The top after-market NASDAQ Stock Market gainers Friday were: Web.com Group, TASER International, SORL Auto Parts, Globecomm Systems, Bank of the Ozarks, Research In Motion, and Google. The top after-market NASDAQ Stock Market losers were: Sonus Networks, Vitesse Semiconductor, ZAGG, Xenoport, and Rediff.com India.

Gainers

Web.com Group, Inc. (WWWW) stock gained 5.41 percent to $12.07 in after-market trading.

TASER International Inc. (TASR) stock increased 5.08 percent to $5.38 in after-market trading.

SORL Auto Parts, Inc. (SORL) stock gained 4.78 percent to $2.4623 in after-market trading.

Globecomm Systems Inc. (GCOM) stock increased 4.24 percent to $14.26 in after-market trading.

Bank of the Ozarks, Inc. (OZRK) stock rose 3.54 percent to $30.68 in after-market trading.

Research In Motion Ltd. (RIMM) stock moved up 0.21 percent to $14.53 in after-market trading.

Google Inc. (GOOG) stock moved up 0.18 percent to $647.07 in after-market trading. Brokerage firm Robert W. Baird believes that Google finished 2011 on a strong note, with healthy Search and e-commerce trends likely driving upside to consensus estimates.

Losers

Sonus Networks, Inc. (SONS) stock fell 8.33 percent to $2.20 in after-market trading.

Vitesse Semiconductor Corp. (VTSS) stock tumbled 7.63 percent to $2.30 in after-market trading.

ZAGG Inc. (ZAGG) stock slid 5.94 percent to $6.65 in after-market trading.

Xenoport, Inc. (XNPT) stock declined 5.51 percent to $3.60 in after-market trading.

Rediff.com India Ltd. (REDF) stock decreased 5.38 percent to $7.21 in after-market trading.