Semi-Annual Review of OMX Copenhagen 20 Index

Stockholm, December 2, 2009 - The NASDAQ OMX Group, Inc. (NASDAQ:NDAQ) announced today the result of the semi-annual review of the OMX Copenhagen 20 Index (NASDAQ OMX Copenhagen: OMXC20), which will become effective with the market open on Monday, December 21, 2009. As a result of the re-ranking NASDAQ OMX will add Jyske Bank A/S to the OMXC20 Index and remove Coloplast B. NASDAQ OMX has also reviewed the OMX Copenhagen 20 index rules. Effective from this review, the constituents of the index will be free float adjusted. This means that only the part of the share capital that is considered available for trading is included in the index. The objective of introducing free float adjustment is to avoid a distortion in the price of a security and to improve the index' overall investability. Free float adjustment is today a commonly used standard among major index providers. The OMX Copenhagen 20 Index constituents effective 21 December, 2009 are: -------------------------------------------------------------------------------- | A.P. Møller - Mærsk A | | Lundbeck | -------------------------------------------------------------------------------- | A.P. Møller - Mærsk B | | NKT Holding | -------------------------------------------------------------------------------- | Carlsberg A/S B | | | Nordea Bank AB | -------------------------------------------------------------------------------- | D/S Norden | | | Novo Nordisk B | -------------------------------------------------------------------------------- | Danisco | | | | Novozymes B | -------------------------------------------------------------------------------- | Danske Bank | | | Sydbank | -------------------------------------------------------------------------------- | DSV | | | | Topdanmark | -------------------------------------------------------------------------------- | FLSmidth & Co. | | | TrygVesta | -------------------------------------------------------------------------------- | Genmab | | | | Vestas Wind Systems | -------------------------------------------------------------------------------- | Jyske Bank A/S | | | William Demant Holding | -------------------------------------------------------------------------------- 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

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