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FF
Founders Fund
San Francisco, California, U.S.Website ↗
Founders Fund is a San Francisco-based venture capital firm founded in 2005 that invests in companies building revolutionary technologies. It is recognized for its contrarian approach, often seeking opportunities in sectors overlooked by other investors, and has a history of backing transformative companies like SpaceX, Palantir, and Stripe.
Deep TechAI / MLHealthtechFintechSaaSConsumerCrypto / Web3ClimatePre SeedSeedSeries ASeries BSeries CGrowth
Last raised
May 2026
1 mo ago
Latest fund size
$6B
Founders Fund Growth Fund IV
AUM
$17B
estimated
Funds raised
Capital this firm has raised, newest first
Founders Fund Growth Fund IV
May 2026
$6B
Founders Fund Growth Fund III
Apr 2025
$4.6B
Eighth flagship fund and second growth fund
Jan 2022
$5B
Seventh flagship fund and first growth fund
Jan 2020
$3B
Sixth fund
Jan 2016
$1.3B
Fifth suite of funds
Jan 2014
$1B
Fourth fund
Jan 2011
$625M
Third fund
Jan 2010
$250M
Second fund
Jan 2007
$220M
First fund
Jan 2005
$50M
Recent investments
Companies this firm has funded, newest first
| Company | Round | Amount | Date | Source |
|---|---|---|---|---|
| STARK | — | — | Jun 2026 | |
| OpenAI | — | $8.3B | Aug 2025 | |
| Hadrian Automation | Series C | $260M | Jul 2025 | |
| PolymarketLead | — | $200M | Jun 2025 | |
| Trade RepublicLead | — | $1.3B | Jan 2025 | |
| NeticLead | Series B | $23M | Jan 2025 | |
| Layup PartsLead | — | — | May 2024 | |
| HextronicsLead | Seed | — | Jan 2024 |
Sources
Where this data came from