On The Fly: Pre-market Movers

HIGHER: OraSure (OSUR), up 9.9% after it was awarded up to $16.6M to advance rapid Zika tests... Tesla (TSLA), up marginally after announcing a new Model S battery option... Clovis (CLVS), up 4.5% after the FDA accepts the company's New Drug Application for Rucaparib for priority review... Wabash National (WNC), up 6.6% after being selected to join the S&P 600. LOWER: Express (EXPR), down 21.3% after reporting lower than expected second quarter results and giving guidance below consensus estimates... Skullcandy (SKUL), down 1.9% after terminating its merger agreement with Incipio and entering a new merger agreement with Mill Road Capital Management.