The top after-market NYSE gainers on Thursday are: International Game Technology, Noah Education Holdings, Precision Drilling, General Steel Holdings, Amdocs, Plantronics, Standard Pacific, Ship Finance International, Georgia Gulf Corp and Tenet Healthcare Corp.

International Game Technology (NYSE:IGT) shares climbed 9.31 percent to $17.85 in aftermarket trading session as its second quarter profit rose more than 10 percent. Net profit rose to $69.6 million or $0.23 per share compared to $0.7 million in the same quarter last year. The company also raised its earnings outlook for fiscal 2011.

Noah Education Holdings Ltd. (NYSE:NED) shares gained 5.71 percent to $2.59 in post market trading session. The company stock plunged more than 6 percent in regular trading session.

Precision Drilling Corp. (NYSE:PDS) shares advanced 3.49 percent to $16 in post market trading session. The company stock was downgraded to “hold” rating from “buy” rating at TD Newcrest
General Steel Holdings, Inc. (NYSE:GSI) shares advanced 2.83 percent to $2.18 in aftermarket trading session.

Amdocs Ltd. (NYSE:DOX) shares gained 2.8 percent to $31.20 in post market trading session. The stock has a 52 week low of $25.64 and 52 week high of $32.44 and has $5.86 billion market capitalization.

Plantronics, Inc. (NYSE:PLT) shares advanced 2.78 percent to $35.50 in aftermarket trading session.

Standard Pacific Corp. (NYSE:SPF) shares gained 2.12 percent to $3.85 in after market trading session. The company stock plunged 4.31 percent in regular trading session.

Ship Finance International Ltd. (NYSE:SFL) shares advanced 2.06 percent to $20.35 in post market trading session. The company sells the 20-year old combination carrier ‘Front Leader’ to an unrelated third party. As a result of the sale, the company is expected to record a book gain of around $2 million in second quarter of 2011.

Georgia Gulf Corp. (NYSE:GGC) shares advanced 2.04 percent to $40.56 in aftermarket trading session.

Tenet Healthcare Corp. (NYSE:THC) shares gained 1.92 percent to $6.90 in after market trading session. The stock has a 52 week low of $3.92 and 52 week high of $7.70 and has $3.29 billion market capitalization.

Nyse New york city NYSE Euronext