The top after-market NYSE gainers Tuesday were New York Times, International Business Machines, LDK Solar Co, MGIC Investment and Berry Plastics Group Inc, while the top after-market NYSE losers were STR Holdings, Annies, WESCO International, Yingli Green Energy and Senior Housing Properties Trust.

Gainers

New York Times Co. (NYSE:NYT) shares rallied 7.67 percent to $9.40 in post-market trading. The stock has a 52-week low of $5.88, a 52-week high of $11.06 and $1.30 billion in market capitalization.

International Business Machines Corp. (NYSE:IBM) shares surged 4.11 percent to $204.14 in post-market trading. The company reported fourth quarter net profit of $5.8 billion or $5.13 per share, up from $5.5 billion or $4.62 per share in the same period last year. Adjusted net profit was $5.39 per share compared to $4.71 per share last year and also topped Reuters' estimation of $5.25 per share.

LDK Solar Co Ltd. (NYSE:LDK) shares surged 4.06 percent to $2.05 in post-market trading. The company announced Tuesday that it has entered into a share purchase agreement dated Jan. 21, 2013 with Fulai Investments Limited, which has agreed to purchase 17 million new shares of LDK solar at a purchase price of $1.83 per share with an aggregate purchase price of $31 million.

MGIC Investment Corp. (NYSE:MTG) shares gained 3.68 percent to $3.10 in post-market trading after climbing more than 6 percent in regular trading. The stock has a 52-week low of $0.66, a 52-week high of $5.15 and $604.08 million in market capitalization.

Berry Plastics Group Inc. (NYSE:BERY) shares gained 2.90 percent to $18.10 in post-market trading. The stock has a 52-week low of $13.12, a 52-week high of $17.62 and $1.98 billion in market capitalization.

Losers

STR Holdings Inc. (NYSE:STRI) shares tumbled 12.58 percent to $2.71 in post-market trading. The company announced Tuesday that it believes that First Solar, Inc., a long-standing customer, will terminate its relationship with the firm in 2013. STR Holdings expects that First Solar will begin the transition journey in the first quarter of 2013, completely cutting over to a new supplier during the course of the next few months.

Annies Inc. (NYSE:BNNY) shares slumped 10.63 percent to $34.38 in post-market trading. The company has initiated a voluntary recall of Annie’s Homegrown Frozen Pizza due to the possible presence of fragments of flexible metal mesh caused by a faulty screen at a third-party flour mill.

WESCO International Inc. (NYSE:WCC) shares plunged 4.07 percent to $69.28 in post-market trading. The company stock surged more than 4 percent in regular trading.

Yingli Green Energy Holding Co Ltd. (NYSE:YGE) shares declined 3.65 percent to $2.86 in post-market trading. The company stock climbed 10 percent in regular trading.

Senior Housing Properties Trust (NYSE:SNH) shares fell 3.53 percent to $23.79 in post-market trading. The company announced Tuesday that it commenced a public offering of 8,000,000 common shares.

NYSE Euronext Investment Ibm