Click to view a price quote on TWTR. : Stocks rebounded Friday from the previous session's broad losses that were fueled by worries global growth could be stalled by the spread of COVID-19 variants. Shares of Stamps.com  (STMP) - Get Report jumped after the shipping-solutions specialist agreed to be acquired by software-focused private-equity firm Thoma Bravo for $6.6 billion cash. The PE firm will pay $330 cash for each Stamps.com share, a 67% premium over Thursday's closing price of $197.72.