The top after-market NYSE gainers on Thursday are: Warner Music Group, American Reprographics, GMX Resources, Energy Transfer Partners and Aspen Insurance Holdings. The top after-market NYSE losers on Thursday are: International Game Technology, Emulex, Medley Capital, Jones Apparel and Kinross Gold.

Gainers

Warner Music Group Corp. (NYSE:WMG) shares surged 11.65 percent to $5.27 in afterhours trading session. The company is reportedly looking to sell itself off and hired Goldman Sachs Group Inc. to solicit takeover bids.

American Reprographics Co. (NYSE:ARC) shares advanced 5.11 percent to $8.23 in post market trading session. The stock has a 52 week low of $6.00 and 52 week high of $11.31 and has $358.02 M market capitalization.

GMX Resources, Inc. (NYSE:GMXR) shares advanced 4.49 percent to $5.35 in post market trading session. The company announced on Thursday that it boosted its reserves in the Haynesville/Bossier Play by more than 800 percent in 2010.

Energy Transfer Partners, L.P. (NYSE:ETP) shares advanced 4.13 percent to $53.41 in aftermarket trading session.

Aspen Insurance Holdings Ltd. (NYSE:AHL) shares advanced 3.37 percent to $30.10 in post market trading session. The company will replace Baldor Electric Co. (NYSE: BEZ) in the S&P MidCap 400 index after the close of trading on Tuesday, January 25.

Losers

International Game Technology (NYSE:IGT) shares declined 5.79 percent in aftermarket trading session after the company said its first-quarter profit increased slightly from last year, due to certain discrete tax benefits and gain on the sale of its equity investment. Its quarterly sales of $464.8 million missed analyst estimation.

Emulex Corp. (NYSE:ELX) shares declined 4.51 percent to $11.22 in post market trading session after the company said its third-quarter earnings may be as low as 8 cents a share, compared with analysts’ estimate of 11 cents. The company reported a second quarter net profit of $0.15 per share against analysts’ estimation of $0.15 per share.

Medley Capital Corp. (NYSE:MCC) shares declined 4.04 percent to $11.65 in aftermarket trading session. The company raised $133 million in its initial public offering of 11.11 million common shares at $12 per share on Thursday.

Jones Apparel Group, Inc. (NYSE:JNY) shares declined 3.12 percent to $13.35 in post market trading session. The company reported fourth quarter earnings per share of 2 cent per share against the consensus of 11 cents.

 Kinross Gold Corp (NYSE:KGC) shares declined 2.94 percent to $16.52 in aftermarket trading session. The stock has a 52 week low of $14.84 and 52 week high of $19.90 and has 1.13 billion outstanding shares.