The top after-market NASDAQ Stock Market gainers are: Cytori Therapeutics, Universal Stainless & Alloy Products, Vermillion, Harbin Electric and Affymetrix. The top after-market NASDAQ Stock Market losers are: AVEO Pharmaceuticals, BreitBurn Energy Partners, Ameristar Casinos, East West Bancorp and Merge Healthcare.

Gainers:

Cytori Therapeutics Inc. (NASDAQ:CYTX) shares gained 4.98 percent to $5.06 in post market trading session. The stock has a 52 week low of $3.15 and 52 week high of $8.44 and has $252.91 billion market capitalization.

Universal Stainless & Alloy Products, Inc. (NASDAQ:USAP) shares gained 4.45 percent to $32.65 in aftermarket trading session. The company announced that it has signed an agreement to purchase the assets of Patriot Special Metals located in North Jackson, Ohio.

Vermillion, Inc. (NASDAQ:VRM) shares advanced 3.49 percent to $4.15 in aftermarket trading session. The company stock plunged more than 7 percent in regular trading session.

Harbin Electric, Inc. (NASDAQ:HRBN) shares advanced 2.66 percent to $15.80 in post market trading session.

Affymetrix, Inc. (NASDAQ:AFFX) shares gained 1.93 percent to $7.40 in post market trading session.

Losers:

AVEO Pharmaceuticals, Inc. (NASDAQ:AVEO) shares plunged 6.5 percent to $17.85 in post market trading session. The company announced that it has commenced an underwritten public offering of shares of its common stock.

BreitBurn Energy Partners, L.P. (NASDAQ:BBEP) shares declined 5 percent to $19.57 in aftermarket trading session. The company announced that it has commenced a registered underwritten public offering of 7 million units of BBEP.

Ameristar Casinos, Inc. (NASDAQ:ASCA) shares declined 3.76 percent to $20.99 in post market trading session. The company stock surged more than 6 percent in regular trading session.

East West Bancorp, Inc. (NASDAQ:EWBC) shares declined 3.04 percent to $18.195. The company stock was upgraded to “outperform” rating at KBW.

Merge Healthcare Inc. (NASDAQ:MRGE) shares declined 2.82 percent to $4.83 in post market trading session. The stock has a 52 week low of $2.46 and 52 week high of $6.19 and has $418.83 million market capitalization.