The top after-market NYSE gainers on Wednesday are: SFN Group, Robert Half International, Badger Meter, Aegean Marine Petroleum and Blackstone Group. The top after-market NYSE losers are: Genworth Financial, Western Digital, Freescale Semiconductor, Vanceinfo Technologies and Terex Corp.

Gainers:

SFN Group, Inc. (NYSE:SFN) shares climbed 51.74 percent to $13.99 in post market trading session. The company announced that it has entered into a definitive agreement with Randstad Holding NV whereby Randstad will acquire SFN Group through a cash tender offer.

Robert Half International Inc. (NYSE:RHI) shares surged 9.45 percent to $28.26 in aftermarket trading session. Its second quarter net income tripled from last year due to revenue growth amid increases across all its operational segments. Net income rose to $35.89 million or $0.25 per share from $11.66 million or $0.08 per share in the same period a year ago.

Badger Meter, Inc. (NYSE:BMI) shares surged 5.83 percent to $40.10 in post market trading session. The company reported second quarter net income of $7.83 million or $0.52 per share compared to $8.03 million or $0.53 per share in the same quarter last year. Net sales rose to $75.15 million from $74.29 million a year-ago.

Aegean Marine Petroleum Network Inc. (NYSE:ANW) shares gained 5.45 percent to $6 in aftermarket trading session. The company announced that its Board of Directors has approved a share repurchase program for up to 2,000,000 shares of the Company's common stock.

Blackstone Group L.P. (NYSE:BX) shares gained 2.71 percent to $16.70 in post market trading session.

Losers:

Genworth Financial Inc. (NYSE:GNW) shares slumped 8.66 percent to $8.65 in post market trading session after announcing that it expects to report a loss for the second quarter. The company expects to report an estimated net loss of $92 million to $112 million, or $0.19 or $0.23 per share compared with net income of $118 million or $0.24 per share in the same quarter last year.

Western Digital Corp. (NYSE:WDC) shares plunged 5.46 percent to $36.00 in aftermarket trading session. The stock has a 52 week low of $23.06 and 52 week high of $41.87 and has $8.85 billion market capitalization.

Freescale Semiconductor Holdings I, Ltd. (NYSE:FSL) shares plunged 5.18 percent to $16.30 in post market trading session. Its second quarter net loss narrowed to $168 million or $0.79 per share from $538 million or $2.73 per share in the same period a year-ago.

Vanceinfo Technologies Inc. (NYSE:VIT) shares declined 5.16 percent to $18.27 in aftermarket trading session.

Terex Corp. (NYSE:TEX) shares declined 3.71 in aftermarket trading session. The company reported second quarter net loss of $0.5 million or breakeven per share compared to a net loss of $40.3 million or $0.37 per share in the same quarter last year.

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