Brian Singerman

Who they are

Brian Singerman is Partner Emeritus at Founders Fund — a Stanford CS grad who built iGoogle at Google and is now raising GPx, a hybrid fund targeting over $500M with Peter Thiel as a major backer.

Person

Brian studied Computer Science at Stanford, then moved into engineering roles — early stops included There, Inc. and Google, where he shipped iGoogle, the personal web portal that ran for years before Google shut it down. While still at Google he started XGYC Fund, a $1 million angel vehicle he named for 'ex-Google, Y Combinator,' a small but pointed signal that his investor instincts predated his VC career. He moved to Founders Fund as Principal, rose to Partner, and spent a long tenure there backing companies at the earliest stages — his most publicly documented conviction was Anduril, where he wrote roughly $400M in checks across rounds and went on record praising Palmer Luckey as one of the great innovators of the era. As of December 2024 he transitioned to Partner Emeritus at Founders Fund, and by mid-2025 he was raising GPx, a hybrid fund targeting over $500M backed by Peter Thiel. His public voice spans podcast appearances on 20VC, Invest Like the Best, and This Week in Startups — themes run to upside maximisation over downside minimisation, what makes a legendary VC firm, and why founders need a real strategy. Possibly — the board-game interest noted in his public profile shapes how he thinks about long-horizon bets with asymmetric payoffs.

Market

In 2026, venture capital is highly selective — the market favors companies tackling expensive, regulated, or operationally complex workflows, with particular momentum in AI infrastructure, defense tech, and compliance. Defense technology has attracted outsized rounds driven by geopolitical urgency and long procurement cycles; Anduril, a Founders Fund portfolio company Singerman championed, raised a follow-on round at a $30.5 billion valuation. AI infrastructure is similarly heated, with Anthropic reaching a near $1 trillion valuation and Cognition crossing $26 billion — the categories Singerman has publicly focused on are exactly where capital is concentrating in 2026.

Network

Singerman's most documented relationships run through Founders Fund's founding circle — Peter Thiel, who co-founded the firm in 2005 and is now a major backer of Singerman's GPx vehicle, and Ken Howery, a key leader at the firm. His highest-profile portfolio relationship is with Palmer Luckey of Anduril, whom he backed with roughly $400M in checks and praised publicly by name.

Peter Thiel· Co-founder, Founders Fund; major backer of GPx
Ken Howery· Co-founder and key leader, Founders Fund
Palmer Luckey· Founder, Anduril

How they likely show up

Long tenure at Founders Fund followed by launching GPx → thinks in multi-year conviction arcs, not portfolio-diversification mode.
Writing a single $400M check into Anduril → extreme concentration bets when he believes; not a spray-and-pray operator.
Built iGoogle and XGYC Fund while still employed at Google → high agency, doesn't wait for permission or a clean transition to act.
Public speaking themes center on upside maximisation over downside minimisation → will likely push back on risk-framing and loss-aversion in a conversation.
Raised GPx as a 'hybrid fund' with a structural twist → actively experiments with fund mechanics, not just company bets.
Possibly — personal interest in board games signals comfort with complex rule sets, long-game strategy, and probabilistic thinking under uncertainty.

Conversation tips

→ Reference the Anduril bet specifically — the $400M check and the public praise for Luckey are points of pride; he'll engage on what made that conviction defensible early.
→ Ask about GPx's structural 'twist' — he is building something deliberately different from a standard VC fund, and he will have a clear thesis for why.
→ Frame questions around upside scenarios, not risk mitigation — he has said on record that VC is about upside maximisation, not downside minimisation; loss-aversion framing will land flat.
→ Don't treat the Partner Emeritus transition as a wind-down — he is actively raising and deploying; treat him as a principal, not a retired advisor.

Toolbox

Openers

Open on GPx — he is raising a hybrid fund targeting over $500M with Peter Thiel as a major backer, a structurally unusual vehicle that signals he has a specific view on what standard VC gets wrong.
Reference the Anduril memo — he wrote roughly $400M in checks into Anduril and went public praising Palmer Luckey by name; that conviction call, made before Anduril reached a $30.5 billion valuation, is a clean entry point into how he sizes a founder.
Bring up XGYC Fund — starting a $1M angel vehicle while still at Google, named 'ex-Google, Y Combinator,' is an unusual origin story for a Founders Fund partner and signals how early his investor instincts developed.

Discovery questions

What is the structural twist in GPx that a standard VC fund structure couldn't accommodate?
When you wrote the first check into Anduril, what did you see in Palmer Luckey that the market was discounting — and how does that pattern show up in what you're backing now?
You've said VC is about upside maximisation, not downside minimisation — how does that principle change the way you construct GPx versus how Founders Fund was built?

Avoid

Don't lead with portfolio diversification or risk-management framing — he has stated publicly that venture is about maximising upside, and a loss-aversion lens will signal you haven't done the work.

Make it yours