The top after-market NYSE gainers on Wednesday are: Polypore International, Jarden, iStar Financial, Calgon Carbon and K-V Pharmaceutical. The top after-market NYSE losers are: American Equity Investment, St. Joe, Magna International, Tenet Healthcare and Whiting Petroleum.

Gainers

Polypore International Inc. (NYSE:PPO) shares climbed 12.05 percent to $55.50 in post market trading session on Wednesday. The company swung to fourth net income of $17.7 million, or $0.38 per share compared to net loss of $131 million or $2.95 per share in the same quarter a year-ago.

Jarden Corp. (NYSE:JAH) shares gained 4.83 percent to $34.76 in aftermarket trading session. The stock has a 52 week low of $1.44 and 52 week high of $4.88 and has $116.56 million market capitalization.

iStar Financial Inc. (NYSE:SFI) shares advanced 4.59 percent to $9.35 in post market trading session. The company announced on Wednesday that it has engaged J.P. Morgan to arrange up to $3.0 billion in new senior secured credit facilities, the proceeds of which would be used to refinance the Company's secured loan facilities due to mature in June 2011 and 2012, as well as repay a portion of the Company's unsecured debt maturing in 2011.

Calgon Carbon Corp. (NYSE:CCC) shares advanced 4.12 percent to $14.15 in aftermarket trading session. The company reported fourth quarter net income of $12.5 million or $0.22 per share compared to $13.2 million or $0.23 per share in the same quarter a year-ago. Net sales rose to $131.5 million from $110.7 million of 2009.

K-V Pharmaceutical Co. (NYSE:KV.A) shares advanced 4.03 percent to $7.75 in aftermarket trading session.

Losers

American Equity Investment Life Holding Co. (NYSE:AEL) shares plunged 16.98 percent to $11.00 in aftermarket trading session. Its fourth quarter net income plunged to $9.04 million or $0.14 per share from $36.02 million or $0.60 per share in the same period last year.

St. Joe Co. (NYSE:JOE) shares slumped 13.51 percent to $23.81 in post market trading session after the company said it would delay the release of its fourth quarter and fiscal-year results.

Magna International, Inc. (NYSE:MGA) shares declined 6.24 percent to $52.25 in post market trading session. The company reported fourth quarter net income of $0.88 per share against analysts’ estimation of $1.00 per share.

Tenet Healthcare Corp. (NYSE:THC) shares declined 4.49 percent to $6.59 in aftermarket trading session. The stock has a 52 week low of $3.92 and 52 week high of $7.10 and has $3.35 billion market capitalization.

Whiting Petroleum Corp. (NYSE:WLL) shares declined 3.61 percent to $61.22 in post market trading session.

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