Morning Market Losers

Sunesis Pharmaceuticals SNSS shares dipped 69.88% to $2.00 as pivotal Phase 3 VALOR trial of acute myeloid leukemia treatment did not meet primary endpoint. Alcobra ADHD shares declined 47.55% to $7.40 following the announcement of topline results from Phase III study of MDX in adult ADHD. Tekmira Pharmaceuticals TKMR shares dropped 11.07% to $26.26. Leerink Swann downgraded Tekmira Pharma from Outperform to Market Perform. EZchip Semiconductor EZCH shares fell 10.66% to $22.09 after the company lowered its Q3 sales forecast. BioCryst Pharmaceuticals BCRX dropped 9.92% to $11.53. H&R Block HRB shares slipped 5.12% to $30.04 as the company announced that the regulatory approval process for the company's deal with BofI Federal Bank won't be completed this year. Micron Technology MU shares fell 2.59% to $33.06 after rising 0.33% over the past week.