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