Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Class A Common Stock

Our Class A common stock is currently listed on NASDAQ under the ticker symbol "CME." As of February 12, 2020, there were approximately 6,310 holders of record of our Class A common stock.

Class B Common Stock

Our Class B common stock is not listed on a national securities exchange or traded in an organized over-the-counter market. Each class of our Class B common stock is associated with a membership in a specific division of our CME exchange. CME's rules provide exchange members with trading rights and the ability to use or lease these trading rights. Each share of our Class B common stock can be transferred only in connection with the transfer of the associated trading rights.

Class B shares and the associated trading rights are bought and sold or leased through our membership department. Although our Class B shareholders have special voting rights, because our Class B shares have the same equitable interest in our earnings and the same dividend payments as our Class A shares, we expect that the market price of our Class B common stock, if reported separately from the associated trading rights, would be primarily determined by the value of our Class A common stock. As of February 12, 2020, there were approximately 1,560 holders of record of our Class B common stock.

PERFORMANCE GRAPH

The graph below compares the cumulative five-year total return provided shareholders on CME Group Inc.'s Class A common stock relative to the cumulative total returns of the S&P 500 index and two customized peer groups of three companies and five companies respectively, whose individual companies are listed in footnotes 1 and 2 below. An investment of $100 (with reinvestment of all dividends) is assumed to have been made in our Class A common stock, in each index and in each of the peer groups on December 31, 2014 and its relative performance is tracked through December 31, 2019.

(1) There are three companies included in the company's 2018 customized peer group which are: Cboe Global Markets Inc, Intercontinental Exchange Inc and Nasdaq Inc.

(2) The five companies included in the company's 2019 customized peer group are: Cboe Global Markets Inc, Deutsche Boerse Ag, Intercontinental Exchange Inc, London Stock Exchange Group Plc and Nasdaq Inc. We complied this revised peer group to more closely reflect our competitors in our industry. We believe the new peer group provides a more meaningful basis for comparison to our stock performance.

The stock price performance included in this graph is not necessarily indicative of future stock price performance.

Unregistered Sales of Equity Securities

None.

Issuer Purchases of Equity Securities