M.D. Sass, LLC — 13F Holdings & Portfolio
CIK 922940 · latest 13F-HR filed 2026-05-14
M.D. Sass, LLC manages $1.32B in 13F-reported U.S. long-equity assets across 36 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are HSIC (7.11%), WMB (6.48%), AME (5.88%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 6 new positions, exited 5, added to 11, and trimmed 13.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$1.32B
Long-equity book
36
Distinct positions
2026-03-31
Filed 2026-05-14
+6 / −5 / ↑11 / ↓13
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- AMAZON COM INC$16.3M +42.2%
- PRIMO BRANDS CORPORATION$8.2M +14.8%
- AON PLC$7.7M +20.0%
- INTERCONTINENTAL EXCHANGE IN$6.6M +12.7%
- WILLIAMS COS INC$4.9M +6.1%
Top Trims
- DANAHER CORP DEL-$31.7M -45.4%
- API GROUP CORP-$20.7M -26.9%
- FAIR ISAAC CORP-$8.5M -15.2%
- CBRE GROUP INC-$8.2M -17.2%
- CLEAN HARBORS INC-$6.0M -7.6%
New Positions
- RBB FUND TRUST$66.9M
- QUEST DIAGNOSTICS INC$58.7M
- C H ROBINSON WORLDWIDE IN$37.5M
- SYNOPSYS INC$30.5M
- GILDAN ACTIVEWEAR INC$22.1M
Exited Positions
- STERIS PLC$52.2M
- SLM CORP$37.9M
- ALCON AG$34.0M
- BLUE OWL CAPITAL INC$2.4M
- LIBERTY MEDIA CORP DEL$989.7K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | SCHEIN HENRY INC | HSIC | 806407102 | $93.8M | 7.11% | 1,273,316 | SH |
| 2 | WILLIAMS COS INC | WMB | 969457100 | $85.4M | 6.48% | 1,173,920 | SH |
| 3 | AMETEK INC | AME | 031100100 | $77.6M | 5.88% | 361,795 | SH |
| 4 | CLEAN HARBORS INC | CLH | 184496107 | $72.4M | 5.49% | 252,540 | SH |
| 5 | RBB FUND TRUST | SASS | 75526L613 | $66.9M | 5.07% | 2,884,000 | SH |
| 6 | PRIMO BRANDS CORPORATION | PRMB | 741623102 | $63.7M | 4.83% | 3,383,017 | SH |
| 7 | MARTIN MARIETTA MATLS INC | MLM | 573284106 | $60.7M | 4.60% | 103,109 | SH |
| 8 | INTERCONTINENTAL EXCHANGE IN | ICE | 45866F104 | $58.9M | 4.46% | 374,368 | SH |
| 9 | QUEST DIAGNOSTICS INC | DGX | 74834L100 | $58.7M | 4.45% | 299,459 | SH |
| 10 | API GROUP CORP | APG | 00187Y100 | $56.1M | 4.25% | 1,383,635 | SH |
| 11 | STANDARDAERO INC | SARO | 85423L103 | $55.5M | 4.21% | 2,149,680 | SH |
| 12 | AMAZON COM INC | AMZN | 023135106 | $55.0M | 4.17% | 263,973 | SH |
| 13 | CAPITAL ONE FINL CORP | COF | 14040H105 | $53.4M | 4.05% | 292,901 | SH |
| 14 | WELLTOWER INC | WELL | 95040Q104 | $50.5M | 3.83% | 255,592 | SH |
| 15 | SOMNIGROUP INTERNATIONAL INC | SGI | 88023U101 | $47.5M | 3.60% | 642,354 | SH |
| 16 | FAIR ISAAC CORP | FICO | 303250104 | $47.2M | 3.58% | 44,221 | SH |
| 17 | AON PLC | AON | G0403H108 | $46.0M | 3.48% | 142,362 | SH |
| 18 | CBRE GROUP INC | CBRE | 12504L109 | $39.3M | 2.98% | 290,485 | SH |
| 19 | DANAHER CORP DEL | DHR | 235851102 | $38.1M | 2.89% | 201,201 | SH |
| 20 | C H ROBINSON WORLDWIDE IN | CHRW | 12541W209 | $37.5M | 2.84% | 225,964 | SH |
| 21 | QUANTA SVCS INC | PWR | 74762E102 | $34.8M | 2.64% | 63,442 | SH |
| 22 | SYNOPSYS INC | SNPS | 871607107 | $30.5M | 2.31% | 76,822 | SH |
| 23 | GILDAN ACTIVEWEAR INC | GIL | 375916103 | $22.1M | 1.67% | 396,504 | SH |
| 24 | GUIDEWIRE SOFTWARE INC | GWRE | 40171V100 | $8.3M | 0.63% | 55,208 | SH |
| 25 | PALO ALTO NETWORKS INC | PANW | 697435105 | $8.1M | 0.61% | 50,516 | SH |
| 26 | MARVELL TECHNOLOGY INC | MRVL | 573874104 | $7.6M | 0.58% | 76,778 | SH |
| 27 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $7.4M | 0.56% | 11,440 | SH |
| 28 | AMPHENOL CORP | APH | 032095101 | $7.1M | 0.54% | 56,182 | SH |
| 29 | ISHARES TR | IWD | 464287598 | $7.0M | 0.53% | 32,984 | SH |
| 30 | CACI INTL INC | CACI | 127190304 | $5.1M | 0.38% | 9,316 | SH |
| 31 | ISHARES TR | ACWX | 464288240 | $3.9M | 0.30% | 57,340 | SH |
| 32 | MICROSOFT CORP | MSFT | 594918104 | $3.6M | 0.27% | 9,708 | SH |
| 33 | CADENCE DESIGN SYSTEM INC | CDNS | 127387108 | $3.6M | 0.27% | 12,887 | SH |
| 34 | BWX TECHNOLOGIES INC | BWXT | 05605H100 | $2.8M | 0.21% | 13,453 | SH |
| 35 | ALPHABET INC | GOOGL | 02079K305 | $2.0M | 0.15% | 7,031 | SH |
| 36 | ISHARES TR | HYG | 464288513 | $986.5K | 0.07% | 12,400 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-14 | $1.32B | 36 | 0001172661-26-001945 |
| 2025-12-31 | 2026-02-10 | $1.27B | 35 | 0001172661-26-000587 |
| 2025-09-30 | 2025-11-05 | $1.23B | 35 | 0001172661-25-004587 |