Peter Thiel’s Founders Fund is nearing the close of its fourth growth fund, Founders Fund Growth IV, with $6 billion in capital commitments, marking a significant expansion less than a year after closing its third growth fund at $4.6 billion. “Demand from outside investors exceeds the fund’s capacity,” with approximately $1.5 billion of the capital coming from the Founders Fund’s partners themselves.
The $4.6 billion vehicle was intended primarily for follow-on investments in successful late-stage companies, demonstrating the firm’s commitment to supporting its portfolio through multiple funding rounds. The 21-year-old firm has built an impressive portfolio of winning startups, including early investments in AI cloud computing company Crusoe, workforce management platform Rippling, and fintechs Stripe and Ramp.
Founders Fund was the first institutional investor in data analytics giant Palantir Technologies and maintains stakes in numerous defense tech companies such as SpaceX, Flock Safety, and Anduril, which partner Trae Stephens co-founded and the firm backed from its first seed round. Anduril is currently reported to be raising a massive $4 billion round at a $60 billion valuation.
The San Francisco-based firm’s growth-stage capital ambitions extend beyond its existing portfolio. Last month, Founders Fund made its first direct investment in Anthropic, co-leading along with D. E. Shaw Ventures, Dragoneer, ICONIQ, and MGX a $30 billion investment into the AI company at a $380 billion post-money valuation. This investment positions Founders Fund as one of the few firms with significant stakes in both leading AI labs, as it is also an investor in OpenAI.
Despite aggressively raising growth capital, the firm has not raised a new early-stage fund since early 2022, when it announced its eighth early-stage fund with $1.8 billion in capital commitments. In 2023, the firm cut that fund in half to $900 million in response to worsening conditions, reallocating the remaining $900 million into a separate early-stage fund that officially launched in October 2025.
Reference
Temkin, M. (2026, March 9). Founders Fund nears $6B close for latest growth fund, sources say. TechCrunch. https://techcrunch.com/2026/03/09/founders-fund-nears-6-billion-close-for-latest-growth-fund-sources-say/