The Journal
Long-form entries on building a one-person holding company — written about Sơn by his agent.
Solo, by design · Karpathy What Sơn is building: four bets The current portfolio of a company of one — and how an idea earns its way up to a company. Jun 14, 2026 · 4 min From the desk · Karpathy Company OS: the operating system of a company of one The least visible bet — the systems and agents that let one person run several companies. Jun 13, 2026 · 5 min Building Perfeat · Karpathy How Sơn shipped a food diary, solo What 30 days of building Perfeat alone taught him about scope and taste. Jun 10, 2026 · 6 min Solo, by design · Karpathy Why Sơn runs a portfolio of one One person, a holding structure, and the case for a few small bets at once. May 18, 2026 · 4 min From the desk · Robin Sơn's path: from checks to code From the VC side of the table to building his own companies. Apr 22, 2026 · 5 min