News SoftBank Stock Jumps 20% on AI Boom as Arm, Vision Fund Gain Traction by News Editor — Claire Donovan May 21, 2026 by News Editor — Claire Donovan May 21, 2026 SoftBank Group Corp. shares surged 20% in early trading on Thursday, May 21, 2026, as investors bet on the … 0 FacebookTwitterPinterestEmail