Institutional Manager · CIK 0000922940
M.D. Sass, LLC
New York, NY · File #028-04057
Latest AUM
$1.27B
Positions
35
Top-10 Concentration
55.6%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | FAIR ISAAC CORP | FICO | +32,923 | +$55.7M | $0 |
| EXITED | CANADIAN PACIFIC KANSAS CITY | 13646K108 | -745,376 | -$55.5M | $0 |
| NEW | STERIS PLC | STE | +205,936 | +$52.2M | $0 |
| REDUCE | AMPHENOL CORP NEW | 032095101 | -280,115 | -$37.9M | +$3.8M |
| REDUCE | LIBERTY MEDIA CORP DEL | FWONB | -330,047 | -$32.5M | -$2.0M |
| ADD | AMAZON COM INC | AMZN | +126,900 | +$29.3M | +$456,458 |
| EXITED | CROWN HLDGS INC | 228368106 | -297,562 | -$28.7M | $0 |
| ADD | STANDARDAERO INC | SARO | +816,573 | +$23.4M | +$1.6M |
| ADD | CLEAN HARBORS INC | CLH | +74,538 | +$17.5M | +$586,832 |
| ADD | PRIMO BRANDS CORPORATION | PRMB | +930,295 | +$15.2M | -$14.2M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202535 pos · $1.27B
- 13F HOLDINGS REPORTQ/E Sep 202535 pos · $1.23B
- 13F HOLDINGS REPORTQ/E Jun 202535 pos · $1.24B
- 13F HOLDINGS REPORTQ/E Mar 202532 pos · $1.14B
- 13F HOLDINGS REPORTQ/E Dec 202434 pos · $1.33B
- 13F HOLDINGS REPORTQ/E Sep 202436 pos · $1.35B
- 13F HOLDINGS REPORTQ/E Jun 202433 pos · $1.39B
- 13F HOLDINGS REPORTQ/E Mar 202434 pos · $886.7M
- 13F HOLDINGS REPORTQ/E Dec 202332 pos · $743.9M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | HENRY SCHEIN INC | HSIC | 1,237,873 | $93.6M | 7.37% |
| 2 | WILLIAMS COS INC | 969457100 | 1,339,634 | $80.5M | 6.35% |
| 3 | CLEAN HARBORS INC | CLH | 334,198 | $78.4M | 6.18% |
| 4 | AMETEK INC | AME | 378,980 | $77.8M | 6.13% |
| 5 | API GROUP CORP | APG | 2,005,327 | $76.7M | 6.05% |
| 6 | DANAHER CORPORATION | 235851102 | 305,019 | $69.8M | 5.50% |
| 7 | CAPITAL ONE FINL CORP | 14040H105 | 244,121 | $59.2M | 4.66% |
| 8 | STANDARDAERO INC | SARO | 1,991,537 | $57.1M | 4.50% |
| 9 | MARTIN MARIETTA MATLS INC | 573284106 | 91,204 | $56.8M | 4.48% |
| 10 | FAIR ISAAC CORP | FICO | 32,923 | $55.7M | 4.39% |
| 11 | PRIMO BRANDS CORPORATION | PRMB | 3,394,495 | $55.5M | 4.37% |
| 12 | SOMNIGROUP INTERNATIONAL INC | SGI | 585,651 | $52.3M | 4.12% |
| 13 | INTERCONTINENTAL EXCHANGE IN | 45866F104 | 322,702 | $52.3M | 4.12% |
| 14 | STERIS PLC | STE | 205,936 | $52.2M | 4.11% |
| 15 | WELLTOWER INC | WELL | 273,040 | $50.7M | 3.99% |
| 16 | CBRE GROUP INC | CBRE | 295,737 | $47.6M | 3.75% |
| 17 | QUANTA SVCS INC | 74762E102 | 91,663 | $38.7M | 3.05% |
| 18 | AMAZON COM INC | AMZN | 167,474 | $38.7M | 3.05% |
| 19 | AON PLC | AON | 108,531 | $38.3M | 3.02% |
| 20 | SLM CORP | SLMBP | 1,399,804 | $37.9M | 2.99% |