The company’s stock is up $41.10, or 31.18 percent, to $172.88 per share in trading midday Monday. Prior to the Thoma Bravo acquisition announcement, Proofpoint’s stock had never traded above ...

Thoma Bravo’s strategy consists of spending billions to buy security firms and taking the companies private. Darktrace’s stock jumped 24 percent on Monday, starting the day at around $5.01 per ...