NASDAQ OMX GROUP

Shares of Cubist Pharmaceuticals Inc. (CBST) touched a new 52-week high of $30.02 on Wednesday morning. Optimer Pharmaceuticals Inc. (OPTR) said it has entered an exclusive two-year co-promotion agreement with Cubist to market Dificid in the U.S.

U.S. stocks ended mixed on Tuesday as weaker-than-expected ISM Services PMI report and hawkish Fed meeting minutes weighed on the sentiment.

U.S. stocks slightly declined in early trade on Tuesday as investors await the release of the minutes of the latest Federal Reserve Open Market Committee (FOMC) meeting.

Exchange operator Nasdaq OMX Group will rebalance its benchmark Nasdaq 100 index, cutting the weighting of widely held stocks, such as Apple Inc, and causing volatility as investors adjust their portfolios.

The top pre-market NASDAQ Stock Market gainers are: Cubist Pharmaceuticals, Questcor Pharmaceuticals, Diamond Foods, Expedia, and ON Semiconductor. The top pre-market NASDAQ Stock Market losers are: SemiLEDs, Prospect Capital, Cree, A-Power Energy Generation Systems, Aixtron, and Apple.

Stock index futures pointed to a lower open on Wall Street on Tuesday, with futures for the S&P 500 down 0.3 percent, Dow Jones futures down 0.1 percent and Nasdaq 100 futures down 0.8 percent at 3:52 a.m. EDT.

Stock index futures pointed to a lower open on Wall Street on Tuesday, with futures for the S&P 500 down 0.3 percent, Dow Jones futures down 0.1 percent and Nasdaq 100 futures down 0.8 percent at 3:52 a.m. EDT.

U.S. stocks advanced in early trade on Monday as investors looked to extend a two-week winning streak in the major indexes.

The companies whose shares are actively trading in Friday's morning session include Bank of Ireland, Alexander & Baldwin, NYSE Euronext, SRA International, Logitech International, Office Depot, Ascent Solar and Omeros.

U.S. stocks advanced in early trade on Friday following better-than-expected monthly non-farm payrolls and unemployment data.

The top pre-market NASDAQ Stock Market gainers are: Golar LNG, Star Scientific, Ebix, Sino Clean Energy, and AEterna Zentaris. The top pre-market NASDAQ Stock Market losers are: Omeros, Atrinsic, Logitech International, Ascent Solar Technologies, Xyratex, and Nasdaq OMX Group.

The companies whose shares are moving in pre-market trade on Friday are: NYSE Euronext, Bristol Myers Squibb, Huntington Bancshares, United Parcel Service, NASDAQ OMX Group, IntercontinentalExchange, Jds Uniphase and Visa.

The top U.S. companies that are reporting earnings before the market opens on March 23 are: General Mills, Texas Industries, and Wonder Auto Technology. The top U.S. companies that are reporting earnings after the market close on March 23 are: Paychex, Red Hat, SAIC, Steelcase, HB Fuller, and OMNOVA Solutions.

Shares of Celera Corp. (NASDAQ: CRA) touched a new 52-week high of $8.42 on Friday, as it agreed to be acquired by Quest Diagnostics Inc. (NYSE: DGX) for $8 a share or about $344 million in cash, net of $327 million in acquired cash and short-term investments.

Mergers sweeping financial exchanges are in part an unintended consequence of global financial regulatory reforms, the head of IntercontinentalExchange Inc said on Wednesday .

IntercontinentalExchange Inc CEO Jeffrey Sprecher and Nasdaq OMX Group CEO Robert Greifeld know what it is to try -- and fail -- to take over another exchange.

The top pre-market NASDAQ stock market gainers are: Star Scientific, A-Power Energy Generation, EMCORE, Gulfport Energy and JA Solar Holdings. The top pre-market NASDAQ stock market losers are: USA Technologies, Neutral Tandem, NXP Semiconductors, Fushi Copperweld and Camtek.

Shares of RC2 Corp. (RCRC) touched a new more than 3-year high of $27.59 on Thursday, shortly after the Nikkei business daily first reported that Japan's Tomy Co. Ltd. and RC2 were in merger talks.

Genzyme Corp. (NASDAQ: GENZ) said Monday that its board has unanimously recommended to its shareholders to accept the latest sweetened offer from French drug giant Sanofi-Aventis SA (NYSE: SNY) and to tender their shares into the revised offer. The shares of Genzyme touched a new 52-week high of $76.09 on Wednesday.

Xyratex Ltd.'s (NASDAQ: XRTX) hard disk drive-related business segment Storage Infrastructure is currently under pressure from continued, weak demand and excess supply for 2.5-inch (i.e. notebook) drives, according to RBC Capital Markets.

Robert W. Baird downgraded its rating on shares of TomoTherapy Inc. (NASDAQ: TOMO) to neutral from outperform with a price target of $5.