Semi-annual review of the newly launched OMX Helsinki 15 Index

Helsinki, June 8, 2010 - The NASDAQ OMX Group, Inc. ("NASDAQ") (Nasdaq: NDAQ) announced today the results of the semi-annual review of the newly launched OMX Helsinki 15 index (NASDAQ OMX Helsinki: OMXH15), which will become effective with the market open on Monday June 21, 2010. As a result of the review YIT Corporation will replace Elisa Corporation in the OMXH15 index. The OMX Helsinki 15 index was launched on April 12 this year and already acts as an underlying for several financial products. The index consists of the 15 most traded Blue chip shares on NASDAQ OMX Helsinki and provides the investor with an attractive tool for Finnish exposure. The semi-annual review is effective after the third Friday in June and December each year. The OMX Helsinki 15 index constituents after review effective June 21, 2010 are: Fortum Corporation KONE Corporation Metso Corporation Neste Oil Corporation Nokia Corporation Nokian Tyres Plc Nordea Bank AB (publ) FDR Outokumpu Oyj Outotec Oyj Rautaruukki Corporation Sampo Plc A Stora Enso Oyj R UPM-Kymmene Corporation Wärtsilä Corporation YIT Corporation 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 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 http://www.nasdaqomx.com. Please follow NASDAQ OMX on Facebook (http://www.facebook.com/NASDAQ-OMX/) 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: Anu Ilvonen +358 9 6166 7206 anu.ilvonen@nasdaqomx.com NDAQG

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