Benzinga's Top Pre-Market Gainers

SoundBite Communications SDBT surged 63.89% to $4.90 in the pre-market session after Genesys announced its plans to acquire SoundBite Communications. AcelRx Pharmaceuticals ACRX soared 15.79% to $7.48 in the pre-market trading after the company announced positive results from Phase 3 study of Sufentanil NanoTab PCA system. FX Energy FXEN added 14.08% to $4.05 in the pre-market session after the company repored successful production test at Tuchola-3K well. JA Solar Holdings Co JASO moved up 11.22% to $10.63 in the pre-market session on Q1 results.