SoftBank Group Corp. has invested over $60 billion in OpenAI since 2025, marking a significant shift from diversified holdings to a concentrated focus on AI and related infrastructure [1, 2]. The company’s founder, Masayoshi Son, strongly supports OpenAI and CEO Sam Altman, viewing Altman as a key figure driving a major technology transformation this century [1, 2].
However, some SoftBank executives have expressed concern about the risks of placing such a large investment in a single company, warning that Son’s close alignment with Altman could cloud strategic judgment [1, 2]. These internal doubts come amid increasing competition in the AI sector. Recent breakthroughs by rival AI firm Anthropic have heightened market uncertainty about OpenAI’s ability to maintain its competitive edge [1, 2].
Reflecting these concerns, SoftBank’s stock price fell 6.01% to 5039 yen on Tuesday, signaling investor unease over the company’s AI exposure [2]. The decline underscored apprehension about SoftBank’s concentrated investment approach compared with its previous diversified strategy [2].
OpenAI itself is preparing for a potential initial public offering (IPO) as soon as 2026, an event that will test market appetite for the company and SoftBank’s stake [1, 2]. The upcoming public listing represents the next major milestone for both firms and will likely influence the future valuation of SoftBank’s AI assets.
SoftBank began its massive investment in OpenAI in 2025, escalating from initial funding rounds to the current multi-billion dollar commitment [1, 2]. The combination of internal debate and outside competition has placed added pressure on Son’s vision for AI led by OpenAI.
The immediate focus remains on OpenAI’s IPO plans and how financial markets will react to the offering once it launches. SoftBank’s approach to managing risk and return around this concentrated investment will be closely watched by shareholders and industry analysts alike [1, 2].
