Morning Market Movers

KKR Financial Holdings LLC KFN jumped 24.18% to $11.73 after the company agreed to be acquired by KKR & Co KKR for $2.6 billion. iRobot IRBT rose 16.82% to $36.56 after Raymond James upgraded the stock from Market Perform to Strong Buy. Rick's Cabaret International RICK moved up 14.70% to $12.33 after the company reported better-than-expected fourth-quarter earnings. On Track Innovations OTIV shares jumped 12.79% to $3.35 after OTI Africa and Wayne signed a global supply agreement for OTI's EasyFuel Plus Automatic Vehicle Identification components.