The top aftermarket NYSE gainers on Friday were: AOL, CVR Energy, Frontline, Dolby Laboratories and Covance. The top after market NYSE Losers were: Wabash National Corp, Kemet Corp, Walter Energy, Primerica and Teekay Tankers.

Gainers:

AOL Inc. (NYSE:AOL) shares gained 5.04 percent to $15.68 in aftermarket trading session. The company stock plunged more than 5 percent in regular trading session.

CVR Energy Inc. (NYSE:CVI) shares advanced 3.04 percent to $23.75 in aftermarket trading session. The company stock gained more than 3 percent in regular trading session after Billionaire Carl Icahn and his affiliates said that they have picked up a 14.54 percent stake in CVI.

Frontline Ltd. (NYSE:FRO) shares gained 3.04 percent to $4.75 in post market trading session. The stock has a 52-week low of $2.52, a 52-week high of $27.51 and $358.93 million in market capitalization.

Dolby Laboratories Inc. (NYSE:DLB) shares advanced 2.78 percent to $33.30 in aftermarket trading session. The company stock declined nearly 3 percent in regular trading session.

Covance Inc. (NYSE:CVD) shares advanced 2.61 percent to $44.89 in post market trading session.

Losers:

Wabash National Corp. (NYSE:WNC) shares slumped 7.99 percent to $7.60 in post market trading session. The stock has a 52-week low of $4.22, a 52-week high of $13.17 and $566.04 million in market capitalization.

Kemet Corp. (NYSE:KEM) shares declined 4.6 percent to $7.05 in post market trading session after lowering its third quarter revenue guidance.

For the third quarter, the company currently expects revenue to be in the range of $217 to $219 million compared to prior estimation of $228 to $238 million and against analysts’ estimation of $232.76 million.

Walter Energy Inc. (NYSE:WLT) shares declined 3.74 percent to $56.55 in post market trading session after lowering its 2012 coal production outlook. The company currently expects that 2012 met coal production will be between 11.5 million and 13 million metric tons compared to earlier estimation of 13 to 14 million metric tons.

Primerica Inc. (NYSE:PRI) shares declined 3.41 percent to $23.50 in aftermarket trading session. The stock has a 52-week low of $18.72, a 52-week high of $26.20 and $1.80 billion in market capitalization.

Teekay Tankers Ltd. (NYSE:TNK) shares declined 2.61 percent to $4.10 in post market trading session.

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