The top aftermarket NYSE gainers Friday were: National Bank of Greece SA, Chesapeake Granite Wash, W.W. Grainger, Beazer Homes USA, Health Management Associates and Imperial Holdings. The top after market NYSE Losers were: Inphi Corp, Spartech Corp, Aeroflex Holding Corp, K-V Pharmaceutical, A.H. Belo Corp and Talbots.

Gainers:

National Bank of Greece SA (NYSE:NBG) shares surged 4.72 percent to $2.66 in aftermarket trading sessions. The stock has a 52-week low of $1.64, a 52-week high of $11.85 and $2.43 billion in market capitalization.

Chesapeake Granite Wash Trust (NYSE:CHKR) shares gained 3.85 percent to $24 in aftermarket trading sessions.

W.W. Grainger, Inc. (NYSE:GWW) shares advanced 3.59 percent to $207.85 in post-market trading sessions. Analysts’ at UBS raised their earnings per share (EPS) estimates on shares of GWW.

Beazer Homes USA, Inc. (NYSE:BZH) shares gained 3.33 percent to $3.10 in post-market trading sessions.

Health Management Associates, Inc. (NYSE:HMA) shares advanced 2.88 percent to $6.44 in post-market trading sessions. The stock has a 52-week low of $4.81, a 52-week high of $11.74 and $1.59 billion in market capitalization.

Imperial Holdings, Inc. (NYSE:IFT) shares gained 2.38 percent to $2.19 in aftermarket trading sessions.

Losers:

Inphi Corp. (NYSE:IPHI) shares plunged 8.83 percent to $12.29 in post-market trading sessions. The company stock climbed nearly 10 percent in regular trading sessions.

Spartech Corp. (NYSE:SEH) shares plunged 5.03 percent to $5.46 in aftermarket trading sessions. The company stock was downgraded to “neutral” rating from an “outperform” rating at Zacks Investment Research.

Aeroflex Holding Corp. (NYSE:ARX) shares declined 3.19 percent to $13.06 in aftermarket trading sessions. The stock has a 52-week low of $7.19, a 52-week high of $20.36 and $1.14 billion in market capitalization.

K-V Pharmaceutical Co. (NYSE:KV.A) shares declined 2.84 percent to $2.05 in aftermarket trading sessions. The company stock surged more than 9 percent in regular trading sessions.

A.H. Belo Corp. (NYSE:AHC) shares declined 2.5 percent to $5.24 in aftermarket trading sessions.

Talbots, Inc. (NYSE:TLB) shares declined 2.46 percent to $3.11 in aftermarket trading sessions. The company stock climbed more than 18 percent in regular trading session after TLD is rumored to be under consideration for a takeover by two private equity firms.

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