Sam Altman

Altman is a prolific early-stage investor who backs deep tech and moonshot ideas. His portfolio through YC and personal investments includes hundreds of companies.

His personal bets tend toward civilizational-scale technology — nuclear fusion, longevity research, AI safety. He has said he thinks the most important investments of the next decade will be in energy and AI.

He has repeatedly said he holds no equity in OpenAI itself, which is unusual for a founder running a company of that size and something he has been asked about constantly.

Naval Ravikant

Naval is an early-stage angel investor who backs founders he believes are building something real in large markets. He does not run a traditional fund.

He invests personally and through AngelList's syndicate model. His edge is pattern recognition built from hundreds of investments and deep engagement with the startup ecosystem.

He has said the best investments are in people, not companies — he bets on the founder's unique insight and personal character. He is known for saying yes or no quickly and not wasting founders' time.

Sam Altman

Altman believes we are approaching AGI — artificial general intelligence — and that it will be the most transformative and potentially dangerous technology humans have ever built. He thinks the right response is to build it carefully rather than cede the frontier to those who might not.

He argues that the returns from AI will be so large they will need to be distributed broadly to prevent catastrophic inequality. He has floated ideas around universal basic income funded by AI productivity.

Naval Ravikant

His wealth philosophy has been distilled into what people call "How to Get Rich" — a tweetstorm and podcast that has been read or heard by millions. The core thesis: specific knowledge (what you know that cannot be taught), leverage (code, media, capital that works while you sleep), and judgment.

He argues that wealth is built by owning equity in things, not selling your time. He is deeply skeptical of trading time for money as a long-term strategy.

Sam Altman

Altman has said that playing it safe at this moment in history is the most dangerous thing he could do. His belief: AGI is coming whether OpenAI builds it or not — the only question is who builds it and with what values.

That conviction makes conventional risk aversion feel irresponsible to him. He holds large personal positions in nuclear fusion companies and longevity biotech — bets that could return 1000x or go to zero.

He has said that any genuinely interesting bet carries existential downside risk. That is what makes it interesting, not a reason to avoid it.

Naval Ravikant

Naval's approach to angel investing is explicitly probabilistic: make many small bets, expect most to fail, and let the power-law distribution of outcomes do the work. He does not try to pick the single winner from first principles.

He backs enough founders with genuine specific knowledge that the portfolio math works. He went deep on crypto early, co-founding MetaStable Capital in 2014, years before most investors took it seriously.

He has argued that in early-stage investing, returns are so concentrated in outliers that you want maximum exposure to them.

Sam Altman

He has written about sleeping 8 hours, exercise, not scheduling meetings before 11am, eating the same lunch every day, and blocking large chunks of uninterrupted time for thinking. He is a known prepper — he has said he owns land, gold, guns, and antibiotics in case civilization collapses, which is a mildly alarming admission from the CEO of the company building AGI.

Naval Ravikant

Naval has spoken extensively about meditation and about protecting his mornings for thinking. He avoids a packed calendar.

He reads constantly, physics, philosophy and evolution, not just business books. He rejects hustle culture and argues for working deeply on a few things.

Sam Altman

OpenAI and ChatGPT. The launch of ChatGPT in November 2022 was the most consequential product launch in tech in at least a decade.

It brought AI from a niche technical field into mainstream awareness overnight and made OpenAI the fastest-growing AI company in history. Altman navigated the transition from nonprofit to commercial entity, secured $13 billion from Microsoft, and built a company valued at $157 billion within five years.

Naval Ravikant

His early bets through The Hit Forge, a $20 million fund he started in 2007. It backed Twitter when it was a chaotic startup with no business model.

Twitter went public in 2013 at about a $14 billion valuation and Elon Musk later bought it for $44 billion. The same fund got into Uber very early, before it became the most valuable private startup of its era.

He also backed Notion when it was a tiny seed-stage company.

Sam Altman

Being fired by his own board in November 2023 — and the board's subsequent reversal. Whatever actually happened in those five days is still murky.

What is clear is that the board lost control of the situation the moment it became obvious that without Altman, most of the company would leave. The board members who voted to fire him are gone.

Altman is back with more power. The episode revealed real governance problems at one of the most consequential companies in history.

Naval Ravikant

The Epinions exit. When Epinions merged into Shopping.com, the founders' common stock was worth next to nothing, even though Shopping.com went public in 2004 and was bought by eBay in 2005.

Naval felt he and the other founders had been misled about what their shares were worth. In 2005 he and three co-founders sued Benchmark Capital, August Capital and fellow co-founder Nirav Tolia.

The case settled, but it burned relationships with some of the most powerful VCs in Silicon Valley. The lesson stuck with him: know exactly what your equity is worth and who controls it.

Sam Altman

Sam Altman dropped out of Stanford in 2005 to co-found Loopt, a location-sharing startup. Loopt was acquired in 2012 for $43 million — not a huge exit but enough to establish him as a serious founder.

He then became president of Y Combinator in 2014, succeeding Paul Graham. Under Altman, YC expanded from a small cohort model to a much larger operation with global reach, including backing Airbnb, Dropbox, Stripe, and hundreds of others in its portfolio.

In 2019, he stepped down from YC to become CEO of OpenAI. The company launched ChatGPT in November 2022, which became the fastest-growing consumer application in history — 100 million users in two months.

In November 2023, the board fired him. The entire company revolted.

Microsoft — OpenAI's biggest investor — nearly hired him to run a new AI division. Five days later, he was reinstated with a restructured board.

OpenAI's valuation hit $157 billion in 2024 and roughly $852 billion by 2026.

Naval Ravikant

Naval Ravikant was born in New Delhi and moved to New York at age 9. He went to Stuyvesant High School and then Dartmouth.

He co-founded Epinions in 1999, a consumer review site that raised $45 million and merged with DealTime in 2003 to form Shopping.com. That merger ended in a lawsuit.

In 2005 Naval and three co-founders sued Benchmark Capital, August Capital and co-founder Nirav Tolia, saying they had been misled about the value of their stock. It settled later that year.

He then co-founded Vast.com, an online marketplace. In 2007 he started The Hit Forge, a small fund that backed Twitter, Uber and Stack Overflow early, and co-wrote the Venture Hacks blog on term sheets.

That blog turned into AngelList in 2010, a platform that let accredited investors back startups alongside top angels. AngelList also owns Product Hunt and raised money at a $4 billion valuation in 2022.

He also co-founded the crypto fund MetaStable Capital in 2014 and the voice app Airchat in 2023.

Sam Altman

OpenAI (CEO). Y Combinator (former president).

Loopt (co-founder, acquired 2012). Personal investments through Hydrazine Capital and a long list of early-stage bets.

Notable: Stripe, Helion Energy (nuclear fusion, where he is also chairman and the largest investor), and Retro Biosciences (longevity), which he seeded with $180 million of his own money.

Naval Ravikant

AngelList (co-founder, 2010, now chairman). Epinions (co-founder, 1999, merged into Shopping.com).

Vast.com (co-founder). The Hit Forge (a $20 million early-stage fund, 2007).

Venture Hacks (blog, 2007, the seed of AngelList). MetaStable Capital (crypto hedge fund, co-founder, 2014).

Spearhead (fund that gives founders money to angel invest, 2017). Airchat (voice social app, co-founder, 2023).

Angel investments include Twitter, Uber, Postmates, Stack Overflow, Notion, Foursquare and Yammer, among hundreds of others.

Sam Altman

Stanford University — studied computer science. Dropped out in 2005 after his sophomore year to found Loopt.

Naval Ravikant

Stuyvesant High School in New York (1991). Dartmouth College — degree in computer science and economics, 1995.