Benzinga’s Top Pre-Market Gainers (SNWL, HERO, JOYG, ACGY, ATPG)

SonicWALL Inc

soared 25.58% to $11.29 in the pre-market session. SNWL is about to be acquired by Thoma Bravo LLC and the Ontario Teachers' Pension Plan (Teachers') for approximately $717 million. Hercules Offshore Inc

added 12.17% to $2.95 in pre-market trading. MicroStockProfit.com issued an investment report on HERO that features the industry information and the company’s financial, comparative and investment analyses. Joy Global Inc

climbed 10.03% to $57.71 in the pre-market session. JOYG’s Q2 results beat Wall Street expectations. The company has also upped its forecasts for 2010. Acergy SA

moved up 4.32% to $15.20 in pre-market trading. ACGY has been upgraded by Nomura from “neutral” to “buy.” ATP Oil & Gas Corp

gained 3.68% to $9.58 in the pre-market session. ATPG was one of the top losers in yesterday’s trading. Read more