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M.D. Sass, LLC
Martin D. Sass · Investment Advisor · Value
M.D. Sass, LLC is an independent, boutique asset management firm founded in 1972 by Martin D. Sass. Based in New York City, the firm has over 50 years of experience managing various asset classes through multiple economic cycles. The institution specializes in high-conviction equity strategies, structured fixed income, and alternative investments, catering to a diverse clientele that includes Fortune 500 companies, pension funds, endowments, foundations, and high-net-worth individuals. Throughout its history, M.D. Sass has been recognized for its focus on identifying out-of-favor or misunderstood investment opportunities where market perception lags reality. In addition to its primary investment activities, the firm has a long-standing history of seeding and incubating new asset management businesses, having successfully developed numerous investment management ventures across various sectors and geographies.
Simulated Performance
| Metric | Value |
|---|---|
| Total return | +5.7% |
| YTD return | +1.4% |
| Sharpe ratio | 3.58 |
| Win rate | 46% |
| AUM | $1.3B |
| Inception | Oct 1, 2025 |
| Updated | Sep 18, 2026 |
Institution Status
| Field | Value |
|---|---|
| AUM | $1.3B |
| Turnover | Low (<15%) |
| Avg holding | 18 Months |
| Inception | Oct 1, 2025 |
| Website | http://www.mdsass.com |
Current Holdings
Updated on Sep 18, 2026.
| Ticker | Name | Portfolio % | Return |
|---|---|---|---|
| HSIC | Henry Schein Inc | 9.0% | +26.9% |
| AMZN | Amazon.com Inc | 8.3% | +5.0% |
| AME | Ametek Inc | 6.6% | +26.5% |
| DGX | Quest Diagnostics Incorporated | 6.6% | +22.5% |
| CLH | Clean Harbors Inc | 6.6% | +32.6% |
| COF | Capital One Financial Corporation | 6.2% | -3.4% |
| WMB | Williams Companies Inc | 6.2% | +11.8% |
| PRMB | Primo Brands Corporation | 5.8% | +0.3% |
| SARO | StandardAero, Inc. | 5.1% | -21.6% |
| ADI | Analog Devices Inc | 4.6% | -1.8% |
| MLM | Martin Marietta Materials Inc | 4.5% | -19.5% |
| WELL | Welltower Inc | 4.2% | +27.1% |
| SGI | Somnigroup International Inc. | 4.2% | -18.7% |
| FLS | Flowserve Corporation | 4.0% | -7.6% |
| CHRW | CH Robinson Worldwide Inc | 3.9% | -6.5% |
| SNX | Synnex Corporation | 3.7% | +3.9% |
| KNX | Knight Transportation Inc | 3.4% | -7.9% |
| APG | Api Group Corp | 3.0% | +8.1% |
| SNDK | Sandisk Corp | 2.3% | +10.1% |
| ENTG | Entegris Inc | 1.9% | -10.7% |
Recent activity
| Date | Action | Ticker | Weight |
|---|---|---|---|
| Aug 17, 2026 | BUY | COF | 4.5% → 6.2% |
| Aug 17, 2026 | BUY | KNX | 0.0% → 3.4% |
| Aug 17, 2026 | BUY | ADI | 0.0% → 4.6% |
| Aug 17, 2026 | SELL | PWR | 3.8% → 0.0% |
| Aug 17, 2026 | BUY | CHRW | 3.6% → 3.9% |
Investment Style Analysis
M.D. Sass, LLC is widely recognized for employing a Value strategy. As of Sep 18, 2026, the firm oversees approximately $1.3B in assets under management (AUM). The portfolio demonstrates a clear preference for the Specialty Industrial Machinery and Medical Distribution sectors, reflecting a high-conviction approach to capital allocation.
Recent Market Moves
During the latest rebalancing period ending Aug 17, M.D. Sass, LLC made a significant move by increasing exposure to COF. This adjustment aligns with the fund's dynamic approach to risk management and capital deployment in current market conditions.
Investment Philosophy
The firm's core investment philosophy centers on a contrarian, value-oriented approach that seeks out-of-favor or misunderstood investment situations. By utilizing intensive, bottom-up fundamental research, M.D. Sass aims to validate investment theses and quantify the disconnect between market consensus and its own proprietary views. Its flagship equity strategy, 'Concentrated Value,' emphasizes a focused portfolio of approximately 20 predominantly large and mid-cap stocks with favorable long-term fundamentals and forecastable business models. In fixed income, the firm focuses on identifying value-added opportunities across the spectrum of securitized products, emphasizing quality and liquidity while maintaining a deep commitment to expertise in mortgage collateral and structure.
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 M.D. Sass, LLC.
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Frequently asked questions
How is the simulated portfolio for M.D. Sass, LLC 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 M.D. Sass, LLC's largest holding?
As of the latest filing, M.D. Sass, LLC's top position is Henry Schein Inc (HSIC), representing 9.0% of the portfolio. This reflects a high-conviction bet by the institution.
What is M.D. Sass, LLC's historical performance and risk profile?
Our simulation indicates a total return of +5.7% with a win rate of 46%. Notably, the portfolio maintains a Sharpe Ratio of 3.58, suggesting an exceptional level of risk-adjusted returns compared to the broader market.
What sectors does M.D. Sass, LLC primarily invest in?
M.D. Sass, LLC has a strong preference for the Specialty Industrial Machinery sector, which makes up 10.6% of their disclosed assets. The portfolio also has exposure to Medical Distribution, indicating a specific thematic focus.
Is M.D. Sass, LLC's portfolio concentrated or diversified?
M.D. Sass, LLC runs a moderately concentrated portfolio with 20 disclosed positions. The top 3 holdings alone account for 23.9% of the total portfolio weight, suggesting a strategy that favors broader market exposure.
How has M.D. Sass, LLC performed in 2026?
Our AI-simulated model portfolio for M.D. Sass, LLC tracks a Year-to-Date (YTD) return of +1.4%. This metric helps investors gauge the institution's effectiveness in the current market environment.
Does Martin D. Sass manage M.D. Sass, LLC directly?
Yes, Martin D. Sass serves as the key portfolio manager for M.D. Sass, LLC, overseeing the investment strategy and final capital allocation decisions.