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The top after-market Nasdaq gainers Friday were Zynga Inc, Clean Energy Fuels Corporation, EDAP TMS S.A., Caesars Entertainment Corporation and Cypress Semiconductor Corporation, while the top after-market Nasdaq losers were Amicus Therapeutics Inc, LKQ Corporation, SciClone Pharmaceuticals Inc, and Meru Networks.

The top after-market NASDAQ gainers Thursday were Exide Technologies, Ubiquiti Networks Inc, Microchip Technology Inc, and Kforce, while the top after-market NASDAQ losers were Nuance Communications Inc, Coinstar Inc, Riverbed Technology Inc, and SunPower Corporation.

Online Resources Corporation, JDS Uniphase Corp, Ericsson, and Nokia Corporation are among Thursday's pre-market movers.

The top after-market NASDAQ gainers Tuesday were Amazon.com Inc, Fortinet Inc, Gevo Inc and PAREXEL International Corporation. The top after-market NASDAQ losers Tuesday were Gentex Corporation, Websense Inc, Steel Dynamics Inc, ARIAD Pharmaceuticals Inc and Broadcom Corporation.

The top after-market NASDAQ gainers Wednesday were Netflix Inc, F5 Networks Inc, Dorman Products Inc and Lexicon Pharmaceuticals Inc. The top after-market NASDAQ losers Wednesday were Mellanox Technologies Ltd, Apple Inc, Cirrus Logic Inc, Skyworks Solutions Inc and Altera Corporation.

Initial public offerings could raise as much as $34 billion in U.S. markets and more than $100 billion worldwide, experts said.

A judge set Jan. 23 for a pretrial conference on the class-action lawsuit against Facebook.

Exchange operator Intercontinental Exchange (NYSE:ICE) said Thursday it was looking to buy the parent company of the New York Stock Exchange for $8.2 billion.

The top after-market NYSE gainers Wednesday were NYSE Euronext, Sandridge Energy, Jabil Circuit, Western Asset Mortgage and Annie's Inc. The top after-market losers were Accenture Plc, Health Management Associates, Freescale Semiconductor, Emergent Biosolutions and Genco Shipping & Trading Ltd.

Shares of GPS specialist Garmin Ltd. (NASDAQ:GRMN) rose 6 percent Thursday ahead of the company's inclusion in the Standard & Poor's 500 Index.

Facebook (NASDAQ:FB), the No. 1 social networking website, got a boost when its shares were added to the Nasdaq 100 Index.

Here are 20 technology questions to ponder before this muddle-through year expires.

11 federal judges will hear arguments about where dozens of lawsuits against Facebook (Nasdaq: FB) should be tried.

The good news for investors in Facebook (Nasdaq: FB), the No. 1 social networking site, is that the shares didn’t set a new, post-initial public offering low on Wednesday. But they have come close, trading as low as $18.96 before recovering to $19.40, up 24 cents in late trading.

Any trial in U.S. District Court of the more than 50 shareholder lawsuits alleging fraud by Facebook (Nasdaq: FB), the No. 1 social networking site, and its underwriters could be as much as five months away, lawyers said.

Friday marks 13 weeks since the first public trading in shares of Facebook at $42. Now it's near $21.

Since its May 17 pricing at $38 a share, the stunning collapse in the value of Facebook (Nasdaq: FB) the No. 1 social networking site has made history ? for its sheer size and magnitude.The IPO market remains weak.

Chief Executive Robert Greifeld told a conference of directors at Stanford University's Law School that the exchange had tested its computer systems before the May 18 IPO, but failed to take into account the volume of canceled orders in the run-up to the stock debut, The Wall Street Journal reported.

More than a month after the initial public offering of Facebook (Nasdaq: FB), the No. 1 social networking site, investors ought to be on the alert for several bullish signs.

On May 18, Facebook closed its first day as a public company at $38.23, valuing itself around $105 billion. On Tuesday at mid-day, it traded near $31.50. Still, despite the vilification of the IPO, the slumping share price and dozens of class action lawsuits filed in federal courts in New York and California, Facebook, a damaged brand, has followed the advice of New York image guru Clive Chajet who said it should ignore the press and stick to its knitting.

Shares of Facebook (Nasdaq: FB), the No. 1 social networking site, fell nearly 2 percent on Thursday, exactly three weeks after the company took in $16 billion in its initial public offering.