The top after-market NYSE gainers Thursday were Dole Food, InvenSense, Heckmann, Vanguard Natural Resources and BHP Billiton plc. The top after-market NYSE losers were Frontline, KBR, Tilly's, Colony Financial and Seadrill Partners.

Gainers

Dole Food Co, Inc. (NYSE:DOLE) shares surged 2.48 percent to $10.35 in post-market trading. The stock has a 52-week low of $8.02, a 52-week high of $15.19 and $897.11 million in market capitalization.

InvenSense, Inc. (NYSE:INVN) shares gained 2.41 percent to $12.74 in post-market trading. The analysts at Maxim Group Thursday raised their price target on shares of InvenSense to $15.00 from $14.00.

Heckmann Corp. (NYSE:HEK) shares advanced 2.02 percent to $4.05 in post-market trading. The company stock was upgraded to a “neutral” rating from a “sell” rating at Ladenburg Thalmann Tuesday.

Vanguard Natural Resources LLC (NYSE:VNR) shares rose 1.87 percent to $28.35 in post-market trading. The stock has a 52-week low of $22.81, a 52-week high of $30.22 and $1.64 million in market capitalization.

BHP Billiton plc (NYSE:BBL) shares gained 1.70 percent to $70.00 in post-market trading. The stock has a 52-week low of $51.34, a 52-week high of $72.40 and $72.66 million in market capitalization.

Losers

Frontline Ltd. (NYSE:FRO) shares tumbled 10.96 percent to $3.25 in post-market trading. The company stock surged more than 7 percent in regular trading.

KBR, Inc. (NYSE:KBR) shares slumped 7.19 percent to $29.70 in post-market trading. The company currently expects fiscal 2012 adjusted net profit to be in a range of $1.95 to $2.10, sharply lower from its prior estimate of $2.60 to $2.80 per share and also fell short of the analysts’ estimate of a net profit of $2.66 per share.

Tilly's, Inc. (NYSE:TLYS) shares plunged 2.30 percent to $12.76 in post-market trading. The company announced Thursday that its comparable store sales, including e-commerce sales, for the Holiday period (ten weeks ended January 5, 2013) decreased 1 percent, compared to a 5 percent increase for the same period in the prior year.

Colony Financial, Inc. (NYSE:CLNY) shares fell 1.91 percent to $20.55 in post-market trading. The company announced Thursday that it plans to commence a public offering of 5,000,000 shares of common stock.

Seadrill Partners LLC (NYSE:SDLP) shares fell 1.86 percent to $27.04 in post-market trading. The stock has a 52-week low of $22.90, a 52-week high of $28.00 and $1.14 billion in market capitalization.

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