SoftBank Shares Climb Again With Arm’s Explosive AI Rally (1)

SoftBank Group Corp. shares surged for a third day on the explosive rally of its Arm Holdings Plc., the chip designer that has almost doubled in value since making the case last week for how it will benefit from the artificial intelligence boom.

SoftBank’s stock climbed as much as 11% on Tuesday, to the highest level since May of 2021. SoftBank held onto a stake of about 90% in Arm as it took the company public last year.

Arm’s shares rose 29% on Monday, pushing its gains to more than 90% since it reported financial results on Feb. 7. ...