Benzinga's Volume Movers

shares rose 85.20 percent to $18.15. The volume of Axiall shares traded was 1031 percent higher than normal.

proposed to acquire Axiall for $20.00 per share in cash and stock. However, Axiall rejected the offer from Westlake.

surged 0.58 percent to $88.99. The volume of Molson Coors Brewing shares traded was 815 percent higher than normal. Molson Coors Brewing priced its public offering of 27,167,630 shares of its Class B common stock at $86.50 per share.

shares moved up 19.09 percent to $74.48. The volume of Coherent traded was 804 percent higher than normal. Coherent reported stronger-than-expected earnings for its first quarter.

shares climbed 19.64 percent to $26.44. The volume of Gigamon shares traded was 482 percent higher than normal. Gigamon reported better-than-expected results for its fourth quarter.