The top aftermarket NYSE gainers Wednesday were: Collective Brands, Red Hat, Vocera Communications, Guidewire Software, Petroquest Energy and Leapfrog Enterprises. The top aftermarket NYSE losers were: Newcastle Investment, American Greetings, Fortress Investment Group, Western Digital Corp, USG Corp and AVG Technologies NV.

Gainers:

Collective Brands, Inc. (PSS) shares climbed 15.24 percent to $21.25 in post market session on news that Korean retailer E-Land Group is mulling a $1.76 billion bid for the U.S based Footwear Company.

Red Hat, Inc. (RHT) shares climbed 8.25 percent to $55.63 in post market session. The company reported fourth quarter adjusted net profit of $57.2 million or $0.29 per share, up from $51.4 million or $0.26 per share in the same period a year-earlier, while analysts’ expected net income of $0.27 per share.

Vocera Communications, Inc. (VCRA) shares surged 7.56 percent to $22.62 in post market session.

Guidewire Software, Inc. (GWRE) shares surged 6.64 percent to $34.87 in aftermarket trading. The company stock slumped more than 6 percent in regular session.

Petroquest Energy Inc. (PQ) shares advanced 4.46 percent to $6.56 in aftermarket session. The stock has a 52-week low of $4.72, a 52-week high of $9.73 and $402.52 million in market capitalization.

Leapfrog Enterprises Inc. (LF) shares gained 4.04 percent to $8.49 in post market trading. The stock has a 52-week low of $2.57, a 52-week high of $8.48 and $542.42 million in market capitalization.

Losers:

Newcastle Investment Corp. (NCT) shares plunged 5.09 percent to $6.15 in post market trading. The company announced that it plans to make a public offering of 16,500,000 shares of its common stock, subject to market and other conditions.

American Greetings Corp. (AM) shares plunged 3.58 percent to $15.08 in aftermarket trading.

Fortress Investment Group LLC (FIG) shares declined 3.28 percent to $3.54 in post market trading. The stock has a 52-week low of $2.67, a 52-week high of $6.37 and $1.81 billion in market capitalization.

Western Digital Corp. (WDC) shares fell 2.66 percent to $41.05 in aftermarket trading. The stock has a 52-week low of $22.64, a 52-week high of $43.10 and $9.91 billion in market capitalization.

USG Corp. (USG) shares declined 2.29 percent to $2.29 in post market trading.

AVG Technologies NV (AVG) shares declined 2.12 percent to $15.00 in post market trading. The company stock gained nearly 3 percent in regular trading.

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