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Durable Capital Partners, LP
Henry Ellenbogen · Hedge Fund · Growth
Durable Capital Partners LP is a Maryland-based investment firm founded in 2019 by Henry Ellenbogen, the former lead manager of T. Rowe Price’s New Horizons Fund. Headquartered in Chevy Chase, the firm employs a fundamental, research-driven approach to invest in high-quality growth companies across both public and private markets. Durable Capital specializes in identifying and holding "compounders"—businesses with durable competitive advantages and the potential for long-term value creation. The firm typically focuses on small- and mid-cap equities, maintaining a concentrated portfolio and a multi-year investment horizon. By bridging the gap between public and private equity, Durable Capital seeks to support companies throughout their growth lifecycle, serving institutional investors with a strategy grounded in extensive due diligence and a commitment to durable growth.
Simulated Performance
| Metric | Value |
|---|---|
| Total return | -17.3% |
| YTD return | -15.9% |
| Sharpe ratio | -1.04 |
| Win rate | 25% |
| AUM | $9.3B |
| Inception | Oct 1, 2025 |
| Updated | Sep 18, 2026 |
Institution Status
| Field | Value |
|---|---|
| AUM | $9.3B |
| Turnover | Low (<15%) |
| Avg holding | 18 Months |
| Inception | Oct 1, 2025 |
| Website | https://www.durablecap.com |
Current Holdings
Updated on Sep 18, 2026.
| Ticker | Name | Portfolio % | Return |
|---|---|---|---|
| BSP | Bending Spoons S.p.A. Ordinary Shares | 11.1% | -13.7% |
| DASH | DoorDash, Inc. Class A Common Stock | 10.6% | -0.8% |
| RBC | RBC Bearings Incorporated | 9.2% | +18.3% |
| FERG | Ferguson Plc | 7.3% | -9.5% |
| MELI | MercadoLibre Inc. | 6.5% | -9.2% |
| Q | Qnity Electronics, Inc | 5.9% | -9.5% |
| CVNA | Carvana Co | 5.4% | -9.0% |
| APG | Api Group Corp | 5.2% | +6.6% |
| XPO | XPO Logistics Inc | 4.9% | +31.4% |
| TWLO | Twilio Inc | 4.8% | +2.5% |
| AFRM | Affirm Holdings Inc | 3.9% | +30.4% |
| SHOP | Shopify Inc | 3.9% | -16.0% |
| CLH | Clean Harbors Inc | 3.0% | +10.3% |
| MAIR | Madison Air Solutions Corporation | 2.9% | -38.2% |
| CRH | CRH PLC ADR | 2.7% | -10.1% |
| FN | Fabrinet | 2.7% | -6.2% |
| PRVA | Privia Health Group Inc | 2.6% | -19.7% |
| FLS | Flowserve Corporation | 2.5% | -8.0% |
| RKT | Rocket Companies Inc | 2.5% | -29.3% |
| ULS | UL Solutions Inc. | 2.4% | -24.5% |
Recent activity
| Date | Action | Ticker | Weight |
|---|---|---|---|
| Aug 31, 2026 | SELL | FOUR | 2.5% → 0.0% |
| Aug 31, 2026 | BUY | MAIR | 3.0% → 2.9% |
| Aug 31, 2026 | SELL | Q | 7.1% → 5.9% |
| Aug 31, 2026 | BUY | PRVA | 2.7% → 2.6% |
| Aug 31, 2026 | SELL | APG | 6.2% → 5.2% |
Investment Style Analysis
Durable Capital Partners, LP is widely recognized for employing a Growth strategy. As of Sep 18, 2026, the firm oversees approximately $9.3B in assets under management (AUM). The portfolio demonstrates a clear preference for the Internet Retail and Other sectors, reflecting a high-conviction approach to capital allocation.
Recent Market Moves
During the latest rebalancing period ending Aug 31, Durable Capital Partners, LP made a significant move by reducing the position in FOUR. This adjustment aligns with the fund's dynamic approach to risk management and capital deployment in current market conditions.
Investment Philosophy
Durable Capital Partners employs a fundamental, research-intensive investment process focused on identifying and holding high-quality, durable growth companies over multi-year periods. The firm invests across both public and private markets, aiming for concentrated positions in businesses believed to be compounders. Its philosophy is grounded in extensive due diligence and a long-term perspective, targeting companies with demonstrated competitive advantages and business models capable of driving sustained value growth. The firm is industry-agnostic but often focuses on technology, healthcare, and consumer sectors where growth characteristics are most prevalent.
Disclaimer
The content provided on this page, including the simulated portfolio performance, holdings analysis, and AI-generated insights, is for informational and educational purposes only. It does not constitute financial advice, investment recommendations, or an offer to buy or sell any securities. All data is derived from historical SEC 13F filings and other public disclosures, which have a reporting lag. The "Simulated Performance" is a hypothetical reconstruction based on past disclosures and does not represent the actual returns of the institution. Past performance is not indicative of future results. Tritonix.ai is not affiliated with Durable Capital Partners, LP.
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Frequently asked questions
How is the simulated portfolio for Durable Capital Partners, LP constructed?
This simulation is powered by Tritonix AI using official SEC filings. We focus on the "Best Ideas" by filtering for only the Top 20 largest holdings and rebalancing them to 100%. The simulation tracks performance starting from Oct 1, 2025. Our AI monitors for updates every Monday to capture major shifts. This concentrated approach highlights the manager's true stock-picking skill and mirrors their actual investment returns.
What is Durable Capital Partners, LP's largest holding?
As of the latest filing, Durable Capital Partners, LP's top position is Bending Spoons S.p.A. Ordinary Shares (BSP), representing 11.1% of the portfolio. This reflects a high-conviction bet by the institution.
What is Durable Capital Partners, LP's historical performance and risk profile?
Our simulation indicates a total return of -17.3% with a win rate of 25%. Notably, the portfolio maintains a Sharpe Ratio of -1.04, suggesting an standard level of risk-adjusted returns compared to the broader market.
What sectors does Durable Capital Partners, LP primarily invest in?
Durable Capital Partners, LP has a strong preference for the Internet Retail sector, which makes up 17.1% of their disclosed assets. The portfolio also has exposure to Other, indicating a specific thematic focus.
Is Durable Capital Partners, LP's portfolio concentrated or diversified?
Durable Capital Partners, LP runs a moderately concentrated portfolio with 20 disclosed positions. The top 3 holdings alone account for 30.9% of the total portfolio weight, suggesting a strategy that favors broader market exposure.
How has Durable Capital Partners, LP performed in 2026?
Our AI-simulated model portfolio for Durable Capital Partners, LP tracks a Year-to-Date (YTD) return of -15.9%. This metric helps investors gauge the institution's effectiveness in the current market environment.
Does Henry Ellenbogen manage Durable Capital Partners, LP directly?
Yes, Henry Ellenbogen serves as the key portfolio manager for Durable Capital Partners, LP, overseeing the investment strategy and final capital allocation decisions.