Stockholm, November 12, 2010 — NASDAQ OMX (NASDAQ: NDAQ) announces that the shares of Etrion Corporation (ticker symbol: ETX), an independent solar power producer, today start trading on the main market of NASDAQ OMX Stockholm. Etrion is a Small Cap company within the Utilities sector, and has been listed on the Toronto Stock Exchange under the ticker symbol ETX since September 2009. Etrion is the twelfth company to list on NASDAQ OMX in Europe in 2010. Etrion develops, builds, owns and operates solar power plants. The Company currently owns 40 megawatts (MW) of operational, ground-based solar photovoltaic (PV) power plants, has 8 MW of solar parks under construction and has more than 200 MW of solar development pipeline in Italy. Etrion plans to expand into other European markets in 2011. For more information about Etrion, visit www.etrion.com Jenny Rosberg, Senior Vice President at NASDAQ OMX, said, “Etrion is active within the exciting renewable energy power generation industry and is a welcome addition to our Utilities sector. As the fifth company cross-listing from Toronto, we are happy to welcome Etrion to NASDAQ OMX and look forward to working with them in reaching new investors as well as increasing their liquidity.” Marco Northland, CEO of Etrion, commented, “Etrion has experienced significant growth in the past year and is today one of the largest solar power producers in Italy. Etrion is also one of the few publicly traded renewable energy companies solely focused on solar power generation. With the secondary listing in Stockholm, we can offer European investors access to the downstream solar sector - a growth industry with attractive returns and strong policy support.” - # - NASDAQ OMX Media contacts: Anna Rasin +46 (8) 405 66 12 firstname.lastname@example.org 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/nasdaqomx) 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.