EquitiesConglomerate's market cap tops automaker's for first time since 2000SoftBank's huge bet on ChatGPT developer OpenAI has lifted the price of its shares, pushing its market cap past that of Toyota. (Source photo by Kazuho Fujiwara) JADA NAGUMOJune 1, 2026 10:26 JSTTOKYO -- SoftBank Group shares are booming as the AI rally accelerates across global stock markets, pushing the tech conglomerate's market capitalization past Toyota Motor's for the first time in more than two decades.