SoftBank Vision Fund Books $46 Billion Gain on OpenAI Bet

CNBC reported Wednesday that SoftBank’s Vision Fund recorded a full-year investment gain of $46 billion. The surge was driven almost entirely by the Japanese conglomerate’s outsized position in OpenAI.

OpenAI Anchors the Vision Fund’s Surge

SoftBank has now deployed more than $30 billion into the ChatGPT maker. Investment gains from that single position reached $45 billion for the fiscal year ending March 2026. The final quarter alone delivered roughly $20 billion in Vision Fund gains. Nearly all of that came from OpenAI, as other portfolio holdings including Coupang and DiDi Global moved against the fund during that period.

SoftBank CEO Masayoshi Son has made OpenAI the cornerstone of the company’s artificial intelligence strategy. SoftBank has pledged a total commitment exceeding $60 billion to the startup, a figure that would hand it roughly a 13% ownership stake. In March, OpenAI closed a funding round co-led by SoftBank that placed the AI lab’s valuation at $852 billion.

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Background: A High-Conviction, High-Concentration Strategy

SoftBank’s Vision Fund launched in 2017 with ambitions to reshape global technology investing. The fund suffered painful writedowns during the 2022 tech downturn, including heavy losses on WeWork and other consumer tech bets. Son has since pivoted the fund sharply toward AI infrastructure and foundation-model companies, with OpenAI CEO Sam Altman becoming a frequent collaborator on high-profile investment announcements.

To fund the OpenAI commitment, SoftBank has been trimming positions elsewhere. The company sold down stakes in T-Mobile and Nvidia, generating approximately 218 billion yen in proceeds from those disposals over the fiscal year.

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Credit Warning Shadows the Headline Numbers

The concentration risk has not gone unnoticed by ratings agencies. S&P Global Ratings revised its outlook on SoftBank from stable to negative in March, warning that the firm’s financial capacity and portfolio liquidity were likely to weaken under the weight of its OpenAI commitment. S&P flagged asset sales as a potential path to limiting the damage.

SoftBank posted a net profit of 5 trillion yen for the full fiscal year at the group level. Telecommunications operations contributed alongside the Vision Fund. Excluding the fund and stripping out currency effects and asset-sale proceeds, however, the underlying investment unit outside the fund recorded a loss of roughly 472 billion yen, underscoring how heavily the headline result depends on OpenAI’s continued ascent.

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