Investment Thesis
Masayoshi Son believes AI will create a superintelligent future and has bet SoftBank existence on this thesis. The Vision Fund 1 ($100B) and subsequent investments represent the largest single pool of capital ever dedicated to technology investing. Son has stated he wants SoftBank to be remembered as the company that funded the AI revolution.
Notable AI Deals
SoftBank led OpenAI $40B round in March 2025, the largest private investment round in history. They own Arm Holdings (the chip architecture powering most AI edge devices). Previous Vision Fund bets include ByteDance, Coupang, and dozens of AI-adjacent companies. The OpenAI deal makes SoftBank the single largest AI investor.
Portfolio Strategy
Son deploys capital at unprecedented scale, typically leading rounds of $1B+ in companies he personally meets with. His strategy is concentrated and conviction-driven: when he believes in a company, he invests at a scale that no other single investor can match. This has produced both spectacular wins and catastrophic losses.
Track Record
Arm IPO ($65B+ market cap) validated the semiconductor architecture bet. The OpenAI investment positions SoftBank at the center of the AI revolution. However, Vision Fund 1 also lost billions on WeWork and other bets, making SoftBank track record highly variable. Son has gone all-in on AI as the path to redemption.
| Company | Amount | Date | Stage |
|---|---|---|---|
| OpenAI | $40B | 2025-03 | Growth |
| Arm Holdings | $32B | 2016-07 | Acquisition |
| Figure AI | $675M | 2024-02 | Series B |