This story is part of Forbes’ coverage of Japan’s Richest 2026. See the full list here.

After a four year gap, billionaire Masayoshi Son reclaims the title of Japan’s richest person as his SoftBank Group’s shares more than tripled, boosting his net worth to a record $80 billion. That’s an 80% jump from the previous peak in his wealth of $44.4 billion in 2021. Stoking investor frenzy are the tech mogul’s massive bets on AI as he pursues what he calls an “artificial superintelligence strategy.” For the year to Mar. 31, SoftBank reported a more than fourfold rise in net profit to an all-time high of ¥5 trillion yen ($31 billion) on revenue of ¥7.8 trillion.