The top aftermarket NYSE gainers Thursday were: Jefferies Group, Con-way, Genpact, Suntech Power Holdings, American Vanguard, Global Cash Access Holdings, CenturyLink, Chesapeake Energy and Alliant Techsystems.

Jefferies Group, Inc. (NYSE:JEF) shares climbed 10.63 percent to $11.97 in post market trading session. The company clarified Thursday that it had no meaningful net exposure to European sovereign debt.

Con-way Inc. (NYSE:CNW) shares climbed 9.48 percent to $32 in aftermarket trading session. The company swung to third quarter net profit of $29.1 million, or $0.52 per share compared to net loss of $8.2 million or $0.15 per share in the same period a year earlier.

Genpact Ltd. (NYSE:G) shares surged 7.3 percent to $17.50 in aftermarket trading session. Its third quarter net profit rose to $48.0 million or $0.21 per share from $40.1 million or $0.18 per share in the same quarter a year-ago.

Suntech Power Holdings Co., Ltd. (NYSE:STP) shares surged 6.72 percent to $2.70 in post market trading session. The stock has a 52-week low of $1.70, a 52-week high of $10.83 and $455.78 million in market capitalization.

American Vanguard Corp. (NYSE:AVD) shares surged 6.54 percent to $14 in post market trading session. The company stock gained more than 7 percent in regular trading session.

Global Cash Access Holdings, Inc. (NYSE:GCA) shares gained 5.96 percent to $3.20 in aftermarket trading session. The company announced that it has entered into a definitive agreement to acquire substantially all of the assets of MCA Processing LLC (MCA).

CenturyLink, Inc. (NYSE:CTL) shares advanced 5.93 percent to $36.60 in post market trading session.

Chesapeake Energy Corp. (NYSE:CHK) shares gained 5.92 percent to $30.75 in post market trading session. The company reported third quarter net profit of $879 million or $1.23 per share, up from $515 million or $0.75 per share in the same period a year earlier.

Alliant Techsystems Inc. (NYSE:ATK) shares gained 5.24 percent to $63.09 in post market trading session. The company reported second quarter net profit of $79.99 million or $2.43 per share compared to $97.25 million or $2.91 per share in the same quarter last year, while analysts’ expected net income of $2.06 per share for the quarter.

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