Brian Nichols is the co-founder of Angel Squad, a community where you’ll learn how to angel invest and get a chance to invest as little as $1k into Hustle Fund's top performing early-stage startups

Brian Armstrong grew up near San Jose, California, with two engineer parents. He attended Rice University, earned degrees in economics and computer science, and spent a year in Buenos Aires working for an education company before joining Airbnb as a software engineer in 2011. The job exposed him to the complexity of sending money to 190 countries. He had read the Bitcoin white paper in 2010 and understood what it could mean. He began coding nights and weekends to build a Bitcoin wallet, entered Y Combinator in 2012 with a $150,000 investment, and launched Coinbase. Brian Armstrong investments began with that $150,000 and a thesis that has not changed: a more open global financial system, built on blockchain infrastructure, will be better for more people than the one it replaces.

The Coinbase Story

Coinbase's path from a San Francisco apartment to S&P 500 inclusion is one of the more dramatic company arcs in technology history. The company went public via direct listing on Nasdaq in April 2021, reaching a $100 billion market capitalization at launch and making Armstrong's stake worth close to $20 billion at peak. The crypto winter of 2022 dropped Coinbase's market cap by over 90% and Armstrong's net worth to below $2 billion. The regulatory environment in 2023 included an SEC lawsuit that cast significant uncertainty over the business. By 2025, the SEC had ended its lawsuit, crypto markets had recovered following the 2024 Bitcoin halving and the regulatory shift that followed the US election, and Coinbase joined the S&P 500 in May 2025. Armstrong's stake is now worth approximately $7 billion, making him one of the wealthiest people in crypto.

Armstrong has been an unusually vocal CEO throughout the cycle. His 2020 blog post declaring Coinbase a "mission-focused company" that would not take official stances on political issues generated significant controversy and prompted some employee departures, but it also produced an unusually focused company culture. He spent heavily on Washington advocacy through his Fairshake super PAC in the 2024 election cycle, contributing to political outcomes he believed would be favorable for the crypto industry.

Eric Bahn, Hustle Fund GP, has talked about how founders who build around a clear, specific mission tend to make more consistent decisions under pressure. Armstrong's mission, open financial infrastructure, has been the filter for every significant Coinbase product and policy decision across thirteen years.

Coinbase Ventures and the Ecosystem

Coinbase Ventures, the investment arm Armstrong launched in 2018, has backed over 550 blockchain startups, making it one of the most active and influential crypto-specific investors. The portfolio includes Bitso (Latin American crypto exchange), Starkware (zero-knowledge proofs), OpenSea (NFT marketplace), Uniswap (decentralized exchange), Compound (DeFi lending), and hundreds of others. In January 2025, Coinbase Ventures announced an investment in Próspera, the charter city project in Honduras, reflecting Armstrong's interest in alternative governance models and decentralized economic zones.

In 2025, Armstrong was also building Base, Coinbase's Layer 2 blockchain network built on Ethereum, which by 2025 was recording record on-chain activity and attracting increasing developer and user adoption.

Shiyan Koh, Hustle Fund managing partner, has talked about how the most durable venture portfolios in technology are the ones that reflect genuine belief in a platform shift rather than opportunistic bets across categories. Coinbase Ventures' concentration in blockchain infrastructure is the most disciplined version of this approach in crypto.

NewLimit and the Longevity Bet

Beyond crypto, Armstrong has made one of the more significant personal investments of any technology founder in recent years: NewLimit, a biotechnology company he co-founded with Blake Byers to research the biology of aging through epigenetic reprogramming. Armstrong and Byers have committed $110 million of personal funds to the venture. A May 2025 funding round valued NewLimit at $825 million post-money. Armstrong has framed the investment as the most important problem he could be working on after crypto: if aging is programmable rather than inevitable, the implications are more significant than any financial system transformation.

He also self-funded ResearchHub, a platform attempting to make scientific research more accessible and incentivized, modeled on how GitHub democratized code sharing. The platform pays researchers in cryptocurrency for publishing and reviewing work.

Elizabeth Yin, Hustle Fund GP, has talked about how the most interesting second-acts for founders are the ones where they take the same conviction about system transformation and apply it to a different domain. Armstrong's move into longevity and open scientific infrastructure follows exactly that pattern.

Angel Squad and the Infrastructure-First Thesis

Brian Armstrong investments across Coinbase, Coinbase Ventures, NewLimit, and ResearchHub all follow the same logic: the most durable returns come from investing in infrastructure that enables others to build, not from investing in applications that sit on top of infrastructure someone else owns. Angel Squad trains investors to think about early-stage companies through this lens: is this company building infrastructure that other companies will depend on, or is it building on infrastructure that someone else controls? With 2,500 members across 50 countries, the community develops exactly this kind of systems-level thinking about early-stage portfolios. Visit hustlefund.vc/squad.

The Takeaway

Brian Armstrong co-founded Coinbase with a specific thesis: the global financial system is broken in ways that blockchain infrastructure can fix, and the people who build that infrastructure will generate extraordinary returns. Thirteen years later, Coinbase is in the S&P 500, his personal net worth is $11 billion, and he's betting $110 million of it on the proposition that aging is the next system that needs rebuilding from first principles. That's not diversification. That's conviction applied consistently across multiple domains. It's the framework every early-stage investor should be trying to develop.