Founders Fund is a San Francisco-based venture capital firm founded in 2005 by Peter Thiel, Ken Howery, and Luke Nosek – all early PayPal executives. The firm built its reputation by making large, concentrated bets on frontier technology at a time when most Silicon Valley VCs favored incremental consumer internet plays. Its founding thesis: science and engineering-driven companies, not ad-tech or social networks, would generate the most durable returns.
The firm has raised multiple funds totaling an estimated $11 billion in assets under management across its lifetime. Fund VIII, closed in 2022, reportedly raised approximately $900 million. Founders Fund does not widely publicize fund sizes or LP details, so precise AUM figures are based on media estimates rather than filings. Its investment stage spans seed through late-stage growth, with a preference for companies that address large, technically difficult problems in defense, biotech, aerospace, and financial infrastructure.
Geographic focus is primarily the United States, though the firm has backed companies with global operations. It does not maintain offices outside San Francisco.
Notable investments
- SpaceX – One of the firm's most celebrated bets. Founders Fund invested in SpaceX when reusable rocketry was widely dismissed. The company's valuation has exceeded $200 billion.
- Palantir Technologies – Co-founded by Thiel and backed early. Now a publicly traded data analytics firm (NYSE: PLTR) serving governments and enterprises.
- Stripe – Early investor in the payments infrastructure company, now one of the most valuable private fintech firms globally.
- Anduril Industries – Defense technology company founded by Palmer Luckey. Founders Fund backed it early, aligning with the firm's increasing focus on national security tech.
- Airbnb – Early-stage backer before the home-sharing platform became a household name and went public in 2020.
- Nubank – Brazilian digital bank, representing one of the firm's few bets outside North America.
- Stemcentrx – Cancer biotech acquired by AbbVie for $5.8 billion in 2016, one of the firm's largest disclosed exits.
- Filecoin / Protocol Labs – Crypto-native bet on decentralized storage infrastructure, marking the firm's direct engagement with blockchain-based networks.
Founders Fund also held Bitcoin positions early – Peter Thiel has publicly discussed Bitcoin as a potential reserve asset and store of value, and the firm has participated in token sales and crypto-adjacent infrastructure rounds.
Team
Peter Thiel is the firm's most prominent figure. He co-founded PayPal, made the first outside investment in Facebook, and authored Zero to One, a widely read book on startup strategy. Ken Howery co-founded the firm and later served as U.S. Ambassador to Sweden (2019–2021) before returning to private investing. Luke Nosek, another PayPal alum, focuses on deep tech and biotech. Partners Brian Singerman and Napoleon Ta lead many of the firm's active deals. Keith Rabois, formerly associated with the firm, departed to focus on his own vehicle, Founders Fund–adjacent but independent.
Recent activity
In 2024 and into 2025, Founders Fund increased its exposure to defense technology and artificial intelligence infrastructure. The firm doubled down on Anduril as it competed for major U.S. Department of Defense contracts. It also participated in funding rounds for AI companies building at the infrastructure layer. On the crypto side, the firm remained active in the Bitcoin narrative – Thiel has been a vocal advocate at conferences, and the firm reportedly maintained significant BTC holdings on its balance sheet through the 2022–2023 bear market.
Public information on specific deal sizes post-2023 is limited, as Founders Fund does not issue press releases for most investments and does not file standard LP disclosures. Verification through Crunchbase and SEC EDGAR Form D filings provides the most reliable public record of fund activity.
Founders Fund occupies an unusual position in venture: explicitly contrarian, willing to hold illiquid positions for a decade or more, and comfortable backing founders whose ideas face institutional skepticism. Its hit rate on large outcomes is high, though it has also backed companies that failed quietly. The firm's concentrated approach means individual fund performance depends heavily on one or two breakout companies per vintage – a structure that rewards patience and punishes imitation.
