Morning Market Losers

AcelRx Pharmaceuticals (NASDAQ: ACRX) fell 33.33% to $7.22 after a blow from the FDA to Zalviso.Horizon Pharma (NASDAQ: HZNP) shares dipped 31.37% to $9.54 after the company reported that CVS Caremark (NYSE: CVS) and Express Scripts (NASDAQ: ESRX) expect to announce DUEXIS and VIMOVO will no longer be on formularies and will be placed on exclusion lists effective January 1, 2015.Ceragon Networks (NASDAQ: CRNT) fell 12.86% to $2.10 after the company reported Q2 results and announced a public offering of its ordinary shares.QAD (NASDAQ: QADB) dropped 7.89% to $15.06. QAD is expected to report FQ2 financial results on August 26, 2014.Armstrong World Industries (NYSE: AWI) shares declined 7.26% to $51.35 after the company reported weaker-than-expected Q2 results and lowered its FY14 forecast.The Dixie Group (NASDAQ: DXYN) shares dropped 6.09% to $8.33 after the company reported downbeat Q2 earnings.Sohu.com (NASDAQ: SOHU) shares fell 2.67% to $55.87 after the company posted a loss in the second quarter. The company posted a quarterly loss of $45 million, or $1.16 per share, versus a loss of $69 million in the earlier quarter. Non-GAAP net loss came in at US$0.88 loss per share.