Invest Like the Best
Finding The 1% of Stocks That Matter | Henry Ellenbogen Interview
Episode Summary
AI-generated · Mar 2026AI-generated summary — may contain inaccuracies. Not a substitute for the full episode or professional advice.
Henry Ellenbogen, the founder of Durable Capital Partners and a seasoned investor, shares the unique origin story of his investment philosophy and Durable's deliberate approach to identifying and investing in the market's rare "compounders." Ellenbogen, who came to investing from a background in organic chemistry and politics, applies principles from biology—like organisms achieving balance with their ecosystem to persist and thrive—to understand how companies can achieve generational success. This perspective underpins Durable's strategy to focus on the "1% of stocks that matter," a concept born from his deep dive into the 50-year history of T. Rowe Price's New Horizon Fund, where he discovered that a mere 20 stocks drove its entire performance, including a significant insight from the missed opportunity with Walmart.
👤 Who Should Listen
- Long-term investors seeking to understand how to identify and back 'generational companies' in public and private markets.
- Entrepreneurs and founders contemplating their go-to-market strategy, especially those with prior successful ventures.
- Anyone interested in the impact of AI and robotics on business operations, cost structures, and competitive advantage across diverse industries.
- Investment professionals and fund managers looking for strategies to navigate short-term market volatility through a disciplined, fundamental lens.
- Leaders and executives aiming to build adaptable, resilient organizational cultures that balance growth, profitability, and innovation amidst continuous change.
- Individuals curious about the intersection of science (biology), history, and investment philosophy.
🔑 Key Takeaways
- 1.Only about 1% of public stocks, roughly 40 over a rolling 10-year period, compound wealth at 20% annually or more, achieving over 6x growth, and 80% of these wealth compounders begin as small-cap companies.
- 2.A significant competitive advantage for companies is the ability to leverage new technologies like AI to either substantially lower relative costs, gain revenue scale, or reinvest in persistent infrastructure that competitors cannot easily replicate, as seen with Amazon's physical fulfillment centers and Domino's Pizza's app investment.
- 3.Investing in 'Act 2 teams'—experienced entrepreneurs who have successfully built and won in a product area before and are now solving similar problems with new clarity and technology—significantly increases the probability of backing durable compounding companies.
- 4.The extreme short-term focus of much institutional capital (often on one-to-three-month horizons) creates systemic volatility and mispricing in public markets, which disciplined long-term investors like Durable can exploit by 'dollar-cost averaging down' into quality companies based on fundamental insights.
- 5.AI represents a discontinuous change potentially more impactful than the internet, mobile, or cloud, enabling a 'Kaizen to human work world' by dramatically leaning out IP-based processes and driving cost deflation at geometric rates, offering a powerful lever for existing companies to go from 'good to great'.
- 6.Public markets, despite their volatility, provide invaluable signals and discipline for companies by forcing financial clarity and allowing for the realignment of internal and external investments, which is crucial for balancing growth, profitability, and innovation through major transitions, as demonstrated by Netflix's strategic pivot to streaming.
💡 Key Concepts Explained
The 1% of Stocks That Matter
This is Henry Ellenbogen's core investment thesis, stating that over a rolling 10-year period, approximately 40 stocks (about 1% of the public market) compound wealth at 20% annually or more, achieving a 6x return. Durable's entire investment philosophy and organizational structure are purpose-built to maximize the probability of investing in these rare wealth compounders, 80% of which start as small-cap companies.
Good to Great Thesis (Leveraging Discontinuous Change)
This framework describes how existing, already well-operating companies can achieve exceptional long-term performance by effectively leveraging discontinuous technological changes (like AI) to either substantially lower costs or gain significant revenue scale. By reinvesting these advantages, they create persistent competitive moats, making it incredibly difficult for competitors to catch up, even if they possess similar resources and talent, exemplified by Domino's Pizza's technology investments or Amazon's fulfillment network.
Act 2 Teams
This refers to management teams comprised of entrepreneurs who have previously solved and successfully 'won' in a product area or business, and are now applying that deep, hard-won clarity and experience to build their next venture, often leveraging new technology. Ellenbogen highlights that these individuals possess exceptional resilience and understanding of 'exception management,' making them significantly more likely to build durable, compounding companies again, such as Workday's founders or Max Levchin with Affirm.
⚡ Actionable Takeaways
- →Study the history of successful companies and industries through case studies to identify patterns of competitive advantage and leadership that lead to durable compounding.
- →Cultivate a mindset of continuous learning and humility, especially during periods of significant technological change like AI, acknowledging that initial conclusions may be wrong and require constant updating.
- →For businesses, ruthlessly lean out processes using new technologies like AI to achieve substantial cost advantages and efficiency gains, akin to the 'China cost' in manufacturing, but for IP and white-collar work.
- →If you're an investor, develop a clear investment philosophy focused on long-term compounding and build an organizational structure and incentives that support a multi-year time horizon, even amidst short-term market volatility.
- →Entrepreneurs should aim to be 'Act 2 teams' by leveraging prior experience and deep clarity to solve problems with new technologies, aligning organizational structure and investors from a clean sheet.
- →When making investment decisions, specifically articulate why you would want to buy more shares of a company at higher prices if your thesis proves correct, rather than solely focusing on initial entry price and exit multiple.
⏱ Timeline Breakdown
💬 Notable Quotes
“I believe the path to building a compounder or even a what some people would say a generational company through the public markets is proven.”
“Over a rolling 10-year period, you have about 40 stocks that compound wealth at 20% a year or go up a little bit over 6x. So about 1% of the stock market is the are the validatorans.”
“If your competitor basically does a competitive mode attack doing the exact same thing with people as well or doesn't matter too far ahead.”
“To run a company well, you have to be in the and business, not the or business. You have to drive growth measured by market share in the short term. You have to drive innovation or allocate capital well to position yourself better for the future. And you have to drive profitability.”
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Henry Ellenbogen
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