SoftBank's OpenAI Bet Sparks Liquidity Concerns

SoftBank's significant investment in OpenAI and rising debt are raising concerns about a potential liquidity crunch. Shares of the Japanese technology investment giant have surged about 70% this year, pushing SoftBank to become Japan's most valuable company. This rally is driven by investor enthusiasm for AI and expectations for a blockbuster OpenAI IPO. What's interesting is that SoftBank participated in OpenAI's funding round last year at a reported $300 billion valuation. They also secured a $40 billion bridge loan to fund additional OpenAI investments and for general corporate purposes. SoftBank had about 16.3 trillion yen, or about $104 billion, in stand-alone interest-bearing debt as of the end of 2025. S&P Global estimates OpenAI will account for roughly 30% of SoftBank's investment portfolio, on par with Arm Holdings. S&P Global Ratings revised SoftBank's credit outlook to negative in March. They cited concerns that the company's asset liquidity and portfolio quality are likely to deteriorate due to its additional huge investment in OpenAI. The bottom line is that if OpenAI fails to deliver, or if AI valuations cool, this could create significant pressure on SoftBank.