Benzinga's Top #PreMarket Gainers

Synageva Biopharma Corp GEVA shares surged 130.99 percent to $221.45 in pre-market trading after Alexion Pharmaceuticals, Inc. ALXN announced its plans to acquire Synageva for $8.4 billion. Borderfree Inc BRDR gained 105.01 percent to $13.92 in pre-market trading after the company agreed to be acquired by Pitney Bowes Inc. PBI for $14.00 per share in cash. Moneygram International Inc MGI shares rose 23.21 percent to $9.61 in pre-market trading following Tuesday's Bloomberg report that the company is in talks to be acquired by The Western Union Company WU. Herbalife Ltd. HLF shares gained 15.61 percent to $46.35 in the pre-market trading session after the company reported stronger-than-expected earnings for the first quarter and lifted its outlook for the full year. Energy XXI Ltd EXXI shares climbed 7.86 percent to $4.39 in pre-market trading after the company declared regular quarterly dividends on common and preferred shares. The company's board declared a quarterly dividend of $0.01 per share of common stock.