Masayoshi Son and SoftBank have made over $220 billion in profits from investing in ARM Odaily Planet Daily News: Driven by the strong demand for global AI computing power, chip architecture giant ARM's stock price surged 10% during today's trading session, reaching a historical high of $282.80 per share, and its total market value exceeded the $300 billion mark for the first time (reaching $300.9 billion). This historic milestone marks the arrival of the most lucrative "super myth" in the investment career of major shareholder SoftBank Group and founder Masayoshi Son. Public information shows that SoftBank Group currently holds the vast majority of ARM's shares, accounting for approximately 87%. Based on the estimated comprehensive book cost of approximately $40 billion formed through its "privatization acquisition in 2016" and "forced repurchase before IPO in 2023", this investment has made over $220 billion (approximately RMB 1.6 trillion) in just a few years, with a staggering book return rate of 550%.