The top after-market NYSE gainers on Thursday are: Alliant Techsystems, Goodyear Tire & Rubber, Tyson Foods, Vonage Holdings and China Yuchai International. The top after-market NYSE losers on Thursday are: DHT Holdings, Teekay Tankers, RealD, Las Vegas Sands and Netsuite.

Gainers

Alliant Techsystems Inc. (NYSE:ATK) shares gained 5.81 percent to $73.78 in aftermarket trading session. The company reported lower third quarter profit but above the analysts’ estimation. Its third quarter profit declined to $70.2 million or $2.09 per share from $78.4 million or $2.33 per share in the same period a year-ago, while analysts expected net income of $1.98 per share.

Goodyear Tire & Rubber Co. (NYSE:GT) shares advanced 5.71 percent to $12.95 in post market trading session on the news that Appaloosa Management founder David Tepper reported a 6.1 percent stake in GT.

Tyson Foods, Inc. (NYSE:TSN) shares gained 4.21 percent to $18.30 in aftermarket trading session. The company is expected to report first quarter net income of $0.62 per share compared to $0.42 per share in the same quarter a year-ago.

Vonage Holdings Corp. (NYSE:VG) shares advanced 3.13 percent to $3.62 in post market trading session. The stock has a 52 week low of $1.30 and 52 week high of $3.54 and has $746.52 million market capitalization.

China Yuchai International Ltd. (NYSE:CYD) shares advanced 2.66 percent to $29.75 in aftermarket trading session. The stock has a 52 week low of $12.30 and 52 week high of $32.98 and has $1.08 billion market capitalization.

Losers

DHT Holdings, Inc. (NYSE:DHT) shares plunged 8.46 percent to $4.65 in aftermarket trading session after the company revealed its plan to offer about 8 million shares of its common stock in an underwritten public offering, subject to market conditions.

Teekay Tankers Ltd. (NYSE:TNK) shares declined 7.14 percent to $11.19 in post market trading session after the company said it plans to sell 8.6 million shares of common stock in a public offering to raise money to repay debt.

RealD Inc. (NYSE:RLD) shares declined 7.05 percent to $22.80 in post market trading session as its third quarter net loss widens to $16.59 million or $0.34 per share compared to a net loss of $15.11 million or $0.61 per share in the same quarter a year-ago.

Las Vegas Sands Corp. (NYSE:LVS) shares declined 6.76 percent to $46.88 in post market trading session as its fourth quarter revenue missed analysts’ estimate. The company reported fourth quarter net income of $0.42 per share on of $2.02 billion revenue, while analysts expected net income of $0.39 per share on $2.07 billion revenue.

Netsuite Inc. (NYSE:N) shares declined 5.82 percent to $26.20 in post market trading session as its 2011 forecast fell short of analysts’ estimation. The company expects 2011 adjusted earnings of 16-19 cents per share against analysts’ expectations of 22 cents per share.