Benzinga's Top #PreMarket Gainers

Logitech International SA LOGI shares surged 15.75% to $15.43 in pre-market trading after the company reported better-than-expected quarterly results and raised its operating income forecast. Facebook FB shares jumped 9.68% to $78.19 in pre-market trading after the company reported stronger-than-expected second-quarter results on strong growth in daily users and advertising revenue. Ariad Pharmaceuticals ARIA shares gained 6.80% to $6.28 in pre-market trading after jumping 15.29% on Wednesday. Under Armour UA shares gained 5.72% to $64.10 in pre-market trading on Q2 results. Under Armour posted a quarterly net profit of $17.7 million, or $0.08 per share.