The top after-market NASDAQ Stock Market gainers are: Double Eagle Petroleum, GT Solar International, Cytori Therapeutics, A-Power Energy Generation Systems and Hercules Offshore. The top after-market NASDAQ Stock Market losers are: AngioDynamics, Identive Group, SIGA Technologies, BroadSoft and Saba Software.

Gainers:

Double Eagle Petroleum Co. (NASDAQ:DBLE) shares climbed 10.59 percent to $8.04 in post market trading session. The company stock plunged more than 9 percent in regular trading session.

GT Solar International, Inc. (NASDAQ:SOLR) shares surged 7.96 percent to $13.16 in aftermarket trading session after the company raised its guidance for the first quarter of 2012. The company now expects first quarter earnings will be about $0.30 per share on revenue of $225 million, up sharply from its previous estimate range of $0.08 to $0.11 per share on revenue of $140 million to $150 million, while analysts’ expect earnings of $0.15 per share on revenue of $160.85 million.

Cytori Therapeutics Inc. (NASDAQ:CYTX) shares gained 4.73 percent to $5.09 in post market trading session.

A-Power Energy Generation Systems, Ltd. (NASDAQ:APWR) shares advanced 4.17 percent to $2.25 in post market trading session. The stock has a 52 week low of $2.06 and 52 week high of $9.50 and has $85.51 million market capitalization.

Hercules Offshore, Inc. (NASDAQ:HERO) shares advanced 3.98 percent to $5.48 in aftermarket trading session. FBR Capital maintains an 'outperform' rating on shares of HERO.

Losers:

AngioDynamics, Inc. (NASDAQ:ANGO) shares plunged 7.41 percent to $13.49 in post market trading session after the company lowered its fourth quarter revenue guidance. AngioDynamics now expects fourth quarter revenue to be approximately $56.4 million compared to prior revenue guidance of $57.5-$60.5 million.

Identive Group, Inc. (NASDAQ:INVE) shares declined 4.82 percent to $2.37 in aftermarket trading session.

SIGA Technologies Inc. (NASDAQ:SIGA) shares declined 4.55 percent to $11.55 in aftermarket trading session on news that Congress plans to investigate the company's recent receipt of a government contract worth up to $2.8 billion.

BroadSoft, Inc. (NASDAQ:BSFT) shares declined 2.79 percent to $35.60 in post market trading session after the company announced its intention to offer $100 million principal amount of convertible senior notes due 2018 in a private offering.

Saba Software, Inc. (NASDAQ:SABA) shares declined 2.46 percent to $8.33 in aftermarket trading session.