Morning Market Losers

Athersys, Inc. (NASDAQ: ATHX) shares slipped 51.51 percent to $1.06 after the company reported results from Phase 2 study of MultiStem cell therapy for the treatment of ischemic stroke. Professional Diversity Network Inc (NASDAQ: IPDN) shares dipped 31.19 percent to $3.00 after the company priced 1,670,000 shares of its common stock at $3.00 per share. PROS Holdings, Inc. (NYSE: PRO) shares fell 20.92 percent to $21.47 after the company lowered its Q1 guidance. Discovery Laboratories, Inc. (NASDAQ: DSCO) tumbled 15.22 percent to $1.17. Discovery Laboratories closed enrollment of AEROSURF Phase 2a clinical trial and announced its plans to cut headcount by 50%. Advanced Micro Devices, Inc. (NASDAQ: AMD) shares dropped 12.20 percent to $2.52 after the company reported downbeat results for the first quarter. ServiceNow Inc (NYSE: NOW) shares slipped 11.72 percent to $73.13. ServiceNow reported upbeat earnings for the first quarter, but issued a weak Q2 revenue forecast. Streamline Health Solutions Inc. (NASDAQ: STRM) shares fell 9.61 percent to $2.54. The Atlanta, Georgia-based company reported a quarterly net loss of $4.8 million, or $0.28 per share, versus a year-ago loss of $1.9 million, or $0.14 per share. American Express Company (NYSE: AXP) shares slipped 4.99 percent to $76.87 after the company reported better-than-expected earnings for the first quarter, while the company's sales missed analysts' estimates. Akebia Therapeutics Inc (NASDAQ: AKBA) shares fell 3 percent to $73.13 after the company priced 7,272,727 shares at $8.25 per share.