Capital · out
personal: Hydrazine Capital ($21M fund, 2012) and portfolio stakes (Reddit, Stripe, Helion, Retro Biosciences $180M, Worldcoin, Airbnb, Instacart); stepped down as Oklo chairman (Apr-2025) rather than a capital outflow.
Sourced figures 1
- Wikipedia — Sam Altman co-founded Hydrazine Capital ($21M fund, 2012), deployed ~75% into Y Combinator companies
the working
Threads 1
A claim is one metric we assert about a node — the value is the summary, this page is the receipt. Sourced from kestrel; supersedes-history not yet shown. Back to Sam Altman.