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Nov 5, 2025 8:50 AM

SoftBank Shares Plummet Over 10% In Japan Amid Valuation Jitters — Arm Holdings, Samsung, SK Hynix Also Feel The Heat

Shares of SoftBank Group (OTC:SFTBY) fell by 10% in Japan on Wednesday, reflecting a broader decline in AI-related stocks amid growing valuation concerns.

The stock closed down at JPY 22,640 ($147.21), wiping off about $13 billion from CEO Masayoshi Son’s net worth, according to Forbes’ Real-Time Billionaires List.

Samsung, ARM Holdings Join Softbank’s Fall

SoftBank Group’s decline was part of a larger trend affecting AI-linked companies, with investors expressing apprehension about inflated valuations in the market’s most popular trade.

SoftBank Group holds a majority stake in the U.K.-based Arm Holdings (NASDAQ:ARM). The group also recently acquired Ampere Computing to bolster its AI data-center capabilities. In response to the market’s concerns, Arm ...