Benzinga's Top #PreMarket Losers

Westport Innovations

dropped 23.60% to $8.03 in pre-market trading after the company offered technology, investment, market and sales update. The company lowered its full-year revenue forecast. Automatic Data Processing

shares slipped 13.34% to $72.00 in pre-market trading after the company closed the spinoff of CDK Global. eBay

fell 2.47% to $55.23 in pre-market trading following downgrades. Jefferies downgraded eBay from Buy to Neutral. JetBlue Airways

shares dropped 2.54% to $10.35 in pre-market trading after rising 0.85% on Tuesday.