The top aftermarket NYSE gainers on Wednesday were: Radioshack Corp, Bridgepoint Education, Webster Financial, Kosmos Energy, Beam Inc, Chico's FAS, Joy Global, Seacor Holdings, Dana Holding and Saks Inc.

Radioshack Corp. (NYSE:RSH) shares surged 8.95 percent to $10.96 in post market trading session on Wednesday. The company stock was upgraded to “equal weight” rating from “underweight” rating at Barclays.

Bridgepoint Education Inc. (NYSE:BPI) shares surged 5.28 percent to $26.11 in aftermarket trading session. The company stock plunged more than 5 percent in regular trading session.

Webster Financial Corp. (NYSE:WBS) shares surged 4.8 percent to $22.03 in post market trading session. The stock has a 52-week low of $14.34, a 52-week high of $23.73 and $1.87 billion in market capitalization.

Kosmos Energy Ltd. (NYSE:KOS) shares advanced 4.4 percent to $14.01 in aftermarket trading session. The company announced on Wednesday that the Ntomme-2A appraisal well, located in the Deepwater Tano Block offshore Ghana, has successfully encountered significant quantities of light oil.

Beam Inc. (NYSE:BEAM) shares gained 4.32 percent to $18.58 in aftermarket trading session.

Chico's FAS Inc. (NYSE:CHS) shares advanced 3.79 percent to $11.51 in post market trading session. The stock has a 52-week low of $9.57, a 52-week high of $16.50 and $1.84 billion in market capitalization.

Joy Global Inc. (NYSE:JOY) shares rose 2.92 percent to $83.89 in aftermarket trading session.

Seacor Holdings Inc. (NYSE:CKH) shares gained 2.89 percent to $91.07 in aftermarket trading session. The company announced that its Board of Directors has increased its authorization for repurchases of SEACOR's common stock for a total authorized expenditure of up to $150 million for the purchase of such securities from the $41.8 million remaining under the Board's authorization for repurchases approved on Feb. 18, 2010.

Dana Holding Corp. (NYSE:DAN) shares gained 2.83 percent to $14.92 in aftermarket trading session. The stock has a 52-week low of $9.45, a 52-week high of $19.35 and $2.11 billion in market capitalization.

Saks Inc. (NYSE:SKS) shares advanced 2.68 percent to $9.20 in aftermarket trading session.

Nyse Radioshack Barclays Ghana