Stocks Hitting 52-Week Lows

shares fell 13.25 percent to reach a new 52-week low of $11.72 after the company agreed to acquire Inventus Solutions for $232 million in cash.

shares fell 3.98 percent to reach a new 52-week low of $1.69. Acura Pharmaceuticals shares have dropped 25.11 percent over the past 52 weeks, while the S&P 500 index has gained 1.52 percent in the same period.

shares declined 6.23 percent to touch a new 52-week low of $19.42. Analysts at Longbow Research downgraded Kennametal from Neutral to Underperform.

shares touched a new 52-week low of $3.69. Chesapeake Energy reported preliminary results of its private offers.