TL;DR
Court documents from the Musk v. Altman trial revealed that the University of Michigan invested 20 million dollars in OpenAI before ChatGPT existed. The stake is now worth two billion dollars.
The University of Michigan invested 20 million dollars in OpenAI before ChatGPT existed, before Microsoft committed billions, and before the company was worth more than some countries. Court documents from the Musk v. Altman trial revealed this week that the stake carries a target redemption value of two billion dollars. A university endowment made a hundred-to-one return on an artificial intelligence company that was, at the time of investment, a nonprofit research laboratory with no commercial product.
The investment appeared in an exhibit filed in the federal trial in Oakland, California, where Elon Musk is suing OpenAI and its leadership for 150 billion dollars, alleging that the company’s conversion from nonprofit to for-profit corporation constituted theft from a charity. The document listing early investors was not the focus of the trial. But the line item, 20 million dollars from the University of Michigan, has become the most consequential revelation for anyone interested in who saw the AI revolution coming and who actually wrote a cheque.
The bet
Michigan’s investment arrived in one of OpenAI’s earliest fundraising rounds, alongside Khosla Ventures at 50 million dollars, Reid Hoffman’s Aphorism Foundation at 50 million, a Y Combinator fund at 10 million, and the trust of Google’s Paul Buchheit at three million. The round predated Microsoft’s initial one billion dollar investment in 2019 and the public release of ChatGPT in November 2022. At the time, OpenAI was a nonprofit whose mission was to ensure that artificial general intelligence benefits all of humanity. It had no revenue model, no consumer product, and no path to a public listing.
University endowments invest in venture capital and early-stage companies as part of their alternative asset allocation, typically committing capital through fund-of-funds structures or direct investments managed by the endowment’s chief investment officer. Michigan’s endowment, which totalled approximately 17.9 billion dollars at the end of fiscal 2025, has been more aggressive than most in its AI allocation. The 20 million dollar commitment to OpenAI was not a rounding error in a portfolio of that size. But it was a bet on a nonprofit research lab at a time when the commercial potential of large language models was understood by almost nobody outside the organisations building them.
The relationship
The OpenAI investment was not Michigan’s only connection to Sam Altman. In 2023, the university committed 75 million dollars to Hydrazine Capital, a venture fund led by Altman. By 2024, Michigan had increased that commitment to 180 million dollars. The Hydrazine investments are separate from the OpenAI stake, distinct vehicles with different structures and return profiles. But the combined exposure, 200 million dollars across a direct investment and a venture fund both connected to the same individual, represents an unusual concentration of a university endowment’s capital in one network.
The Michigan Daily, the university’s student newspaper, reported in 2024 that the endowment had increased its allocation to AI and cryptocurrency investments, generating returns that outperformed the broader market. An opinion column in the same publication argued that the university should scale back its AI investments, citing ethical concerns about the technology the endowment was profiting from.
Musk called himself “a fool” on the stand for funding OpenAI, a characterisation that applies to his own contributions of approximately 50 million dollars to the same nonprofit that Michigan invested in. The difference is that Musk’s contributions were donations to a nonprofit. Michigan’s investment, through the for-profit conversion, became equity in a company now valued at 852 billion dollars.
The conversion
OpenAI’s transformation from nonprofit to for-profit is the mechanism that turned Michigan’s 20 million dollar investment into a two billion dollar stake. In October 2025, OpenAI restructured into OpenAI Group PBC, a public benefit corporation. The OpenAI Foundation retained a 26 per cent stake. Microsoft held 27 per cent. Early investors, including Michigan, saw their positions converted into equity in an entity that could pursue a public listing.
Brockman’s own journals, introduced at trial, described the nonprofit mission as “a lie,” language that Musk’s legal team used to argue that the conversion was premeditated. The conversion is the central issue in the trial. For Michigan’s endowment, it is the event that crystallised the return. Without the for-profit conversion, the 20 million dollar investment would have remained a contribution to a nonprofit with no liquidity path.
OpenAI closed a 122 billion dollar funding round in March 2026 at a post-money valuation of 852 billion dollars. The round included commitments from SoftBank, Andreessen Horowitz, Amazon, and Nvidia. An IPO is anticipated, with internal targets discussed for a filing in the second half of 2026 and a listing that could value the company at one trillion dollars. If Michigan holds its position through a public offering at that valuation, the return would exceed a hundred to one.
The pattern
Stanford’s James Zou is targeting a one billion dollar valuation for an AI physiology startup backed by research published in Nature, one example of a university-to-company pipeline that has produced some of the most valuable AI companies. Google emerged from Stanford. OpenAI’s founding team included researchers from Berkeley and Stanford. The university endowments that invested earliest in these networks have generated returns that dwarf their conventional portfolios.
Michigan’s 20 million dollar investment is exceptional in magnitude but not in kind. University endowments have been allocating to venture capital for decades. Yale’s endowment, under the late David Swensen, pioneered the model of heavy alternative asset allocation that most large endowments now follow. What distinguishes Michigan’s OpenAI bet is not the strategy but the timing and the target. The endowment committed capital to an AI nonprofit before the technology had demonstrated commercial viability, before the industry had attracted mainstream venture capital at scale, and before the word “ChatGPT” existed in any language.
The AI industry’s trajectory in 2025 confirmed what Michigan’s investment office apparently understood years earlier: that large language models would become the most valuable technology platform since the smartphone. The 20 million dollars is now worth two billion. The university that wrote the cheque will have to decide, when OpenAI eventually goes public, whether to take the return or hold the position in a company that is losing 14 billion dollars a year while generating 25 billion in annualised revenue. The bet was prescient. The exit will determine whether it was also wise.
