SoftBank’s Shares Hit a Record in Win for Masayoshi Son

  • Son’s won and lost billions of dollars on SoftBank volatility
  • Billionaire’s rhetoric has soared in tandem with share rise

SoftBank Group Corp.’s stock rose 1.5% to a new lifetime high on Wednesday, a vote of confidence in Masayoshi Son’s ambitions to ramp up investments in AI and semiconductors.

The Japanese tech investor is gaining investor attention as its telecom arm moves aggressively to invest in generative AI, tying up with Microsoft Corp. and startup Perplexity AI Inc. and building data centers stocked with Nvidia Corp. accelerators. Its chip unit Arm Holdings Plc is also trying to position its architecture as a means to conserve energy in devices running artificial intelligence.