Morning Market Losers

Jacksonville Bancorp

dropped 32% to $0.95. Jacksonville Bancorp's trailing-twelve-month ROE is -136.83%. Sarepta Therapeutics

plummeted 14.25% to $33.65 on FDA guidance on its muscular dystrophy drug. Keynote Systems

dropped 13.37% to $11.27 after the company reported preliminary Q2 results. Magal Security Systems

dipped 12.45% to $4.29. Magal Security Systems shares have dropped 13.12% over the past 52 weeks, while the S&P 500 index has gained 13.35% in the same period.