The top after-market NYSE gainers Wednesday were: Spartech Corp, Haverty Furniture, SuperValu, Orbitz Worldwide and Unifi. The top after-market NYSE losers were: Korn/Ferry International, Winnebago Industries, Select Income REIT, Radian Group and Yelp.

Gainers

Spartech Corp (SEH) shares surged 4.17 percent to $4.00 in post-market trading. The company reported second adjusted net profit of $0.12 per share, up from $0.10 per share in the same quarter a year earlier. Net revenue rose 6 percent to $298.3 million from the prior year quarter.

Haverty Furniture Companies, Inc (HVT) shares surged 3.83 percent to $10.97 in post-market trading. The company stock plunged nearly 4 percent in regular trading.

SuperValu Inc (SVU) shares gained 3.75 percent to $4.43 in post market trading. The company announced Wednesday that it is expanding its Essential Everyday brand to 2,700 of the most shopped-for products across more than 100 categories throughout the grocery store by 2013.

Orbitz Worldwide, Inc (OWW) shares rose 3.36 percent to $3.64 in post-market trading.

Unifi, Inc (UFI) shares advanced 2.89 percent to $11.64 in post-market trading. The company stock plunged nearly 3 percent in regular trading.

Losers

Korn/Ferry International (KFY) shares declined 2.74 percent to $12.80 in post-market trading. The company reported fourth quarter net profit of $12.03 million or $0.25 per share, down from $20.34 million or $0.43 per share in the same period a year earlier.

Winnebago Industries, Inc (WGO) shares declined 2.67 percent to $8.75 in post-market trading. The company is expected to report third quarter net income of $0.12 per share before the markets open Thursday.

Select Income REIT (SIR) shares fell 2.31 percent to $21.59 in post-market trading.

Radian Group Inc (RDN) shares declined 1.98 percent to $2.47 in post-market trading. The stock has a 52-week low of $1.80, a 52-week high of $4.84 and $335.90 million in market capitalization.

Yelp Inc (YELP) shares fell 1.81 percent to $19.42 in post-market trading. The stock has a 52-week low of $14.10, a 52-week high of $31.96 and $1.21 billion in market capitalization.