Morning Market Losers

Raptor Pharmaceutical Corp. RPTP shares declined 28.97 percent to $8.55 following news that Phase 2b CyNCh trial did not meet primary endpoint. Timkensteel Corp TMST shares dropped 13.53 percent to $13.49 after the company issued an updated forecast for the third quarter. Cowen & Company downgraded Timkensteel from Outperform to Market Perform. Shake Shack Inc SHAK shares declined 8.51 percent to $50.45. Mattress Firm Holding Corp MFRM shares dropped 3.76 percent to $44.50. Analysts at Bank of America downgraded Mattress Firm from Buy to Neutral and lowered the target price from $75 to $55. Randgold Resources Ltd. (ADR) GOLD shares slipped 3.90 percent to $55.59. Analysts at JP Morgan downgraded Randgold Resources from Overweight to Neutral. Yahoo! Inc. YHOO shares dropped 2.90 percent to $30.52 after rising 0.90 percent on Friday. Netflix, Inc. NFLX shares slipped 1.43 percent to $96.12 after declining 1.98 percent on Friday.