More than 82 million FireEye shares can be traded for the first time on Wednesday without restrictions put in place after the company's secondary stock offering earlier this year.
The stock was up 9.78% to $31.76 at 12:21 p.m.
The cyber outfit launches Helix, a new platform that integrates security apps and devices
Weak sales growth, large cash balances and still-favorable credit markets have enterprise giants willing to open up their checkbooks. An offshore cash tax deal could provide a fresh incentive.
Analysts largely think the sell-off in shares of the cybersecurity provider following the company's fiscal 2017 first quarter report has been overdone.
Here are Tuesday's top research calls, including downgrades for CF Industries, Duke Energy and FireEye, and an upgrade for Arista Networks.