Benzinga's Top #PreMarket Gainers

KaloBios Pharmaceuticals Inc KBIO shares rose 21.92 percent to $22.25 in pre-market trading after jumping 75.48 percent on Friday. KaloBios Pharma named Martin Shkreli as CEO and announced a new financing. Tuniu Corp TOUR shares rose 8.08 percent to $16.98 in pre-market trading following announcement of a $500 million investment by the HNA Tourism Group. Mallinckrodt PLC MNK gained 7.38 percent to $65.50 in pre-market trading after the company reported better-than-expected results for its fiscal fourth quarter on Monday. Macy's, Inc. M shares surged 1.52 percent to $39.17 in pre-market trading after rising 0.12 percent on Friday. Mylan NV MYL shares climbed 0.52 percent to $52.14 in pre-market trading after gaining 1.27 percent on Friday.