are not amortized. During the measurement period, which is not to exceed one year from the acquisition date, we may record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.
Impairment of Long-Lived and Intangible Assets**.** Long-lived and intangible assets to be held and used are reviewed for impairment if indicators of potential impairment exist and at least annually for indefinite-lived intangible assets. Impairment indicators are reviewed on a quarterly basis. Assets are grouped and evaluated for impairment at the lowest level of identifiable cash flows.
When indicators of impairment exist and assets are held for use, we estimate future undiscounted cash flows attributable to the related asset groups. In the event such cash flows are not expected to be sufficient to recover the recorded value of the assets, the assets are written down to their estimated fair values based on the expected discounted future cash flows attributable to the asset group or based on appraisals. Factors affecting impairment of assets held for use include the ability of the specific assets to generate separately identifiable positive cash flows.
When assets are removed from operations and held for sale, we estimate impairment losses as the excess of the carrying value of the assets over their fair value. Market conditions are among the factors affecting impairment of assets held for sale. Changes in any of these factors could necessitate impairment recognition in future periods for assets held for use or assets held for sale.
Global Intangible Low-Taxed Income (GILTI). In 2022, we elected to change our method of accounting for the United States GILTI tax from recording the tax impact in the period it is incurred to recognizing deferred taxes for temporary tax basis differences expected to reverse as GILTI tax in future years. The change is considered preferable based on our facts and circumstances as it provides better and more timely information of expected future income tax liabilities arising from temporary tax differences primarily associated with the Xilinx acquisition. As a result of the acquisition, we recorded $27.3 billion of identified intangible assets (refer to Note 5 - Business Combinations), of which $16.9 billion are related to foreign operations which will be amortized to income from operations over the assets’ estimated useful lives, but for which we will not receive a tax deduction under GILTI. Recognition of deferred taxes for the future GILTI impact of this amount is considered preferable as it provides better information about our potential future tax liabilities based on current transactions. This accounting policy change resulted in the recording of $863 million of deferred tax liabilities in connection with the Xilinx acquisition as disclosed in Note 12 - Income Taxes. In addition, for the three and nine months ended September 24, 2022, it resulted in a decrease in the income tax provision with a corresponding increase to net income of $209 million and $346 million and an increase in basic and diluted earnings per share of $0.13 and $0.23 respectively, as compared to the computation under the previous accounting policy. This accounting policy change had no material impact on our historical consolidated financial statements.
Results of Operations
During the second quarter of fiscal year 2022, we changed our reporting segments to align our financial reporting with how we manage our business in strategic end markets. This is consistent with how our CODM assesses our financial performance and allocates resources. As a result, we report our financial performance based on the following four reportable segments: Data Center, Client, Gaming, and Embedded. Additional information on our reportable segments is contained in Note 4—Segment Reporting of the Notes to Condensed Consolidated Financial Statements (Part I, Financial Information of this Form 10-Q). All prior-period segment data have been retrospectively adjusted.
Our operating results tend to vary seasonally. Historically, our net revenue has been generally higher in the second half of the year than in the first half of the year, although market conditions and product transitions could impact this trend.
The following table provides a summary of net revenue and operating income (loss) by segment:
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||
| September 24, 2022 | September 25, 2021 | September 24, 2022 | September 25, 2021 | ||||||||||||||||||||
| (In millions) | |||||||||||||||||||||||
| Net revenue: | |||||||||||||||||||||||
| Data Center | $ | 1,609 | $ | 1,108 | $ | 4,388 | $ | 2,531 | |||||||||||||||
| Client | 1,022 | 1,692 | 5,298 | 5,058 | |||||||||||||||||||
| Gaming | 1,631 | 1,434 | 5,161 | 3,844 | |||||||||||||||||||
| Embedded | 1,303 | 79 | 3,155 | 175 | |||||||||||||||||||
| Total net revenue | $ | 5,565 | $ | 4,313 | $ | 18,002 | $ | 11,608 | |||||||||||||||
| Operating income (loss): | |||||||||||||||||||||||
| Data Center | $ | 505 | $ | 308 | $ | 1,404 | $ | 622 | |||||||||||||||
| Client | (26) | 490 | 1,342 | 1,558 | |||||||||||||||||||
| Gaming | 142 | 231 | 687 | 527 | |||||||||||||||||||
| Embedded | 635 | 23 | 1,553 | 26 | |||||||||||||||||||
| All Other | (1,320) | (104) | (3,573) | (292) | |||||||||||||||||||
| Total operating income (loss) | $ | (64) | $ | 948 | $ | 1,413 | $ | 2,441 |
Data Center
Data Center net revenue of $1.6 billion for the three months ended September 24, 2022 increased by 45%, compared to net revenue of $1.1 billion for the prior year period. Data Center net revenue of $4.4 billion for the nine months ended September 24, 2022 increased by 73%, compared to net revenue of $2.5 billion for the prior year period. The increase in both periods was driven by higher sales of our EPYC server processors.
Data Center operating income was $505 million for the three months ended September 24, 2022, compared to operating income of $308 million for the prior year period. Data Center operating income was $1.4 billion for the nine months ended September 24, 2022, compared to operating income of $622 million for the prior year period. The increase in operating income for both periods was primarily driven by higher revenue, partially offset by higher operating expenses. Operating expenses increased for the reasons outlined under “Expenses” below.
Client
Client net revenue of $1.0 billion for the three months ended September 24, 2022 decreased by 40%, compared to net revenue of $1.7 billion for the prior year period, primarily due to lower Client processor sales driven by a 43% decrease in unit shipments, partially offset by a 5% increase in average selling price compared with the prior year period. The decrease in unit shipments was due to challenging PC market conditions and significant inventory correction across the PC supply chain. The increase in average selling price was primarily driven by a richer mix of Ryzen desktop processor sales.
Client net revenue of $5.3 billion for the nine months ended September 24, 2022 increased by 5%, compared to net revenue of $5.1 billion for the prior year period, primarily due to higher Client processor sales driven by a 28% increase in average selling price, partially offset by an 18% decrease in unit shipments. The decrease in unit shipments was due to challenging PC market conditions and significant inventory correction across the PC supply chain. The increase in average selling price was primarily driven by a richer mix of Ryzen mobile processor sales.
Client operating loss was $26 million for the three months ended September 24, 2022, compared to operating income of $490 million for the prior year period. The decrease in operating income was primarily due to lower revenue.
Client operating income was $1.3 billion for the nine months ended September 24, 2022, compared to operating income of $1.6 billion for the prior year period. The decrease in operating income was primarily driven by higher operating expenses. Operating expenses increased for the reasons outlined under “Expenses” below.
Gaming
Gaming net revenue of $1.6 billion for the three months ended September 24, 2022 increased by 14%, compared to net revenue of $1.4 billion for the prior year period. Gaming net revenue of $5.2 billion for the nine months ended September 24, 2022 increased by 34%, compared to net revenue of $3.8 billion for the prior year period. The increase in net revenue for both periods was driven by higher semi-custom product sales due to higher demand for gaming console SoCs, partially offset by lower gaming graphics sales due to a decrease in unit shipments driven by soft consumer demand given weakened macroeconomic conditions.
Gaming operating income was $142 million for the three months ended September 24, 2022, compared to operating income of $231 million for the prior year period. The decrease in operating income was primarily driven by lower gaming graphics revenue and inventory, pricing and related reserves.
Gaming operating income was $687 million for the nine months ended September 24, 2022, compared to operating income of $527 million for the prior year period. The increase in operating income was primarily driven by higher revenue, partially offset by higher operating expenses. Operating expenses increased for the reasons outlined under “Expenses” below.
Embedded
Embedded net revenue of $1.3 billion for the three months ended September 24, 2022 increased significantly, compared to net revenue of $79 million for the prior year period. Embedded net revenue of $3.2 billion for the nine months ended September 24, 2022 increased significantly, compared to net revenue of $175 million for the prior year period. The significant increase in net revenue for both periods was primarily driven by the inclusion of Xilinx embedded product revenue.
Embedded operating income was $635 million for the three months ended September 24, 2022, compared to operating income of $23 million for the prior year period. Embedded operating income was $1.6 billion for the nine months ended September 24, 2022, compared to operating income of $26 million for the prior year period. The significant increase in operating income for both periods was primarily driven by the inclusion of Xilinx embedded product revenue.
All Other
All Other operating loss of $1.3 billion for the three months ended September 24, 2022 primarily consisted of $1 billion of amortization of acquisition-related intangibles, $275 million of stock-based compensation expense, and $51 million of acquisition-related costs, which primarily include transaction costs, certain compensation charges related to the acquisitions of Xilinx and Pensando, and depreciation related to the acquired fixed assets fair value step-up adjustment, and licensing gain. All Other operating loss of $104 million for the prior year period primarily consisted of $99 million of stock-based compensation expense and $8 million of acquisition-related costs.
All Other operating loss of $3.6 billion for the nine months ended September 24, 2022 primarily consisted of $2.5 billion of amortization of acquisition-related intangibles, $766 million of stock-based compensation expense, and $400 million of acquisition-related costs, which primarily include transaction costs, amortization of Xilinx inventory fair value step-up adjustment, and depreciation related to the Xilinx fixed assets fair value step-up adjustment, certain compensation charges related to the acquisitions of Xilinx and Pensando, and licensing gain. All Other operating loss of $292 million for the prior year period primarily consisted of $267 million of stock-based compensation expense and $33 million of acquisition-related costs.
International Sales
International sales as a percentage of net revenue were 62% and 67% for the three months ended September 24, 2022 and September 25, 2021, respectively. International sales as a percentage of net revenue were 67% and 72% for the nine months ended September 24, 2022 and September 25, 2021, respectively. We expect that international sales will continue to be a significant portion of total sales in the foreseeable future. Substantially all of our sales transactions were denominated in U.S. dollars.
Comparison of Gross Margin, Expenses, Licensing Gain, Interest Expense, Other Income (Expense) and Income Taxes
The following is a summary of certain condensed consolidated statement of operations data for the periods indicated:
| Three Months Ended | Nine Months Ended | ||||||||||||||||||||||||||||||||||
| September 24, 2022 | September 25, 2021 | September 24, 2022 | September 25, 2021 | ||||||||||||||||||||||||||||||||
| (In millions except for percentages) | |||||||||||||||||||||||||||||||||||
| Net revenue | $ | 5,565 | $ | 4,313 | $ | 18,002 | $ | 11,608 | |||||||||||||||||||||||||||
| Cost of sales | 2,799 | 2,227 | 8,797 | 6,105 | |||||||||||||||||||||||||||||||
| Amortization of acquisition-related intangibles | 412 | — | 1,005 | — | |||||||||||||||||||||||||||||||
| Gross profit | 2,354 | 2,086 | 8,200 | 5,503 | |||||||||||||||||||||||||||||||
| Gross margin | 42 | % | 48 | % | 46 | % | 47 | % | |||||||||||||||||||||||||||
| Research and development | 1,279 | 765 | 3,639 | 2,034 | |||||||||||||||||||||||||||||||
| Marketing, general and administrative | 557 | 376 | 1,746 | 1,036 | |||||||||||||||||||||||||||||||
| Amortization of acquisition-related intangibles | 590 | — | 1,499 | — | |||||||||||||||||||||||||||||||
| Licensing gain | (8) | (3) | (97) | (8) | |||||||||||||||||||||||||||||||
| Interest expense | (31) | (7) | (69) | (26) | |||||||||||||||||||||||||||||||
| Other income (expense), net | 22 | 62 | (24) | 51 | |||||||||||||||||||||||||||||||
| Income tax provision (benefit) | (135) | 82 | 32 | 284 | |||||||||||||||||||||||||||||||
| Equity income in investee | 4 | 2 | 11 | 6 | |||||||||||||||||||||||||||||||
Gross Margin
Gross margin was 42% and 48% for the three months ended September 24, 2022 and September 25, 2021, respectively. The decrease in gross margin was primarily due to the amortization of acquisition-related intangible assets associated with the Xilinx acquisition. In addition, gross margin was impacted by $160 million of charges for inventory, pricing, and related reserves to address challenging market conditions in the Gaming and Client segments.
Gross margin was 46% and 47% for the nine months ended September 24, 2022 and September 25, 2021, respectively. The decrease in gross margin was primarily due to an increase in the amortization of acquisition-related intangible assets associated with the Xilinx acquisition, partially offset by an increase in margin driven by higher Embedded and Data Center segment revenue.
Expenses
Research and Development Expenses
Research and development expenses of $1.3 billion for the three months ended September 24, 2022 increased by $514 million, or 67%, compared to $765 million for the prior year period. Research and development expenses of $3.6 billion for the nine months ended September 24, 2022 increased by $1.6 billion, or 79%, compared to $2.0 billion for the prior year period. The increase in both periods was primarily driven by an increase in headcount through acquisitions and organic growth, and product development costs.
Marketing, General and Administrative Expenses
Marketing, general and administrative expenses of $557 million for the three months ended September 24, 2022 increased by $181 million, or 48%, compared to $376 million for the prior year period. Marketing, general and administrative expenses of $1.7 billion for the nine months ended September 24, 2022 increased by $710 million, or 69%, compared to $1.0 billion for the prior year period. The increase in both periods was due to an increase in headcount through acquisitions and organic growth, go-to-market activities, and acquisition-related costs.
Amortization of Acquisition-Related Intangibles
For the three months ended September 24, 2022, cost of sales and operating expense included $412 million and $590 million, respectively, of amortization expense from intangible assets acquired. For the nine months ended September 24, 2022, cost of sales and operating expense included $1.0 billion and $1.5 billion, respectively, of amortization expense from intangible assets acquired.
Licensing Gain
During the three and nine months ended September 24, 2022, we recognized $8 million of licensing gain from royalty income and $97 million of licensing gain from a milestone achievement and royalty income, respectively, both associated with Licensed IP. During the three and nine months ended September 25, 2021, we recognized $3 million and $8 million, respectively of licensing gain from royalty income, both associated with Licensed IP.
Interest Expense
Interest expense for the three months ended September 24, 2022 was $31 million compared to $7 million for the prior year period. Interest expense for the nine months ended September 24, 2022 was $69 million compared to $26 million for the prior year period. The increase for both periods was primarily due to interest expense from the 2.95% Senior Notes due 2024, the 2.375% Senior Notes due 2030 (together, the Assumed Xilinx Notes), the 3.924% Notes and the 4.393% Notes.
Other Income (Expense), Net
Other income (expense), net is primarily comprised of interest income from short-term investments, changes in valuation of equity investments and foreign currency transaction gains and losses.
Other income, net for the three months ended September 24, 2002 was $22 million, primarily due to interest income driven by rising interest rates. Other income, net for the prior year period was $62 million, primarily due to a $60 million gain from an increase in fair value of an equity investment.
Other expense, net for the nine months ended September 24, 2022 was $24 million, primarily due to a $57 million decrease in the fair value of equity investments, partially offset by $33M of interest income driven by rising interest rates. Other income, net for the prior year period was $51 million, primarily due to a $60 million gain from an increase in fair value of an equity investment.
Income Tax Provision (Benefit)
We recorded an income tax benefit of $135 million and a provision of $32 million for the three and nine months ended September 24, 2022, respectively, representing effective tax rates of 195.7% and 2.4%, respectively. We recorded an income tax provision of $82 million and $284 million for the three and nine months ended September 25, 2021, respectively, representing effective tax rates of 8.2% and 11.5%, respectively.
The determination of our income tax expense for the three and nine months ended September 24, 2022 was based on applying our estimated annual effective tax rate to the year-to-date pre-tax book income adjusted for discrete tax items, such as excess tax benefits from stock-based compensation. The tax benefit for the three months ended September 24, 2022 was primarily due to lower year-to-date pre-tax book income. The difference between the U.S. federal statutory tax rate of 21% and our effective tax rate was primarily due to year-to-date income tax benefit from income eligible for the foreign-derived intangible income (FDII) benefit and research tax credits.
The difference between the U.S. federal statutory tax rate of 21% and our effective tax rate for the three and nine months ended September 25, 2021 was primarily due to a tax FDII benefit and research tax credits.
As of September 24, 2022, we continue to maintain valuation allowances for certain federal, state, and foreign tax attributes. The federal valuation allowance maintained is due to limitations under Internal Revenue Code Section 382 or 383, separate return loss year rules, or dual consolidated loss rules. Certain state and foreign valuation allowances maintained are due to lack of sufficient sources of taxable income.
As of the nine months ended September 24, 2022, the liability for uncertain tax positions increased by $798 million primarily due to the utilization of certain tax attributes that may be subject to additional limitation.
As a result of the acquisition of Xilinx, we recorded $4.3 billion of net deferred tax liabilities primarily on the excess of book basis over the tax basis of the acquired intangible assets, including $863 million of GILTI net deferred tax liability. We also recorded $147 million of current tax payable as of the Xilinx Acquisition Date. Additionally, we assumed $204 million of liability for uncertain tax positions and $321 million of long-term liability for transition tax, which is payable over the next three years.
FINANCIAL CONDITION
Liquidity and Capital Resources
As of September 24, 2022, our cash, cash equivalents and short-term investments were $5.6 billion, compared to $3.6 billion as of December 25, 2021. The increase in cash, cash equivalents and short-term investments was primarily driven by the $2.4 billion of cash, $1.6 billion of short-term investments acquired from Xilinx, $1.0 billion from debt issuance, and cash flows from operations, partially offset by stock repurchases and cash paid for the acquisition of Pensando. The percentage of cash, cash equivalents and short-term investments held domestically as of September 24, 2022 and December 25, 2021 were 76% and 91%, respectively.
Our operating, investing and financing activities for the nine months ended September 24, 2022 compared to the prior year period are as described below:
| Nine Months Ended | |||||||||||
| September 24, 2022 | September 25, 2021 | ||||||||||
| (In millions) | |||||||||||
| Net cash provided by (used in): | |||||||||||
| Operating activities | $ | 2,998 | $ | 2,699 | |||||||
| Investing activities | 932 | (686) | |||||||||
| Financing activities | (3,067) | (1,168) | |||||||||
| Net increase in cash and cash equivalents | $ | 863 | $ | 845 |
As of September 24, 2022, our principal debt obligations were $2.5 billion, which primarily included $1.5 billion of the Assumed Xilinx Notes and $1.0 billion of newly issued 3.924% Notes and 4.393% Notes, compared to $313 million as of December 25, 2021. We repaid our $312 million 7.50% Senior Notes that matured in August 2022.
On April 29, 2022, we entered into a revolving credit agreement (Revolving Credit Agreement) with Wells Fargo Bank, N.A. as administrative agent and other banks identified therein as lenders. The Revolving Credit Agreement provides for a five-year unsecured revolving credit facility in the aggregate principal amount of $3.0 billion.
We believe our cash, cash equivalents, short-term investments and cash flows from operations along with our Revolving Credit Agreement will be sufficient to fund operations, including capital expenditures and purchase commitments, over the next 12 months and beyond. We believe we will be able to access the capital markets should we require additional funds. However, we cannot assure that such funds will be available on favorable terms, or at all.
Operating Activities
Our working capital cash inflows and outflows from operations are primarily cash collections from our customers, payments for inventory purchases and payments for employee-related expenditures.
Net cash provided by operating activities was $3.0 billion in the nine months ended September 24, 2022, primarily due to our net income of $1.3 billion, adjusted for non-cash and non-operating charges of $2.7 billion and net cash outflows of $1.0 billion from changes in our operating assets and liabilities. The primary drivers of the changes in operating assets and liabilities included a $1.3 billion increase in accounts receivable driven primarily by higher revenue in the first three quarters of 2022, a $997 million increase in inventory primarily driven by product build in the Client segment, partially offset by a $994 million increase in accrued liabilities and other driven primarily by higher customer-related accruals.
Net cash provided by operating activities was $2.7 billion in the nine months ended September 25, 2021, primarily due to our net income of $2.2 billion, adjusted for non-cash and non-operating charges of $769 million and net cash inflows of $258 million from changes in our operating assets and liabilities. The primary drivers of the changes in operating assets and liabilities included a $504 million increase in inventories driven by an increase in product build in support of customer demand, and a $284 million increase in prepaid expenses and other assets driven primarily by prepayments of long-term supply agreements, partially offset by a $526 million increase in accounts payable due to an increase in inventory purchases.
Investing Activities
Net cash provided by investing activities was $932 million for the nine months ended September 24, 2022 which primarily consisted of $2.4 billion of cash received from Xilinx in the acquisition and $2.9 billion of proceeds from the maturity of short-term investments, partially offset by cash used in the acquisition of Pensando of $1.6 billion, purchases of short-term investments of $2.4 billion and purchases of property and equipment of $326 million.
Net cash used in investing activities was $686 million for the nine months ended September 25, 2021 which primarily consisted of $1.9 billion for purchases of short-term investments and $215 million for purchases of property and equipment, partially offset by $1.4 billion for maturities of short-term investments.
Financing Activities
Net cash used in financing activities was $3.1 billion for the nine months ended September 24, 2022, which primarily consisted of common stock repurchases of $3.5 billion, repurchases for tax withholding on employee equity plans of $371 million and repayment of debt of $312 million, partially offset by proceeds from the issuance of debt of $991 million and a cash inflow of $79 million from issuance of common stock under our employee equity plans.
Net cash used in financing activities was $1.2 billion for the nine months ended September 25, 2021, which primarily consisted of common stock repurchases of $1.0 billion and repurchases for tax withholding on employee equity plans of $219 million, partially offset by a cash inflow of $55 million from issuance of common stock under our employee equity plans.
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