The top after-market NYSE gainers on Thursday are: Newpark Resources, Valmont Industries, Assured Guaranty, Yingli Green and Pilgrim's Pride. The top after-market NYSE losers are: Home Properties, El Paso, Corn Products International, Nordstrom and First Marblehead.

Gainers

Newpark Resources, Inc. (NYSE:NR) shares climbed 11.54 percent to $7.25 in aftermarket trading session. The company reported fourth quarter net income of $0.15 per share against analysts’ estimation of $0.09 per share. Revenue rose to $194.5 million against estimation of $179.88 million.

Valmont Industries, Inc. (NYSE:VMI) shares advanced 4.55 percent to $102.00 in post market trading session after the company said its fourth quarter net earnings rose to $34.9 million or $1.32 per share from $30.0 million or $1.14 per share in the same quarter a year-ago.

Assured Guaranty Ltd. (NYSE:AGO) shares gained 3.12 percent to $16.19 in post market trading session. The stock has a 52 week low of $12.63 and 52 week high of $24.90 and has $2.88 billion market capitalization.

Yingli Green Energy Holding Co Ltd. (NYSE:YGE) shares advanced 2.57 percent to $13.17 in aftermarket trading session. Collins Stewart maintained Buy rating and $13.50 price target on YGE.

Pilgrim's Pride Corp. (NYSE:PPC) shares advanced 2.5 percent to $8.61 in after market trading session. The stock has a 52 week low of $5.35 and 52 week high of $13.05 and has $1.8 billion market capitalization.

Losers

Home Properties, Inc. (NYSE:HME) shares plunged 4.47 percent to $53.00 in post market trading session after the company said its fourth quarter net income declined to $6.77 million or $0.18 per share compared to $12.23 million or $0.36 per share in the quarter last year.

El Paso Corp. (NYSE:EP) shares declined 3.72 percent to $17.33 in post market trading session. Its shares gained 3.87 percent to $18.00 in regular session after Raymond James upgraded EP from Market Perform to Outperform.

Corn Products International, Inc. (NYSE:CPO) declined 3.67 percent to $48.60 in aftermarket trading session after the company said its fourth quarter net income declined, mainly hurt by charges related to the acquisition of National Starch business. Net income declined to $52 million or $0.67 per share compared to $56.3 million or $0.74 per share in the same quarter last year.

Nordstrom, Inc. (NYSE:JWN) shares declined 3.01 percent to $45.08 in aftermarket trading session after the company said it has entered into an agreement to acquire HauteLook, Inc.

First Marblehead Corp. (NYSE:FMD) shares declined 2.12 percent to $2.49 in post market trading session. The stock has a 52 week low of $1.94 and 52 week high of $4.08 and has $256.11 million market capitalization.