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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1156375	Cme Group Inc.	CME	Security & Commodity Brokers, Dealers, Exchanges & Services (6200)	364459170

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1212852	R William Shepard	20 S. Wacker Dr Chicago IL 60606		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock Class B2	Acquisiton	2009-02-27	1	$182.40	5	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Direct

Footnotes

Represents the closing price for our Class A common stock on February 27, 2009. The Class B common stock of CME Group Inc. is not listed on a national securities exchange or traded in an organized over-the-counter market. Each class of the Class B common stock is associated with a membership in a specific division of the exchange. We assume that because the Class B shares have the same equitable interst in our earnings and the same dividend payments as our Class A shares, that if reported separately from the associated trading rights, they would have the same market price as our Class A common stock.In connection with the annual review of Mr. Shepard's holdings, it was discovered that his purchase of an IMM membership on the Chicago Mercantile Exchange and the associated share of Class B-2 common stock on February 27, 2009 was not timely reported.