Stocks Hitting 52-Week Lows

shares fell 37.10 percent to reach a new 52-week low of $16.73. Endo reported upbeat quarterly earnings, but lowered its full-year guidance. RBC Capital downgraded Endo from Outperform to Sector Perform.

shares fell 10.78 percent to touch a new 52-week low of $3.56. Ability shares have tumbled 61.83 percent over the past 52 weeks, while the S&P 500 index has dropped 3.09 percent in the same period.

shares touched a new 52-week low of $2.10. Marin Software reported a Q1 loss of $0.01 per share on revenue of $27.2 million. The company also issued a weak revenue forecast for the current quarter.

shares dropped 12.80 percent to touch a new 52-week low of $16.48. Mirati Therapeutics reported a Q1 loss of $1.13 per share.