# Founders Fund [[Peter Thiel]]'s venture capital firm and the **primary funding engine for the defense tech ecosystem**. Founded 2005. ~$17B AUM (2025, up from ~$12B in 2023). Latest fund: $4.6B growth equity vehicle closed April 2025. Portfolio of **555–644 companies** (per Tracxn/VCBacked), including 49 unicorns, 28 IPOs, and 124 acquisitions. Founders Fund is not a conventional VC. It is the capital infrastructure through which PayPal Mafia wealth is converted into defense technology companies, government contracts, and political power. The Anduril founding story literally started at a Founders Fund retreat. The firm's willingness to back weapons, surveillance, and sectors other VCs avoid gives it outsized influence in shaping what the U.S. military buys. ## Fund History | Fund | Year | Size | Notes | |------|------|------|-------| | Fund I | 2005 | $50M | First fund | | Fund II | 2007 | $220M | | | Fund III | 2009 | $275M | Early SpaceX, Palantir | | Fund IV | 2011 | $625M | Facebook IPO era | | Fund V | 2014 | $1.4B | Trae Stephens joins | | Fund VI | 2016 | $1.3B | Anduril incubation | | Fund VII | 2020 | $1.5B | Defense tech acceleration | | Fund VIII | 2022 | $1.8B | Post-Ukraine defense boom | | Growth Fund | 2025 | $4.6B | Largest ever; growth equity | ## Key People - **[[Peter Thiel]]** — Co-founder, ideological center of gravity. Manages the political network that converts fund investments into government relationships. - **[[Trae Stephens]]** — Partner since 2014. Joined Palantir in 2008, then co-founded [[Anduril]] while at Founders Fund — the most successful VC-to-defense-company incubation in history. - **[[Keith Rabois]]** — Partner (2019–2024), [[PayPal Mafia]] member, Republican donor and Vance fundraiser host. Now at [[Khosla Ventures]]. - **[[Ken Howery]]** — Co-founder. Now U.S. Ambassador to Denmark (2025–), with the Greenland portfolio — a direct conversion of VC co-founder status into diplomatic posting. - **[[Luke Nosek]]** — Co-founder. PayPal co-founder. Now at [[Gigafund]] (focused on SpaceX secondaries). - **Brian Singerman** — Partner. Led Stemcentrx ($1.7B return) and major biotech investments. - **Napoleon Ta** — Partner. Defense tech portfolio lead. ## The Portfolio: A Complete Public Catalog Founders Fund has invested in 555–644 companies. The following documents every publicly identifiable investment, organized by the sector categories that matter for the KB. This is the most comprehensive public compilation available — full data requires PitchBook or Crunchbase Pro access. --- ### Defense & Government Technology The core of the Founders Fund story for the KB. Roughly a third of the fund's publicly prominent investments are defense or government-adjacent. | Company | What It Does | Investment | Status | KB Entry | |---------|-------------|------------|--------|----------| | **[[Anduril]]** | Autonomous weapons, drones, surveillance towers, Lattice OS | **$1B+** (led $2.5B Series G at $30.5B; co-leading $4B at $60B) | Active | ✅ | | **[[Palantir]]** | CIA-incubated data analytics, government AI, ICE systems | Early backer | **Public** (IPO 2020). 18.5x return, **$3.1B** distributed | ✅ | | **[[SpaceX]]** | Rockets, Starlink, Starshield defense division | **$671M** invested | Active. **27.1x return**, $18.2B | ✅ | | **[[Scale AI]]** | AI training data, Pentagon AI applications | Early | Active | ✅ | | **[[Shield AI]]** | Autonomous military drones (V-BAT), Hivemind OS | Multi-round | Active | ✅ | | **[[Hadrian]]** | AI defense manufacturing automation | **$260M** Series C lead (July 2025) | Active | ✅ | | **[[Hermeus]]** | Hypersonic aircraft | Series B (with [[In-Q-Tel]]) | Active | ✅ | | **[[Flock Safety]]** | License plate readers, public safety surveillance | $275M round at $7.5B (with a16z) | Active | ✅ | | **[[Clearview AI]]** | Facial recognition, 600+ law enforcement agencies | Thiel personal | Active | ✅ | | **Saronic** | Autonomous naval surface vessels (USVs) | Growth ($600M+ total raised) | Active | — | | **Epirus** | Directed energy weapons (counter-drone) | Series C ($250M) | Active | — | | **[[Applied Intuition]]** | Simulation for autonomous systems — military + commercial | Growth ($6B valuation) | Active | — | | **[[Rebellion Defense]]** | AI for military decision-making | Growth | Active | — | | **Valinor** | Defense tech platform bridging Palantir/Anduril/Helsing | Seed (founded 2024) | Active | — | | **General Matter** | Defense tech (co-incubated at FF) | Incubated | Active | — | | **Valthos** | AI biodefense systems | $30M seed (2025, co-backed with OpenAI) | Active | — | | **[[Gecko Robotics]]** | Industrial robotics inspection (defense infrastructure) | Series E ($500M, 2025) | Active | — | | **Impulse Space** | Orbital transportation, last-mile space delivery | $150M+ (2024–25) | Active | — | | **Varda Space Industries** | In-space manufacturing, defense applications | Series A+ (incubated at FF, $187M Series C 2025) | Active | — | **The pattern:** Founders Fund doesn't just invest in defense companies — it **incubates** them. Anduril, Valinor, General Matter, and Varda were all created inside or adjacent to the fund. This makes Founders Fund a defense company factory, not just a defense company funder. --- ### Artificial Intelligence | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **[[Anthropic]]** | [[Constitutional AI]], Claude LLM | Co-led $30B Series G (Feb 2026) at $380B valuation | Active | | **OpenAI** | LLM/AGI research | Recent investor | Active | | **DeepMind** | AI research | Early backer | **Acquired** (Google, 2014) | | **Neuralink** | Brain-computer interfaces | Series D ($280M, 2023), Series E ($650M, June 2025) | Active | | **Halter** | AI cattle management collars | Series E ($220M at $2B) | Active | --- ### Fintech & Payments | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **Stripe** | Payment processing infrastructure | Major early investor | Active | | **Ramp** | Corporate credit cards, expense management | $200M round at $16B (June 2025) | Active | | **Affirm** | Buy-now-pay-later ([[Max Levchin]], PayPal Mafia) | Early stage | **Public** (IPO 2021) | | **Nubank** | Brazilian digital bank | Growth | **Public** (IPO 2021) | | **Klarna** | Buy-now-pay-later platform | Growth | Active | | **[[Polymarket]]** | Prediction markets, Palantir partnership, insider trading scandals | Led $45M Series B + $205M bridge | Active ✅ | --- ### Consumer & Software | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **Facebook/Meta** | Social network | $500K Thiel angel → **$1B personal return** | **Public** (IPO 2012) | | **Airbnb** | Short-term rental marketplace | Early investor | **Public** (IPO 2020) | | **Spotify** | Music streaming | Led Series C (2010) | **Public** (IPO 2018) | | **Lyft** | Ride-sharing | Early investor | **Public** (IPO 2019) | | **Figma** | Design collaboration | Series C+ (2019–) | Active | | **Rippling** | HR/IT platform | Early investor | Active | | **Quora** | Q&A platform (ex-Facebook CTO) | Early investor | Active | | **Wish** | Discount e-commerce | Early investor | **Public** (IPO 2020; stock collapsed ~95%) | | **Yammer** | Enterprise social ([[David Sacks]] was CEO) | Early | **Acquired** (Microsoft, $1.2B, 2012) | | **Postmates** | Delivery service | Early | **Acquired** (Uber, $2.65B, 2020) | | **[[YouTube]]** | Video platform (PayPal Mafia co-founders) | Angel | **Acquired** (Google, $1.65B, 2006) | | **Oculus VR** | VR headsets ([[Palmer Luckey]]'s first company) | Early | **Acquired** (Facebook, $2B, 2014) | | **[[Instagram]]** | Photo sharing | Early | **Acquired** (Facebook, $1B, 2012) | --- ### Biotech & Healthcare | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **Stemcentrx** | Cancer stem cell therapies | Early → **$1.7B return** | **Acquired** (AbbVie, $10.2B, 2016) | | **Roivant Sciences** | Drug development platform ([[Vivek Ramaswamy]] founded) | Growth | **Public** | | **Freenome** | AI-powered cancer screening | Series E ($254M, 2024) | Active | | **GoodRx** | Prescription price comparison | Growth | **Public** (IPO 2020) | | **Datavant** | Healthcare data connectivity (spun from Roivant) | Growth | Active | | **HistoSonics** | Non-invasive therapeutic ultrasound | 2025 | Active | | **Peptilogics** | AI-designed peptide therapeutics | Series (Oct 2025) | Active | --- ### Energy & Climate | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **Crusoe Energy Systems** | Clean energy for AI datacenters | Series D ($600M, Dec 2024) | Active | | **Avalanche Energy** | Micro-fusion reactors | Seed/A ($50M, with Toyota) | Active | | **Solugen** | Bio-based chemical manufacturing | Led Series A/B | Active | | **Transatomic Power** | Molten salt nuclear reactors | Seed | **Defunct** (2018; efficiency claims debunked) | --- ### Crypto & Web3 | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **Pudgy Penguins / Igloo** | NFT brand, Layer 2 blockchain (Abstract) | Series ($11M, 2024) | Active | | **Bitpay** | Bitcoin payment processor | Growth | Active | --- ### Aerospace (Non-Defense Primary) | Company | What It Does | Investment | Status | |---------|-------------|------------|--------| | **Planet Labs** | Earth observation satellite constellation | Series B/C/D | **Public** (SPAC IPO) | --- ## The Returns That Built the Network The scale of Founders Fund's wins explains why [[the Thiel network]] has the capital to fund political operations, defense companies, and media simultaneously: | Investment | Cost Basis | Return | Multiple | |-----------|-----------|--------|----------| | **SpaceX** | $671M | $18.2B | **27.1x** | | **Palantir** | Undisclosed (early) | $3.1B distributed | **18.5x** | | **Facebook** | $500K (Thiel personal) | ~$1B | **~2,000x** | | **Stemcentrx** | Undisclosed | $1.7B | Major | | **Airbnb** | Early | Major | Multi-billion | | **Spotify** | Series C lead | Major | Multi-billion | These returns fund everything else: Thiel's $35M+ in 2022 political spending, the Founders Fund retreats where Anduril was conceived, the network of defense companies documented in this KB. **The consumer tech wins of the 2010s are the financial foundation of the defense tech ecosystem of the 2020s.** ## The Structural Analysis ### What Makes Founders Fund Different 1. **Incubation, not just investment.** Founders Fund doesn't wait for defense companies to show up in deal flow — it creates them. Anduril was conceived at a Founders Fund retreat. Valinor, General Matter, and Varda were incubated inside or adjacent to the fund. This is a defense company *factory*. 2. **The Trae Stephens model.** Stephens joined Palantir (2008), moved to Founders Fund (2014), then co-founded Anduril (2017) *while remaining a Founders Fund partner*. The fund invests in companies its own partners create — a closed loop that conventional VC conflict-of-interest norms would flag but that Founders Fund treats as a feature. 3. **Political-financial integration.** Ken Howery is simultaneously a fund co-founder and U.S. Ambassador to Denmark. Keith Rabois hosts fundraisers for [[JD Vance]]. Peter Thiel spent $35M+ on 2022 midterms. The fund's political network and its investment portfolio serve each other: political access produces intelligence about government procurement priorities; government positions produce favorable procurement decisions for portfolio companies. 4. **Co-investment architecture.** Founders Fund co-invests with [[Andreessen Horowitz]] (Anduril, Flock Safety, Hadrian, Hermeus) and with [[8VC]] (17 companies, [[Joe Lonsdale]]'s fund). The three firms form the capital backbone of the defense tech sector — an interlocking funding network where the same money flows through multiple vehicles into the same companies. ### The Defense Portfolio as % of Known Investments Of the ~65 most prominent publicly documented investments, **19 are defense or government-adjacent** — roughly 30%. For a generalist VC, this is an extraordinarily high concentration. By contrast, [[Sequoia Capital]] and Benchmark have essentially zero defense investments. Andreessen Horowitz's American Dynamism fund represents a16z's attempt to build what Founders Fund already has. ### The Conflict of Interest Map | Person | Founders Fund Role | Government Role | Portfolio Conflict | |--------|-------------------|-----------------|-------------------| | **Peter Thiel** | Co-founder | Major political donor, informal adviser | Palantir, Anduril, SpaceX all receive government contracts | | **Ken Howery** | Co-founder | Ambassador to Denmark (2025–) | Greenland strategic interests intersect with defense portfolio | | **Keith Rabois** | Partner (2019–24) | Trump tech policy adviser, Vance fundraiser | Spouse is Palantir adviser + Trump appointee | | **Trae Stephens** | Partner | Former Palantir (DoD work) | Co-founded Anduril while at FF | | **David Sacks** | PayPal Mafia associate | AI/Crypto Czar | Shapes AI policy affecting FF portfolio companies | | **JD Vance** | Former [[Mithril Capital]] (Thiel) | Vice President | Procurement oversight of FF-funded defense companies | See [[Defense Tech Conflicts of Interest]] for the full network map. ## See Also - [[Peter Thiel]] — Co-founder and ideological center - [[Anduril]] — The crown jewel defense investment - [[Palantir]] — The original defense tech investment - [[SpaceX]] — The largest financial return - [[Polymarket]] — Prediction markets + Palantir partnership - [[Andreessen Horowitz]] — Primary co-investment partner - [[American Dynamism]] — a16z's parallel defense fund - [[Palantir Mafia]] — The second-generation network - [[PayPal Mafia to Pentagon Pipeline]] — The conversion mechanism - [[Defense Tech Conflicts of Interest]] — The structural conflicts - [[Marc Andreessen]] — a16z co-founder, co-investment partner - [[Katherine Boyle]] — a16z's American Dynamism architect - [[Keith Rabois]] — Former partner, PayPal Mafia, political operator - [[Ken Howery]] — Co-founder, now Ambassador to Denmark - [[Delian Asparouhov]] — Partner and Varda founder; co-founded the [[Hill and Valley Forum]]