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Semi-annual review of OMX Oslo 20 Index


Stockholm, December 3, 2010 - The NASDAQ OMX Group, Inc. (NASDAQ:NDAQ) announced today the result of the semi-annual review of the OMX Oslo 20 Index (NASDAQ OMX Stockholm: OMXO20), which will become effective with the market open on Monday, December 20, 2010. NASDAQ OMX announced that TGS-NOPEC Geophysical Company (TGS) will be added to the OMXO20 index. DNO International (DNO) will be removed from the index. The OMXO20 is a free float adjusted index composed of the 20 most traded stocks on Oslo Børs. The OMXO20 Index is designed to track the Norwegian stock market and act as underlying for financial products such as options, futures, exchange- traded funds and mutual funds. OMXO20 is re-ranked semi-annually in June and December. The OMX Oslo 20 Index constituents effective December 20, 2010 are: Acergy Aker Solutions DnB NOR Fred. Olsen Energy Frontline Golden Ocean Group Marine Harvest Norsk Hydro Orkla Petroleum Geo-Services Royal Caribbean Cruises Renewable Energy Corporation Seadrill Sevan Marine Storebrand Statoil Subsea 7 Telenor TGS-NOPEC Geophysical Company Yara International About NASDAQ OMX Index Products NASDAQ OMX is a global leader in creating and licensing strategy indexes and is home to the most widely watched indexes in the world. As a premier, full-service provider, NASDAQ OMX Global Index Group specializes in the development of indexes focusing on NASDAQ OMX's brand themes of innovation, technology, growth, and globalization. NASDAQ OMX Global Index Group also provides custom index services and design solutions as a third-party provider to selected financial organizations. For more information about NASDAQ OMX indexes, visit Access to essential historical index data for NASDAQ OMX indexes can be accessed from a single source, NASDAQ OMX Global Index Watch. For additional information, please visit 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 more than 3,600 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 Please follow NASDAQ OMX on Facebook ( and Twitter ( 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. - # - Media Contacts: Teresa Wincrantz +46 8 405 63 26

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