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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1120193	Nasdaq Omx Group Inc.	NDAQ	Security & Commodity Brokers, Dealers, Exchanges & Services (6200)	521165937

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
889232	Ab Investor	Arsenalsgatan 8C, S-103 32 Stockholm V7 00000		No	No	Yes	No
1513454	Ab Holding Patricia	Arsenalsgatan 8C, S-103 32 Stockholm V7 00000		No	No	Yes	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	Acquisiton	2011-08-09	200,000	$21.13	18,804,142	No	4	P	Indirect	See footnote
Common Stock	Acquisiton	2011-08-10	150,000	$21.68	18,954,142	No	4	P	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See footnote
No	4	P	Indirect	See footnote

Footnotes

These shares of common stock of NASDAQ OMX Group, Inc. (the "Issuer"), par value $0.01 per share (the "Common Stock"), are held by Patricia Holding AB. Investor AB is the sole shareholder of Patricia Holding AB.
This price represents the approximate weighted average price per share of Common Stock of purchases that were executed at prices ranging from $20.95 to $21.25 per share. Investor AB and Patricia Holding AB undertake to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares of Common Stock sold at each price.
This price represents the approximate weighted average price per share of Common Stock of purchases that were executed at prices ranging from $21.28 to $22.00 per share. Investor AB and Patricia Holding AB undertake to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares of Common Stock sold at each price.