SoftBank Group's shares reached a record high, driven by its tech investment arm's recovery, boosted by successes like British chip designer Arm, and founder Masayoshi Son's focus on artificial intelligence. Despite past setbacks during market downturns, the company's shares hit 11,190.00 Japanese yen, marking a significant turnaround. Son's Vision Fund investments faced challenges, including losses and failed bets like WeWork, but recent AI and semiconductor initiatives have contributed to the stock's climb. This surge reflects growing investor confidence in SoftBank's strategic shift towards AI and chip investments, elevating Son's net worth and reaffirming the company's position in the tech investment landscape.