Industry AI Minute Newsroom 2026-08-10

Two weeks after selling most of its public portfolio, Aschenbrenner's fund put $400 million into a chip startup almost nobody has heard of

Situational Awareness, the AI-focused hedge fund founded in 2024 by the former OpenAI researcher Leopold Aschenbrenner, has invested a further $400 million in Source Foundry, taking its total stake in the startup to $500 million and valuing the company at about $5 billion. Source Foundry, founded by the Stanford alumni Abdulmalik Obaid and Joe Burg, does not make chips. It works upstream of the fab, on the tooling and manufacturing processes that produce semiconductors, with the aim of making that step faster and cheaper — which is why coverage has framed it as taking aim at ASML's position rather than at TSMC's. The timing is what makes this notable. Aschenbrenner started the fund in his mid-twenties with no trading experience, posted strong early returns, and was then caught by the decline in AI infrastructure stocks. At the end of July the fund sold most of its public portfolio to Ken Griffin's Citadel, keeping its Anthropic shares; assets under management are reported to have fallen from roughly $20 billion to $10 billion. Having halved, it has now committed a large private cheque to a company whose product almost nobody outside the industry can evaluate.

Why it mattersThe public market decided this summer that AI infrastructure had been overpriced, and it took Aschenbrenner's fund down by half in the process. What he did next is the interesting part: he did not retreat from the thesis, he moved it out of reach of the market's opinion, from liquid public positions into an illiquid private one that will not be marked against him weekly. Whether that is conviction or an escape from the scoreboard depends on Source Foundry actually working, and there is no way for an outsider to check. The substance underneath is worth noting separately. If the bet is right, the constraint on AI is no longer chip design and no longer even fab capacity, but the machines and processes that build the fabs — the narrowest and least contested chokepoint in the entire supply chain, and one currently occupied by a single Dutch company. That is a long way from where the money was going a year ago.

✓ Verified · 3 sources

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Two weeks after selling most of its public portfolio, Aschenbrenner's fund put $400 million into a chip startup almost nobody has heard of

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