Benzinga’s Top Pre-Market NASDAQ Gainers (CYPB, ZAGG, ARNA, YHOO)

Cypress Bioscience Inc CYPB rose 35.60% to $3.39 in the pre-market session. Ramius LLC has offered to acquire all the outstanding shares of CYPB for $4.00 per share in cash. ZAGG Incorporated ZAGG added 9.96% to $2.87 in pre-market trading. ZAGG has offered solutions to resolve the antenna issue of Apple AAPL iPhone 4. Arena Pharmaceuticals Inc ARNA moved up 3.86% to $4.84 in pre-market trading. Research has found out that the company's experimental weight-loss drug yielded better results than a placebo. Yahoo! Inc YHOO gained 1.68% to $15.15 in the pre-market session. YHOO is all set to report its Q2 earnings tomorrow. Read more from Benzinga's Company news.