The top after-market NYSE losers on Thursday are: Youku.com, BRE Properties, Dolby Laboratories, Sandridge Energy, Alexandria Real Estate Equities, Western Refining, Carefusion, Sunoco, Warner Music Group and Canadian Natural Resources Ltd.

Youku.com Inc. (NYSE:YOKU) shares plunged 5.17 percent to $54.62 in aftermarket trading session. The company announced Its Intention to file a registration statement with the Securities and Exchange Commission relating to an offering of its ADSs by Youku and certain of its pre-IPO investors.

BRE Properties, Inc. (NYSE:BRE) shares declined 4.02 percent to $48.25 in post market trading session. The company announced that it will offer 8 million shares of its common stock in an underwritten registered offering.

Dolby Laboratories (NYSE:DLB) shares declined 4 percent to $48.74 in post market trading session. Its second quarter net income declined to $82.1 million or $0.72 per share compared to $85.9 million or $0.74 per share in the same quarter last year.

Sandridge Energy Inc. (NYSE:SD) shares declined 3.75 percent to $10.27 in aftermarket trading session. The company swung to first quarter net loss of $316.3 million or $0.79 per share compared to net income of $18.6 million or $0.09 per share in the same quarter last year.

Alexandria Real Estate Equities, Inc. (NYSE:ARE) shares declined 3.44 percent to $76.00 in post market trading session. The company announced that it is commencing an underwritten public offering of 5,500,000 shares of common stock.

Western Refining, Inc. (NYSE:WNR) shares declined 3.41 percent to $15.00 in post market trading session. The company swung to first quarter net income of $12.2 million or $0.13 per share compared to net loss of $30.7 million or $0.35 per share in the same period a year-ago.

Carefusion Corp. (NYSE:CFN) shares declined 3.18 percent to $28.00 in aftermarket trading session. The company reported third quarter net income of $94 million or $0.42 per share compared to $53 million or $0.24 per share in the same period last year.

Sunoco Inc. (NYSE:SUN) shares declined 2.67 percent to $38.99 in post market trading session. Its first quarter net loss widened to $101 million or $0.84 per share compared to $63 million or $0.53 per share in the same period a year-ago.

Warner Music Group Corp. (NYSE:WMG) shares declined 1.9 percent to $7.75 in aftermarket trading session. Its shares surged 6.47 percent in regular trading session.

Canadian Natural Resources Ltd. (NYSE:CNQ) shares declined 1.9 percent to $41.86 in post market trading session.

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