Masayoshi Son’s Net Worth Down $13 Billion As SoftBank Shares Slide—Loses Asia’s Richest Title To Ambani

BreakingBusinessMasayoshi Son’s Net Worth Down $13 Billion As SoftBank Shares Slide—Loses Asia’s Richest Title To AmbaniByTy Roush,Forbes Staff. Ty Roush is a breaking news reporter based in New York City.Follow AuthorJun 04, 2026, 09:23am EDTToplineMasayoshi Son’s net worth plunged by more than $13 billion as shares of his SoftBank tumbled amid a broader tech sell-off on Thursday, ceding his title as the richest person in Asia to Mukesh Ambani.The Japanese investment giant recently surpassed Toyota as Japan's largest firm.Getty ImagesKey FactsShares of SoftBank dropped by more than 11% in Tokyo-listed trading following an after-hours sell-off in the U.S, where the Japanese investment giant—not listed on major exchanges like the Nasdaq or New York Stock Exchange—is traded over the counter.This is a developing story.Got a tip? Share confidential information with Forbes.Editorial StandardsReprints & PermissionsLOADING VIDEO PLAYER...FORBES’ FEATURED Video