Benzinga's Volume Movers

shares climbed 9.55 percent to $63.08. The volume of Thoratec shares traded was 1246 percent higher than normal. Thoratec agreed to be acquired by

for $3.4 billion.

surged 2.77 percent to $28.54. The volume of Dynavax Technologies shares traded 569 percent higher than normal. Dynavax Technologies priced its public offering of 4,545,455 shares at $27.50 per share.

shares moved up 7.75 percent to $725.20. The volume of Chipotle Mexican Grill traded was 518 percent higher than normal. Chipotle posted quarterly net income of $140.2 million, or $4.45 per share, versus $110.3 million, or $3.50 per share, in the year-ago quarter. Its revenue rose 14.1 percent year-over-year to $1.2 billion.

shares rose 10.48 percent to $558.02. The volume of Intuitive Surgical shares traded was 245 percent higher than normal. Intuitive Surgical reported upbeat Q2 results.