NASDAQ OMX Welcomes EnQuest to the Main Market

Stockholm, April 6, 2010 - NASDAQ OMX (NASDAQ:NDAQ) announces that trading in EnQuest Plc. (ENQ) shares commence today on NASDAQ OMX Stockholm. EnQuest, a mid cap company within the Energy sector, will have its secondary listing on NASDAQ OMX Stockholm, with its primary listing on The London Stock Exchange. EnQuest is an independent oil and gas production and development company with a geographic focus on the United Kingdom Continental Shelf (“UKCS”). EnQuest PLC has been formed from the demerged North Sea interests of Lundin Petroleum and Petrofac. For more information visit: www.enquest.com . Jenny Rosberg, Senior Vice President at NASDAQ OMX said, “We are pleased to welcome EnQuest to our main market where it will make a compelling addition in our energy sector. We look forward to supporting EnQuest with the increased investor visibility that comes with a listing at one of Europe's most liquid cash equities markets.” Conditional dealings in EnQuest shares listed on NASDAQ OMX Stockholm commence today April 6. Unconditional dealings in the Ordinary Shares on NASDAQ OMX Stockholm are expected to commence on April 9 2010, the date of Stockholm Admission. About NASDAQ OMX The NASDAQ OMX Group, Inc. is the world's largest exchange company. It delivers trading, exchange technology and public company services across six continents, with approximately 3,700 listed companies. NASDAQ OMX offers multiple capital raising solutions to companies around the globe, including its U.S. listings market, NASDAQ OMX Nordic, NASDAQ OMX Baltic, NASDAQ OMX First North, and the U.S. 144A sector. The company offers trading across multiple asset classes including equities, derivatives, debt, commodities, structured products and exchange-traded funds. NASDAQ OMX technology supports the operations of over 70 exchanges, clearing organizations and central securities depositories in more than 50 countries. NASDAQ OMX Nordic and NASDAQ OMX Baltic are not legal entities but describe the common offering from NASDAQ OMX exchanges in Helsinki, Copenhagen, Stockholm, Iceland, Tallinn, Riga, and Vilnius. For more information about NASDAQ OMX, visit http://www.nasdaqomx.com. Cautionary Note Regarding Forward-Looking Statements The matters described herein contain forward-looking statements that are made under the Safe Harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements include, but are not limited to, statements about NASDAQ OMX's products and offerings. We caution that these statements are not guarantees of future performance. Actual results may differ materially from those expressed or implied in the forward-looking statements. Forward-looking statements involve a number of risks, uncertainties or other factors beyond NASDAQ OMX's control. These factors include, but are not limited to factors detailed in NASDAQ OMX's annual report on Form 10-K, and periodic reports filed with the U.S. Securities and Exchange Commission. We undertake no obligation to release any revisions to any forward-looking statements. CONTACT: NASDAQ OMX Group, Inc. Carl Norell +46 8 405 66 39 carl.norell@nasdaqomx.com

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