Aschenbrenner's Hedge Fund Doubles Down on Chip Startup After Losses

Situational Awareness has poured another $400 million into Source Foundry, a Stanford-founded chip manufacturing startup, bringing its total stake in the company to $500 million. The bet comes as the hedge fund itself is bleeding assets.

Founded in 2024 by Leopold Aschenbrenner, a former OpenAI researcher who had never traded professionally before launching the fund, Situational Awareness built its reputation on aggressive, conviction-driven wagers on AI infrastructure. That conviction has cut both ways.

Assets under management at the fund have fallen from $20 billion to $10 billion, a decline tied to a broader pullback in AI infrastructure stocks after a period of strong early gains. At the end of July 2026, the fund sold off the bulk of its public equity holdings, a retreat that landed it in the headlines as an "embattled" player rather than the AI-trading prodigy narrative that once surrounded Aschenbrenner.

Notably, the fund did not liquidate everything. It kept its shares in Anthropic even as it shed most of its other public positions, a signal that Aschenbrenner still sees long-term value in at least one of his core AI bets despite the broader retrenchment.

Why Source Foundry, and why now

Source Foundry is pitching itself as a way to make chip production faster and cheaper, a proposition that speaks directly to the compute bottleneck constraining AI scaling. For a fund built on the thesis that AI progress hinges on hardware capacity, backing a manufacturing startup rather than another model developer is a logical, if risky, extension of that worldview.

Doubling an already large private stake while public assets shrink is an unusual sequence. It suggests Situational Awareness is treating the chip supply chain as a higher-conviction, longer-horizon bet than the public AI infrastructure trades that recently soured, even as its overall balance sheet has been cut in half.

The timing invites scrutiny. A fund now managing $10 billion, half of what it had months ago, is committing another nine figures to an illiquid, early-stage private company rather than shoring up its public book. Whether that reflects genuine insight into Source Foundry's manufacturing approach or a fund leaning further into concentrated risk after a rough stretch will likely become clearer as chip supply dynamics play out over the coming year.