The top after-market NYSE gainers Wednesday were Global Cash Access Holdings, LifeLock, CommonWealth, Freescale Semiconductor and MEMC Electronic Materials. The top after-market NYSE losers were Teekay Tankers, MasTec, Accretive Health and Blyth.

Gainers

Global Cash Access Holdings, Inc. (GCA) shares climbed 6.73 percent to $7.30 in post-market trading. Its third quarter net profit rose to $0.10 per share from $0.03 per share in the same quarter last year. The company also raised its fiscal 2012 earnings guidance to a range $0.81 to $0.84 per share from its prior estimate of $0.76 to $0.82 per share.

LifeLock, Inc. (LOCK) shares surged 6.06 percent to $8.05 in post-market trading. Its third quarter net loss narrowed to $0.16 per share from $0.33 per share in the same period last year. Revenue surged 44 percent to $72.1 million from $50.0 million last year and also topped analysts’ estimate of $68.45 million.

CommonWealth REIT (CWH) shares surged 6.01 percent to $15.00 in post-market trading. The stock has a 52-week low of $13.46, a 52-week high of $21.43 and $1.18 billion in market capitalization.

Freescale Semiconductor, Ltd. (FSL) shares gained 5.49 percent to $9.69 in post-market trading. The company stock plunged more than 5 percent in regular trading.

MEMC Electronic Materials, Inc. (WFR) shares advanced 4.18 percent to $2.49 in post-market trading. The company stock slumped more than 6 percent in regular trading.

Losers

Teekay Tankers Ltd. (TNK) shares tumbled 11.18 percent to $3.02 in post-market trading. The company announced Wednesday that its Board of Directors has voted to declare a cash dividend of $0.02 per share for the quarter ended Sept. 30, 2012, payable on Nov. 26, 2012, to all shareholders of record on Nov. 19, 2012.

MasTec, Inc. (MTZ) shares plunged 4 percent to $23.03 in post-market trading. The company announced Wednesday that Jorge Mas, MasTec's Chairman, and Jose R. Mas, MasTec's Chief Executive Officer, agreed to sell pursuant to Rule 144 under the Securities Act a total of 3.3 million shares of MasTec common stock.

Accretive Health, Inc. (AH) shares fell 2.17 percent to $11.63 in post-market trading. The stock plunged more than 4 percent after the company reported that its third quarter net profit decline to $2.76 million or $0.03 per share from $7.27 million or $0.07 per share in the same period last year.

Blyth, Inc. (BTH) shares fell 2.13 percent to $17.17 in post-market trading. The stock has a 52-week low of $15.63, a 52-week high of $46.15 and $302.42 million in market capitalization.