Benzinga's Top #PreMarket Gainers

American Superconductor Corporation AMSC shares surged 14.29 percent to $4.40 in pre-market trading after the company raised its outlook for the third quarter. LoJack Corporation LOJN gained 5.90 percent to $3.68 in pre-market trading after CalAmp Corp. CAMP offered to acquire LoJack for $5.50 per share in cash. Cyberark Software Ltd CYBR shares climbed 4.24 percent to $40.56 in pre-market trading. JP Morgan upgraded CyberArk Software from Underweight to Overweight. GoPro Inc GPRO shares rose 2.84 percent to $17.37 in pre-market trading after dropping 3.92 percent on Wednesday. CalAmp Corp. CAMP shares rose 2.69 percent to $19.06 in pre-market trading after the company offered to acquire LoJack.