Morning Market Losers

Amarin Corporation plc

shares tumbled 20.44% to $1.44 following an update on ANCHOR trial SPA deal rescission appeal. Ku6 Media Co

fell 12.69% to $1.23 after the company reported a Q2 loss of $0.11 per share on revenue of $700.0 thousand. Ku6 Media said substantial doubt existed as to company's ability to continue as a going concern. Oxygen Biotherapeutics

shares dropped 7.06% to $3.77 after the company announced the halt of Oxycyte Phase 2b traumatic brain injury trial. Ruckus Wireless

declined 5.11% to $14.36. Buckingham Research downgraded Ruckus Wireless from Buy to Neutral and raised the price target from $15.00 to $16.00. Health Care REIT

shares dipped 3.34% to $64.27 after the company announced a proposed offering of 15.5 million shares of common stock. Achillion Pharmaceuticals

shares dropped 4.30% to $12.13 after rising 0.48% on Thursday. Randgold Resources

fell 1.58% to $75.44. Gold futures fell 0.10% to trade at $1,237.70 an ounce.