Stockholm, December 7, 2009 - 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 21, 2009. NASDAQ OMX announced that Sevan Marine (SEVAN) will be added to the OMXO20 index. No share will be removed since the OMXO20 index temporarily consists of only 19 shares due to the removal of Tandberg (TAA), effective December 8, 2009 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 21, 2009 are: Acergy Aker Solutions DnB NOR DNO International Fred. Olsen Energy Frontline Golden Ocean Group Marine Harvest Norsk Hydro Orkla Petroleum Geo-Services Renewable Energy Corporation Royal Caribbean Cruises Seadrill Sevan Marine Statoil Storebrand Subsea 7 Telenor 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 is dedicated to designing powerful indexes that are in sync with a continually changing market environment. Utilizing the expanded coverage of our global company, NASDAQ OMX has nearly 1,500 diverse equity, commodity and fixed-income indexes in the U.S., Europe, and throughout the world. In addition, our calculation, licensing and marketing support provide the tools to measure and replicate global markets. The NASDAQ OMX Index Group range of services covers the entire business process from index design to calculation and dissemination. For more information about NASDAQ OMX indexes, visit https://indexes.nasdaqomx.com/. 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 over 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. Please follow NASDAQ OMX on Facebook (http://www.facebook.com/pages/NASDAQ-OMX/108167527653) and Twitter (http://www.twitter.com/nasdaqomx). 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. There can be no assurance that the FSA will give the NASDAQ OMX applicant the authorization and permissions which it seeks. - # - Media Contacts: Carl Norell +46 8 405 66 39 carl.norell@nasdaqomx.com