NEW YORK, May 13, 2013 (GLOBE NEWSWIRE) -- The NASDAQ OMX Group, Inc. (Nasdaq:NDAQ) announced today the results of the semi-annual re-ranking of the NASDAQ Biotechnology Index ® (Nasdaq:NBI), which will become effective prior to market open on Monday, May 20, 2013. The following eleven securities will be added to the Index: ACADIA Pharmaceuticals Inc. (Nasdaq:ACAD); Albany Molecular Research, Inc. (Nasdaq:AMRI); Anacor Pharmaceuticals, Inc. (Nasdaq:ANAC); Clovis Oncology, Inc. (Nasdaq:CLVS); Furiex Pharmaceuticals, Inc. (Nasdaq:FURX); Hyperion Therapeutics, Inc. (Nasdaq:HPTX); NewLink Genetics Corporation (Nasdaq:NLNK); Progenics Pharmaceuticals, Inc. (Nasdaq:PGNX); Repligen Corporation (Nasdaq:RGEN); Sucampo Pharmaceuticals, Inc. (Nasdaq:SCMP); and Synergy Pharmaceuticals, Inc. (Nasdaq:SGYP). The Index is designed to track the performance of a set of NASDAQ-listed securities that are classified as either biotechnology or pharmaceutical according to the Industry Classification Benchmark (ICB). The NASDAQ Biotechnology Index is re-ranked semi-annually in May and November. For more information about the NASDAQ Biotechnology Index, including detailed eligibility criteria, visit https://indexes.nasdaqomx.com/ . As a result of the re-ranking, the following four securities will be removed from the Index: Affymax, Inc. (Nasdaq:AFFY); BioCryst Pharmaceuticals, Inc. (Nasdaq:BCRX); Sagent Pharmaceuticals, Inc. (Nasdaq:SGNT); and Savient Pharmaceuticals Inc. (Nasdaq:SVNT). The NASDAQ Biotechnology Index is the basis for the iShares NASDAQ Biotechnology Index(SM) Fund (Nasdaq:IBB), which seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the NASDAQ Biotechnology Index. In addition, options based on the iShares NASDAQ Biotechnology Index Fund trade on various exchanges. 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 23 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 more than $6 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 ( www.facebook.com/NASDAQ) and Twitter ( www.twitter.com/nasdaqomx). (Symbol: NDAQ and member of S&P 500) The ETFs set forth above are not issued, endorsed, sold, or promoted by NASDAQ OMX.