Gainers
Stamps.com Inc. (NASDAQ: STMP) jumped 63.7% to $323.63. Software investment firm Thoma Bravo inked an agreement to acquire e-commerce shipping solutions provider Stamps.com in an all-cash transaction valued at $6.6 billion.
Gainers
Cellect Biotechnology Ltd. (NASDAQ: APOP) shares jumped 68.5% to $5.51 after the company announced it filed a registration statement in connect with the proposed merger agreement with Quoin Pharmaceuticals.