Henry Ellenbogen - Man Versus Machine - [Invest Like the Best, EP.452]

Episode Summary

Executive Summary: Patrick O'Shaughnessy interviews Henry Ellenbogen of Durable Capital about his philosophy of finding the rare 1% of public companies that compound value, how Act 2 founders and operating excellence drive durable returns, and why AI, robotics, and market structure are reshaping what long-term investing should target.

Main Topics: Origin of Durable's philosophy (Priority: 5/5): Henry traces his investing worldview to biology, balance, and studying long-run winners at T. Rowe Price. The 1% compounding companies (Priority: 5/5): He argues that only a tiny slice of public stocks drive most long-term wealth creation. Act 2 founders and management (Priority: 5/5): Durable favors experienced operators who solved similar problems before and return with clearer judgment. AI, robotics, and change (Priority: 5/5): AI is framed as a new cost-curve shift that can amplify winners and punish slower adopters. Public markets as discipline (Priority: 4/5): Henry defends public ownership for companies that need outside marks, accountability, and transition support. Durable's culture and process (Priority: 4/5): The firm uses writing, reviews, and lookbacks to keep humility, rigor, and learning central. People, fun, and sports mentality (Priority: 3/5): He emphasizes competitive excellence without zero-sum bitterness, rooted in teamwork and joy.

Key Arguments: Great investors should seek balance among customers, employees, shareholders, and communities. Only about 1% of public stocks are true valedictorians over a 10-year window. About 80% of the best compounding companies begin as small caps. If a founder has succeeded once, the probability of success again is higher. AI will matter most in existing businesses that can use it to gain scale or lower costs. Public markets add discipline by forcing companies to show progress on profitability and resilience. Durable prefers businesses it can own through transition, not just trade around volatility. Act 2 founders like Workday's and Affirms's leadership can combine prior experience with a new platform. Durable hires for curiosity, resilience, and the ability to make colleagues better. The firm writes memos to test whether a business can compound, improve, and keep earning trust over time.

Data Points: Expense reviews automated by Ramp: 85% - Sponsor mention at the start of the episode Expense-review accuracy with AI: 99% - Sponsor mention at the start of the episode Company savings from Ramp: 5% - Sponsor mention at the start of the episode Annual compounding at T. Rowe Price's New Horizons Fund: 19% annually - Patrick's introduction describing Henry's track record Years of outperformance: nearly a decade - Patrick's introduction describing Henry's track record Public stocks that compound at 20% annually or better over 10 years: about 40 stocks - Henry's estimate of the true long-term winners Share of stock market that represents: about 1% - Henry's estimate of the valedictorian companies Share of great companies that begin as small caps: about 80% - Henry's study of where compounding journeys start Small-cap stores when Walmart went public: 50 stores - Henry's example of Walmart's early IPO stage Firm scale mentioned for New Horizons Fund: about $8 billion - Henry describing the size of the retail fund he managed Durable's capital mix: 10% to 15% in private markets - Henry describing portfolio construction Durable investment team size: 12 people - Henry describing firm culture and collaboration Durable's new private investments since 2023: 14 new private investments - Henry discussing pacing after a slower period 3-year lookback process: every investment owned for 3 years - Henry describing Durable's review discipline Negative-yield treasury bills: 30% of all treasury bills in the world - Henry explaining the free-money era in 2022 Average loss in Russell 2000 Growth during 2022: over 70% - Henry contrasting the market's reaction to loss-making companies Netflix valuation in recapitalization discussion: $4.5 billion - Henry recalling the pipe investment period Public-market concentration estimate: 80% to 90% of institutional flow - Henry estimating the influence of short-cycle agency and quant flows Amazon's cost curve: 3% to 5% a year for 20 straight years - Henry using Amazon as the model for durable advantage Duolingo chess product launch: two people for six months, then four more people - Henry describing AI-enabled product development Duolingo chess product time to build: nine months - Henry's example of AI accelerating product creation Duolingo chess product scale: well over a million DAUs - Henry noting the product's adoption

Pivotal Quotes: "Let's go do less so we can do more." — Henry Ellenbogen: His response to market structure, time horizons, and what Durable should avoid "We want to have fun and we actually root for everyone." — Henry Ellenbogen: His description of Durable's culture and competitive mindset "The riskiest thing is to own the durable asset. And the safest thing to do is go by the next standard." — Henry Ellenbogen: His takeaway from the media and digital disruption example

Implications: The open question is which companies can absorb AI and robotics early enough to stay ahead; listeners should watch for proof of operating progress, not just story.