The top after-market NYSE gainers on Monday are: International Coal Group, Aspen Insurance Holdings, New York Times, Harry Winston Diamond and Elan Corp. The top after-market NYSE losers on Monday are: Triangle Capital, One Liberty Properties, Principal Financial, FMC Corp and Becton.

Gainers

International Coal Group, Inc. (NYSE:ICO) shares gained 2.99 percent to $9.31 in aftermarket trading session after surging 7.88 percent in regular trading session on news that the company is reading itself for sale.

Aspen Insurance Holdings Ltd. (NYSE:AHL) shares gained 2.57 percent to $31.53 in post market trading session. The company reported fourth quarter net income of $1.02 per share against analysts’ estimation of $0.71 per share.

New York Times Co. (NYSE:NYT) shares advanced 2.29 percent to $11.15 in aftermarket trading session as newspaper stocks gained on Monday after AOL agreed to buy online news site Huffington Post for $315 million.

Harry Winston Diamond Corp. (NYSE:HWD) shares gained 2.13 percent to $12.50 in aftermarket trading session. The stock has a 52 week low of $9.35 and 52 week high of $14.72 and has $1.03 billion market capitalization.

Elan Corp. plc (NYSE:ELN) shares gained 2.05 percent to $6.97 in post market trading session. For fiscal 2011, the company expects adjusted EBITDA of approximately $200 million against analysts’ estimation of $166 million. The company also said that growth in total revenues is expected to accelerate in fiscal 2011 compared to fiscal 2010.

Losers

Triangle Capital Corp. (NYSE:TCAP) shares plunged 4.83 percent to $19.49 in aftermarket trading session. The company announced the commencement of a public offering of 2,500,000 shares of common stock in an underwritten public offering.

One Liberty Properties, Inc. (NYSE:OLP) shares declined 4.62 percent to $15.68 in post market trading session. The company said it plans to sell at least 2.7 million shares in an offering to the public.

Principal Financial Group Inc. (NYSE:PFG) shares declined 4.39 percent to $32.22 in post market trading session as its fourth quarter earnings fell short of analysts’ expectations.

FMC Corp. (NYSE:FMC) shares declined 4.11 percent to $77.75 in aftermarket trading session as its first quarter earnings guidance fell short of analysts’ expectations. The company said it expects first quarter earnings in the range of $1.35 to $1.50 per share against analysts’ estimation of $1.55 per share.

Becton, Dickinson and Co. (NYSE:BDX) shares declined 3.42 percent to $82.71 in aftermarket trading session. The stock has a 52 week low of $66.47 and 52 week high of $85.90 and has $19.38 billion market capitalization.