M.D. Sass, LLC
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 14, 2026), M.D. Sass, LLC reported 36 stock positions worth $1.3 billion. Its top holding was Henry Schein (HSIC) at 7.1% of the portfolio, followed by Williams Cos (WMB, 6.5%) and Ametek (AME, 5.9%). Compared with Q4 2025, it opened 6 new positions, sold out of 5, added to 16 and reduced 12. The biggest buy was a new position in MD Sass Conc Value ETF (SASS) and the biggest sale an exit from Steris (STE).
- Most Recent 13F
- Q2 2026
- Location
- New York, NY
- CIK
- 0000922940
- Portfolio Value
- $1.3B (Q1 2026)
- SEC Filing
- 0001172661-26-001945 ↗ filed May 14, 2026
Holdings Value
Holdings 36 stocks · $1.3B
| HSIC Henry Schein Inc. filed as SCHEIN HENRY INC | 7.11% | 1,273,316 | $93.8M | Add +2.9% |
| WMB Williams Cos Inc. | 6.48% | 1,173,920 | $85.4M | Reduce -12.4% |
| AME Ametek Inc. | 5.88% | 361,795 | $77.6M | Reduce -4.5% |
| CLH Clean Harbors Inc. | 5.49% | 252,540 | $72.4M | Reduce -24.4% |
| SASS MD Sass Conc Value ETF | 5.07% | 2,884,000 | $66.9M | New |
| PRMB Primo Brands Corp. | 4.83% | 3,383,017 | $63.7M | Reduce -0.3% |
| MLM Martin Marietta Materials | 4.60% | 103,109 | $60.7M | Add +13.1% |
| ICE Intercontinental Exchange Inc. | 4.46% | 374,368 | $58.9M | Add +16.0% |
| DGX Quest Diagnostics Inc. | 4.45% | 299,459 | $58.7M | New |
| APG Api Group Corp. | 4.25% | 1,383,635 | $56.1M | Reduce -31.0% |
| SARO Standardaero Inc. | 4.21% | 2,149,680 | $55.5M | Add +7.9% |
| AMZN Amazon.com Inc. | 4.17% | 263,973 | $55.0M | Add +57.6% |
| COF Capital One Financial Corp. | 4.05% | 292,901 | $53.4M | Add +20.0% |
| WELL Welltower Inc. | 3.83% | 255,592 | $50.5M | Reduce -6.4% |
| SGI Somnigroup International Inc. | 3.60% | 642,354 | $47.5M | Add +9.7% |
| FICO Fair Isaac Corp. | 3.58% | 44,221 | $47.2M | Add +34.3% |
| AON Aon PLC Class A | 3.48% | 142,362 | $46.0M | Add +31.2% |
| CBRE CBRE Group Inc. Class A | 2.98% | 290,485 | $39.3M | Reduce -1.8% |
| DHR Danaher Corp. | 2.89% | 201,201 | $38.1M | Reduce -34.0% |
| CHRW C.H. Robinson Worldwide Inc. | 2.84% | 225,964 | $37.5M | New |
| PWR Quanta Services Inc. | 2.64% | 63,442 | $34.8M | Reduce -30.8% |
| SNPS Synopsys Inc. | 2.31% | 76,822 | $30.5M | New |
| GIL Gildan Activewear Inc. | 1.67% | 396,504 | $22.1M | New |
| GWRE Guidewire Software Inc. | 0.63% | 55,208 | $8.3M | Add +71.5% |
| PANW Palo Alto Networks Inc. | 0.61% | 50,516 | $8.1M | Add +39.4% |
| MRVL Marvell Technology Inc. | 0.58% | 76,778 | $7.6M | Add +1.2% |
| SPY SS SPDR S&P 500 ETF Trust-US | 0.56% | 11,440 | $7.4M | Reduce -3.0% |
| APH Amphenol Corp. Class A | 0.54% | 56,182 | $7.1M | Reduce -0.2% |
| IWD iShares Russell 1000 Value E | 0.53% | 32,984 | $7.0M | Add +45.0% |
| CACI Caci International Inc. Class A | 0.38% | 9,316 | $5.1M | No change |
| ACWX iShares MSCI Acwi Ex US ETF | 0.30% | 57,340 | $3.9M | Reduce -5.4% |
| MSFT Microsoft Corp. | 0.27% | 9,708 | $3.6M | Add +9.4% |
| CDNS Cadence Design SYS Inc. | 0.27% | 12,887 | $3.6M | Add +0.1% |
| BWXT BWX Technologies Inc. | 0.21% | 13,453 | $2.8M | Add +0.1% |
| GOOGL Alphabet Inc. Class A | 0.15% | 7,031 | $2.0M | No change |
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | 0.07% | 12,400 | $987K | New |
Portfolio Sells Q4 2025 → Q1 2026
| STE Steris PLC | Sold out | 0.00% | −4.11 |
| SLM SLM Corp. | Sold out | 0.00% | −2.99 |
| ALC Alcon Inc. | Sold out | 0.00% | −2.68 |
| DHR Danaher Corp. | Reduce -34.0% | 2.89% | −2.61 |
| APG Api Group Corp. | Reduce -31.0% | 4.25% | −1.80 |
| CBRE CBRE Group Inc. Class A | Reduce -1.8% | 2.98% | −0.77 |
| CLH Clean Harbors Inc. | Reduce -24.4% | 5.49% | −0.69 |
| PWR Quanta Services Inc. | Reduce -30.8% | 2.64% | −0.41 |
| AME Ametek Inc. | Reduce -4.5% | 5.88% | −0.25 |
| OWL Blue Owl Capital Inc. | Sold out | 0.00% | −0.19 |
| WELL Welltower Inc. | Reduce -6.4% | 3.83% | −0.16 |
| FWONK Liberty Media Corp. Class C | Sold out | 0.00% | −0.08 |
| SPY SS SPDR S&P 500 ETF Trust-US | Reduce -3.0% | 0.56% | −0.07 |
| APH Amphenol Corp. Class A | Reduce -0.2% | 0.54% | −0.06 |
| ACWX iShares MSCI Acwi Ex US ETF | Reduce -5.4% | 0.30% | −0.02 |
| WMB Williams Cos Inc. | Reduce -12.4% | 6.48% | +0.13 |
| PRMB Primo Brands Corp. | Reduce -0.3% | 4.83% | +0.45 |
Portfolio Buys Q4 2025 → Q1 2026
| SASS MD Sass Conc Value ETF | New | 5.07% | +5.07 |
| DGX Quest Diagnostics Inc. | New | 4.45% | +4.45 |
| CHRW C.H. Robinson Worldwide Inc. | New | 2.84% | +2.84 |
| SNPS Synopsys Inc. | New | 2.31% | +2.31 |
| GIL Gildan Activewear Inc. | New | 1.67% | +1.67 |
| AMZN Amazon.com Inc. | Add +57.6% | 4.17% | +1.12 |
| AON Aon PLC Class A | Add +31.2% | 3.48% | +0.46 |
| ICE Intercontinental Exchange Inc. | Add +16.0% | 4.46% | +0.34 |
| IWD iShares Russell 1000 Value E | Add +45.0% | 0.53% | +0.16 |
| MLM Martin Marietta Materials | Add +13.1% | 4.60% | +0.13 |
| GWRE Guidewire Software Inc. | Add +71.5% | 0.63% | +0.12 |
| PANW Palo Alto Networks Inc. | Add +39.4% | 0.61% | +0.09 |
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | New | 0.07% | +0.07 |
| MRVL Marvell Technology Inc. | Add +1.2% | 0.58% | +0.07 |
| BWXT BWX Technologies Inc. | Add +0.1% | 0.21% | +0.03 |
| CDNS Cadence Design SYS Inc. | Add +0.1% | 0.27% | −0.05 |
| MSFT Microsoft Corp. | Add +9.4% | 0.27% | −0.07 |
| HSIC Henry Schein Inc. | Add +2.9% | 7.11% | −0.26 |
| SARO Standardaero Inc. | Add +7.9% | 4.21% | −0.29 |
| SGI Somnigroup International Inc. | Add +9.7% | 3.60% | −0.52 |
| COF Capital One Financial Corp. | Add +20.0% | 4.05% | −0.61 |
| FICO Fair Isaac Corp. | Add +34.3% | 3.58% | −0.81 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 38 | $1.5B | HSIC, AMZN, WMB, CLH, AME |
| Q1 2026 | 36 | $1.3B | HSIC, WMB, AME, CLH, SASS |
| Q4 2025 | 35 | $1.3B | HSIC, WMB, CLH, AME, APG |
| Q3 2025 | 34 | $1.2B | HSIC, WMB, DHR, AME, APG |
| Q2 2025 | 35 | $1.2B | PRMB, HSIC, CLH, AME, DHR |
| Q1 2025 | 32 | $1.1B | APH, CLH, APG, WELL, DHR |
| Q4 2024 | 33 | $1.3B | APG, CRL, VOO, MRVL, AME |
| Q3 2024 | 34 | $1.3B | FWONK, CCK, CACI, CLH, VOO |
| Q2 2024 | 32 | $1.2B | FWONK, CACI, APG, CLH, VOO |
| Q1 2024 | 32 | $845.0M | VOO, FWONK, APG, CACI, CLH |