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Aschenbrenner seeks Fluidstack investment at $40 billion valuation

Reported by Opalesque
Oct 29, 2026· 1 min read
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Key Takeaways
  • • Situational Awareness, the hedge fund run by Leopold Aschenbrenner, is seeking outside investors for a Fluidstack funding round that would value the AI infrastructure startup at $40 billion, according to Opalesque.
  • • The proposed $40bn valuation is more than five times the $7.5bn valuation of the January round that Situational Awareness led.
  • • The fundraising push follows the fund's prior lead role in Fluidstack's January financing, positioning the round as a significant markup for early backers.
Summary
Leopold Aschenbrenner's hedge fund, Situational Awareness, is looking for outside investors for a funding round in Fluidstack, an AI infrastructure startup, according to Opalesque. The round would value Fluidstack at $40 billion, more than five times the $7.5 billion valuation set in the January round that Situational Awareness led.

The pitch to outside investors comes as the fund seeks to bring additional capital into a company it previously anchored. The source article is truncated, so the full terms of the round, including the amount being raised and the identity of any co-investors, are not available in the material reviewed.

For institutional allocators, the transaction illustrates how valuations for AI infrastructure companies have moved in a short period, with a step-up of more than 5x between funding rounds. Investors evaluating exposure to the sector should note that the figure reflects a proposed valuation rather than a closed transaction.

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Sources

1 outlet

AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Opalesque Aschenbrenner seeks Fluidstack investment at $40 billion valuation