Benzinga's Volume Movers

shares climbed 1.90 percent to $28.39. The volume of EMC shares traded was 721 percent higher than normal. Dell Inc agreed to buy EMC in a deal valued at around $67 billion. EMC reported Q3 preliminary EPS of $0.43 and revenue of $6.05 billion to $6.08 billion.

surged 6.21 percent to $19.89. The volume of Blue Buffalo Pet Products shares traded was 188 percent higher than normal. Morgan Stanley upgraded Blue Buffalo Pet Products from Equal-weight to Overweight, while maintaining a price target of $24.

shares moved up 5.17 percent to $26.25. The volume of Esperion Therapeutics traded was 180 percent higher than normal. Esperion Therapeutics shares surged following the discontinuation of Lilly's evacetrapib.

shares rose 6.83 percent to $18.47. The volume of SkyWest shares traded was 102 percent higher than normal. SkyWest shares have surged 144.55 percent over the past 52 weeks, while the S&P 500 index has gained 5.71 percent in the same period.