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Lansdowne Partners Limited
Brian Heyworth · Hedge Fund · Long/Short Equity
Lansdowne Partners is a prominent London-based investment management firm founded in 1998 by Sir Paul Ruddock and Steven Heinz. Originally established as a pioneer in the European hedge fund industry, the firm has built a reputation for its expertise in long/short and long-only equity strategies. Lansdowne focuses on delivering superior long-term returns through fundamental research and concentrated portfolios across several key strategies, including Developed Markets, European, and Greater China equities. The firm is known for its contrarian, data-driven approach and its ability to identify mispriced securities through deep sector analysis in industries such as technology, financials, and energy. Following its acquisition of CRUX Asset Management in 2023, Lansdowne continues to expand its reach and diversify its investment offerings for a global client base of institutional and private investors.
Simulated Performance
| Metric | Value |
|---|---|
| Total return | +24.2% |
| YTD return | +13.2% |
| Sharpe ratio | 3.86 |
| Win rate | 56% |
| AUM | $4.0B |
| Inception | Oct 1, 2025 |
| Updated | Sep 21, 2026 |
Institution Status
| Field | Value |
|---|---|
| AUM | $4.0B |
| Turnover | Low (<15%) |
| Avg holding | 18 Months |
| Inception | Oct 1, 2025 |
| Website | https://www.lansdownepartners.com |
Current Holdings
Updated on Sep 21, 2026.
| Ticker | Name | Portfolio % | Return |
|---|---|---|---|
| TSM | Taiwan Semiconductor Manufacturing | 15.6% | +41.5% |
| NWG | Natwest Group PLC | 15.1% | +29.6% |
| LYG | Lloyds Banking Group PLC ADR | 11.3% | +27.3% |
| ARM | Arm Holdings plc American Depositary Shares | 6.5% | +33.8% |
| ADI | Analog Devices Inc | 5.2% | +13.8% |
| RIO | Rio Tinto ADR | 5.1% | +16.6% |
| DAL | Delta Air Lines Inc | 5.0% | +39.6% |
| UAL | United Airlines Holdings Inc | 4.3% | +16.8% |
| BAESY | BAE Systems PLC | 4.1% | +0.0% |
| BKR | Baker Hughes Co | 3.9% | -7.3% |
| SLB | Schlumberger NV | 3.6% | -9.0% |
| TSCDY | Tesco PLC | 3.0% | 0.0% |
| LIN | Linde plc Ordinary Shares | 2.9% | -6.4% |
| SSEZY | SSE PLC ADR | 2.6% | +0.0% |
| WBRBY | Wienerberger Baustoffindustrie | 2.6% | 0.0% |
| RTO | Rentokil Initial PLC | 2.3% | -30.0% |
| MT | ArcelorMittal SA ADR | 1.8% | +7.3% |
| IFNNY | Infineon Technologies AG ADR | 1.8% | 0.0% |
| IBDRY | Iberdrola SA | 1.8% | 0.0% |
| ASML | ASML Holding NV ADR | 1.2% | +0.9% |
Recent activity
| Date | Action | Ticker | Weight |
|---|---|---|---|
| Aug 31, 2026 | SELL | TSCDY | 3.0% → 3.0% |
| Aug 31, 2026 | BUY | ARM | 6.4% → 6.5% |
| Aug 31, 2026 | BUY | NWG | 15.2% → 15.1% |
| Aug 31, 2026 | BUY | SSEZY | 2.5% → 2.6% |
| Aug 31, 2026 | BUY | DAL | 5.5% → 5.0% |
Investment Style Analysis
Lansdowne Partners Limited is widely recognized for employing a Long/Short Equity strategy. As of Sep 21, 2026, the firm oversees approximately $4.0B in assets under management (AUM). The portfolio demonstrates a clear preference for the Semiconductors and Banks - Regional sectors, reflecting a high-conviction approach to capital allocation.
Recent Market Moves
During the latest rebalancing period ending Aug 31, Lansdowne Partners Limited made a significant move by reducing the position in TSCDY. This adjustment aligns with the fund's dynamic approach to risk management and capital deployment in current market conditions.
Investment Philosophy
The core investment philosophy of Lansdowne Partners is rooted in a fundamental, research-intensive approach to equity investing. The firm prioritizes independent, bottom-up analysis to identify high-conviction investment opportunities that are often overlooked or misunderstood by the broader market. Lansdowne's strategy emphasizes long-term value creation, constructing concentrated portfolios that reflect its highest-conviction ideas while maintaining a rigorous focus on risk management. By leveraging the deep sector expertise of its portfolio managers and a disciplined, analytical process, the firm aims to generate consistent alpha across varying market cycles, focusing on sustainable business models and structural themes in the global economy.
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 Lansdowne Partners Limited.
Similar Investment Style
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Frequently asked questions
How is the simulated portfolio for Lansdowne Partners Limited 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 Lansdowne Partners Limited's largest holding?
As of the latest filing, Lansdowne Partners Limited's top position is Taiwan Semiconductor Manufacturing (TSM), representing 15.6% of the portfolio. This reflects a high-conviction bet by the institution.
What is Lansdowne Partners Limited's historical performance and risk profile?
Our simulation indicates a total return of +24.2% with a win rate of 56%. Notably, the portfolio maintains a Sharpe Ratio of 3.86, suggesting an exceptional level of risk-adjusted returns compared to the broader market.
What sectors does Lansdowne Partners Limited primarily invest in?
Lansdowne Partners Limited has a strong preference for the Semiconductors sector, which makes up 29.2% of their disclosed assets. The portfolio also has exposure to Banks - Regional, indicating a specific thematic focus.
Is Lansdowne Partners Limited's portfolio concentrated or diversified?
Lansdowne Partners Limited runs a moderately concentrated portfolio with 20 disclosed positions. The top 3 holdings alone account for 42.0% of the total portfolio weight, suggesting a strategy that favors broader market exposure.
How has Lansdowne Partners Limited performed in 2026?
Our AI-simulated model portfolio for Lansdowne Partners Limited tracks a Year-to-Date (YTD) return of +13.2%. This metric helps investors gauge the institution's effectiveness in the current market environment.
Does Brian Heyworth manage Lansdowne Partners Limited directly?
Yes, Brian Heyworth serves as the key portfolio manager for Lansdowne Partners Limited, overseeing the investment strategy and final capital allocation decisions.