Benzinga's Volume Movers

Envision Healthcare Holdings Inc (NYSE: EVHC) surged 8.42 percent to $27.81. The volume of Envision Healthcare shares traded was 456 percent higher than normal. Envision Healthcare Holdings is said to be in discussions with Amsurg Corp (NASDAQ: AMSG), regarding a potential merger, according to sources as reported by Dow Jones on Wednesday. A deal could be announced as early as next week, the sources said.

Wix.Com Ltd (NASDAQ: WIX) shares moved up 4.83 percent to $29.30. The volume of Wix.Com traded was 392 percent higher than normal. Wix.Com shares have surged 14.60 percent over the past 52 weeks, while the S&P 500 index has gained 0.49 percent in the same period.

Hemisphere Media Group Inc (NASDAQ: HMTV) shares climbed 5.49 percent to $11.33. The volume of Hemisphere Media Group shares traded was 330 percent higher than normal. Hemisphere Media repurchased 2.8 million shares from Luxor Capital Group at $10.50 per share for a total of $29.4 million.

ABM Industries, Inc. (NYSE: ABM) shares rose 6.67 percent to $37.08. The volume of ABM Industries shares traded was 306 percent higher than normal. ABM Industries reported better-than-expected Q2 earnings.