Benzinga's Top #PreMarket Gainers

Zynga (NASDAQ: ZNGA ) soared 18.26% to $4.21 in the pre-market trading after the company announced its plans to lower its workforce by 15%. The company also announced that it is buying NaturalMotion for $527 million. Ballard Power Systems (NASDAQ: BLDP ) shares gained 12.24% to $2.20 in