Benzinga's Volume Movers

shares climbed 14.58% to $15.25. The volume of Calithera Biosciences shares traded was 2277% higher than normal. Calithera Biosciences obtained rights to develop and commercialize a portfolio of preclinical compounds aimed at treating cancer from TransTech Pharma.

surged 8.83% to $60.04. The volume of YY shares traded 769% higher than normal. YY reported upbeat Q4 earnings.

shares moved up 15.68% to $66.71. The volume of Life Time Fitness traded was 761% higher than normal. Life Time Fitness is in advanced talks to sell itself to private-equity groups, the Wall Street Journal reported.

shares rose 12.72% to $24.19. The volume of Celladon shares traded was 677% higher than normal. Celladon shares have jumped 86.61% over the past 52 weeks, while the S&P 500 index has gained 11.87% in the same period.