Stocks Hitting 52-Week Lows

shares fell 32.42 percent to touch a new 52-week low of $8.42. Cardiovascular Systems reported a Q2 loss of $0.47 per share on revenue of $41.4 million. Needham downgraded Cardiovascular Systems to Underperform.

shares touched a new 52-week low of $56.348. American Express reported upbeat earnings for its fourth quarter. Chairman and CEO Kenneth I. Chenault indicated he plans to cut at least $1 billion from the company's cost base by "moving aggressively to streamline the company and drive efficiencies."

shares reached a new 52-week low of $29.86. Legg Mason reported Q3 adjusted earnings of $1.45 per share and announced the acquisition of Clarion Partners.

shares touched a new 52-week low of $20.80. Citizens Financial reported Q4 adjusted earnings of $0.42 per share.