Nvidia shares are popping on news it will acquire Softbank's Arm Holdings for $40 billion. The tech company has seen continued success amid the pandemic with the growth of gaming and work-from-home. Nikola shares are up after the electric truck company denied recent fraud allegations, though it did admit to faking a promotional video, and Immunomedics stock is also popping on news that Gilead will acquire the biopharmaceutical company for $21 billion.