Asian shares are mixed and OpenAI investor SoftBank shares plunge after calls to slow AI industry

Asian shares are mixed and U.S. futures have edged lower. Oil prices have gained more than 3%, as worries grow over global oil supplies after Saudi Arabia shuts down a major oil pipeline used to help bypass the Strait of Hormuz. Brent crude, the international standard, was trading at near $108 a barrel. Japan-traded shares of SoftBank Group, a key…