Methodology Change To The PHLX Semiconductor Sector Index

NEW YORK, Sept. 5, 2013 (GLOBE NEWSWIRE) -- The NASDAQ OMX Group, Inc. (Nasdaq:NDAQ) today announced a change to the methodology of the PHLX Semiconductor Sector Index (Nasdaq:SOX).

The PHLX Semiconductor Sector Index is designed to track the performance of a set of companies engaged in the design, distribution, manufacture, and sale of semiconductors.

In an effort to ensure that the largest market capitalization eligible securities are included in the Index, NASDAQ OMX will begin conducting an Annual Evaluation. The Index will be evaluated annually in September using market data as of the end of July. The top 30 eligible securities based on market capitalization will be included in the Index. Security additions and deletions will be made effective after the close of trading on the third Friday in September.

The first Annual Evaluation will occur along with the regular September Quarterly Rebalance of the Index. The security additions and deletions will become effective prior to market open on Monday, September 23, 2013. A list of the security additions and deletions will be announced after 8PM ET on Friday, September 13, 2013.

About NASDAQ OMX Global Indexes

NASDAQ OMX Global Indexes has been creating innovative, market-leading, transparent indexes since 1971. Today, our index offering spans geographies and asset classes and includes diverse families such as the Dividend Achievers, Global, Nordic, Green Economy, Sharia and Commodity Indexes. We continuously offer new opportunities for financial product sponsors across a wide-spectrum of investable products and for asset managers to measure risk and performance. NASDAQ OMX Global Indexes also provides custom index services and design solutions to selected financial organizations. For more information about NASDAQ OMX Global Indexes, visit indexes.nasdaqomx.com.

Daily index values, weightings and historical data for NASDAQ OMX indexes are available via NASDAQ OMX Global Index Watch and NASDAQ OMX Global Index Data Service.

About NASDAQ OMX Group

The inventor of the electronic exchange, The NASDAQ OMX Group, Inc., fuels economies and provides transformative technologies for the entire lifecycle of a trade - from risk management to trade to surveillance to clearing. In the U.S. and Europe, we own and operate 26 markets, 3 clearinghouses and 5 central securities depositories supporting equities, options, fixed income, derivatives, commodities, futures and structured products. Able to process more than 1 million messages per second at sub-40 microsecond speeds with 99.99% uptime, our technology drives more than 70 marketplaces in 50 developed and emerging countries into the future, powering 1 in 10 of the world's securities transactions. Our award-winning data products and worldwide indexes are the benchmarks in the financial industry. Home to over 3,300 listed companies worth $6.9 trillion in market cap whose innovations shape our world, we give the ideas of tomorrow access to capital today. Welcome to where the world takes a big leap forward, daily. Welcome to the NASDAQ OMX Century. To learn more, visit www.nasdaqomx.com. Follow us on Facebook ( http://www.facebook.com/NASDAQ ) and Twitter ( http://www.twitter.com/nasdaqomx ).

(Symbol: NDAQ and member of S&P 500)

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