Morning Market Losers

Envision Healthcare Holdings Inc EVHC shares tumbled 33.18 percent to $24.39 after the company reported weaker-than-expected Q3 results and lowered its FY15 earnings outlook Relypsa Inc RLYP shares dipped 31.58 percent to $11.05 following Wednesday's FDA approval of the company's treatment for Hyperkalemia. Community Health Systems CYH shares fell 29.79 percent to $28.47 after the company reported weak Q3 operating results. Arctic Cat Inc ACAT dropped 21.06 percent to $17.65 on downbeat Q2 results. Tenet Healthcare Corp THC shares slipped 17.81 percent to $28.61 after falling 4.47 percent on Wednesday. Mizuho Securities downgraded Tenet Healthcare from Buy to Neutral and lowered the price target from $68.00 to $30.00. Adeptus Health Inc ADPT fell 14.51 percent to $73.18. Adeptus Health reported Q3 earnings of $0.31 per share on revenue of $88.2 million. Cabelas Inc CAB shares dropped 13.68 percent to $35.97 on weaker-than-expected Q3 results. MKS Instruments, Inc. MKSI shares declined 9.97 percent to $31.71 after the company issued a weak Q4 forecast. American Express Company AXP shares slipped 5.84 percent to $72.04 after the company reported weaker-than-expected earnings for the third quarter. Horizon Pharma PLC HZNP shares dropped 4.72 percent to $14.13 after the company reported the US PTO issuance of added notice of allowance with claims covering PENNSAID 2%.