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Talvivaara Mining Company Plc to Join the OMX Helsinki 25 Index Beginning August 1, 2011


Helsinki, July 13, 2011 — The NASDAQ OMX Group, Inc. (NASDAQ:NDAQ) announced today the result of the semi-annual review of the OMX Helsinki 25 Index (NASDAQ OMX Helsinki: OMXH25). Talvivaara Mining Company Plc (TLV1V) will become a component of the OMXH25 Index prior to market open on Monday, August 1, 2011. Talvivaara Mining Company Plc will replace Tieto Oyj (TIE1V).

Talvivaara Mining is headquartered in Espoo, Finland, and has a market capitalization of approximately EUR 1.1 billion and was listed on NASDAQ OMX Helsinki in 2009. For more information about the company, go to

The OMX Helsinki 25 Index, launched in 1988, is the leading equity index for the Finnish equity market including the 25 most traded Blue chip companies on NASDAQ OMX Helsinki. The index is designed to track the Finnish equity market and act as underlying for financial products such as options, futures, exchange-traded funds and mutual funds.

The OMX Helsinki 25 index constituents effective August 1, 2011 are:

Cargotec Oyj Neste Oil Corporation Rautaruukki Corporation
Elisa Corporation Nokia Corporation Sampo Plc A
Fortum Corporation Nokian Tyres Plc Sanoma Corporation
Kemira Oyj Nordea Bank AB FDR Stora Enso Oyj R
Kesko Corporation B Orion Corporation B Talvivaara Mining Company Plc
KONE Corporation Outokumpu Oyj TeliaSonera AB
Konecranes Plc Outotec Oyj UPM-Kymmene Corporation
Metso Corporation Pohjola Bank A Wärtsilä Oy
   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


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 approximately 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

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.

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Maarit Bystedt

+358 9 6166 7274

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