Benzinga's Top #PreMarket Gainers

eLong, Inc. (ADR) LONG shares climbed 36.80 percent to $28.25 in pre-market trading following the announcement of Ctrip.com International, Ltd. (ADR) CTRP stake. Ctrip acquired a 37.6 percent equity stake in eLong. Eagle Rock Energy Partners, L.P. EROC shares rose 15.92 percent to $2.84 in pre-market trading after the company agreed to be acquired by Vanguard Natural Resources, LLC VNR. Oncothyreon Inc (USA) ONTY shares surged 10.76 percent to $2.78 in pre-market trading after gaining 3.72 percent on Thursday. Synergy Pharmaceuticals Inc SGYP gained 7.23 percent to $4.60 in pre-market trading after the rising 7.25 percent on Thursday. Canaccord Genuity initiated coverage on Synergy Pharmaceuticals with a Buy rating and a $11.00 price target. AVEO Pharmaceuticals, Inc. AVEO shares gained 5.83 percent to $2.36 in the pre-market trading session after jumping 39.38 percent on Thursday.