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Super Investors M.D. Sass, LLC
MS

M.D. Sass, LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$1.53B
Positions
39
Quarter ended
June 30, 2026
Filed
August 07, 2026

Reported portfolio value by quarter (53 quarters reported)

$2.04B $275M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$1.22B in Q2 2013 → $1.53B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
SH Schein Henry Inc 7.0% Added 1.1% 1,286,942 $107M
Amazon Com Inc 6.2% Added 51% 399,702 $95.3M
WC Williams Cos Inc 5.3% Trimmed 7.4% 1,087,582 $80.9M
Clean Harbors Inc 5.3% Added 7.1% 270,507 $80.8M
Ametek Inc 5.3% Trimmed 7.9% 333,370 $80.7M
Primo Brands Corporation 5.0% Trimmed 7.1% 3,142,134 $76.8M
Quest Diagnostics Inc 5.0% Added 20% 360,453 $76.4M
CO Capital One Finl Corp 4.8% Added 24% 363,556 $72.9M
RF Rbb Fund Trust 4.7% Trimmed 1.0% 2,854,897 $72.2M
Standardaero Inc 4.6% Added 9.2% 2,346,749 $70.2M
Somnigroup International Inc 4.3% Added 30% 836,265 $65.6M
CH C H Robinson Worldwide In 4.2% Added 52% 343,461 $64.7M
MM Martin Marietta Matls Inc 4.1% Added 4.3% 107,511 $62M
Analog Devices Inc 4.0% New 154,854 $61.5M
Welltower Inc 3.5% Trimmed 6.9% 237,876 $54M
Sandisk Corp 3.3% New 21,968 $49.9M
Td Synnex Corporation 3.3% New 186,193 $49.8M
KT Knight-swift Transn Hldgs In 3.1% New 615,596 $47.9M
Flowserve Corp 3.1% New 634,613 $47.1M
Api Group Corp 2.5% Trimmed 35% 892,624 $37.8M
Entegris Inc 1.9% New 157,517 $28.3M
Qnity Electronics Inc 1.7% New 161,737 $26.4M
Marvell Technology Inc 1.3% Trimmed 12% 67,899 $20.2M
Marvell Technology Inc Put 1.3% New 67,600 $20.1M
Palo Alto Networks Inc 0.8% Trimmed 29% 35,885 $12.2M
Amphenol Corp 0.7% Added 14% 63,907 $11.3M
SS State Str SPDR S&P 500 ETF T 0.6% Added 4.4% 11,940 $8.92M
DD Danaher Corp Del 0.5% Trimmed 79% 41,926 $7.99M
IT Ishares Tr 0.5% Trimmed 4.3% 31,554 $7.65M
Guidewire Software Inc 0.4% Unchanged 55,208 $6.79M
CD Cadence Design System Inc 0.3% Unchanged 12,887 $4.84M
IT Ishares Tr 0.3% Unchanged 57,340 $4.36M
Alphabet Inc 0.2% Added 50% 10,523 $3.76M
IE Intercontinental Exchange In 0.2% Trimmed 92% 28,450 $3.5M
Micron Technology Inc 0.2% New 2,567 $2.96M
Bwx Technologies Inc 0.2% Unchanged 13,453 $2.62M
Microsoft Corp 0.1% Trimmed 42% 5,596 $2.09M
Nvidia Corporation 0.1% New 9,642 $1.93M
QS Quanta Svcs Inc 0.0% Trimmed 99% 332 $239K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 07, 2026

Company Action Shares changed Value of change % of portfolio
Analog Devices Inc New +154,854 +$61.5M 4.0%
Sandisk Corp New +21,968 +$49.9M 3.3%
Td Synnex Corporation New +186,193 +$49.8M 3.3%
KT Knight-swift Transn Hldgs In New +615,596 +$47.9M 3.1%
Fair Isaac Corp Exited −44,221 −$47.2M —
Flowserve Corp New +634,613 +$47.1M 3.1%
Aon PLC Exited −142,362 −$46M —
QS Quanta Svcs Inc Trimmed −63,110 −$45.4M —
IE Intercontinental Exchange In Trimmed −345,918 −$42.6M 0.2%
Cbre Group Inc Exited −290,485 −$39.3M —

Showing the 10 largest of 42 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 14, 2026

Company Action Shares changed Value of change % of portfolio
RF Rbb Fund Trust New +2,884,000 +$66.9M 5.1%
Quest Diagnostics Inc New +299,459 +$58.7M 4.4%
Steris PLC Exited −205,936 −$52.2M —
Slm Corp Exited −1,399,804 −$37.9M —
CH C H Robinson Worldwide In New +225,964 +$37.5M 2.8%
Alcon Ag Exited −431,003 −$34M —
Synopsys Inc New +76,822 +$30.5M 2.3%
Api Group Corp Trimmed −621,692 −$25.2M 4.3%
Clean Harbors Inc Trimmed −81,658 −$23.4M 5.5%
Gildan Activewear Inc New +396,504 +$22.1M 1.7%

Showing the 10 largest of 39 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 10, 2026

Company Action Shares changed Value of change % of portfolio
Fair Isaac Corp New +32,923 +$55.7M 4.4%
Canadian Pacific Kansas City Exited −745,376 −$55.5M —
Steris PLC New +205,936 +$52.2M 4.1%
AN Amphenol Corp New Trimmed −280,115 −$37.9M 0.6%
LM Liberty Media Corp Del Trimmed −330,047 −$32.5M 0.1%
Amazon Com Inc Added +126,900 +$29.3M 3.0%
CH Crown Hldgs Inc Exited −297,562 −$28.7M —
Standardaero Inc Added +816,573 +$23.4M 4.5%
Clean Harbors Inc Added +74,538 +$17.5M 6.2%
Primo Brands Corporation Added +930,295 +$15.2M 4.4%

Showing the 10 largest of 35 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 05, 2025

Company Action Shares changed Value of change % of portfolio
Alcon Ag New +511,800 +$38.1M 3.1%
AN Amphenol Corp New Trimmed −268,401 −$33.2M 3.4%
Standardaero Inc New +1,174,964 +$32.1M 2.6%
QS Quanta Svcs Inc Trimmed −71,730 −$29.7M 3.1%
LM Liberty Media Corp Del Trimmed −194,032 −$20.3M 2.9%
Welltower Inc Trimmed −97,756 −$17.4M 4.7%
Api Group Corp Added +500,857 +$17.2M 5.4%
MM Martin Marietta Matls Inc Trimmed −25,797 −$16.3M 5.0%
Cbre Group Inc Trimmed −102,900 −$16.2M 3.8%
Clean Harbors Inc Trimmed −69,209 −$16.1M 4.9%

Showing the 10 largest of 35 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 13, 2025

Company Action Shares changed Value of change % of portfolio
Primo Brands Corporation New +2,673,905 +$79.2M 6.4%
Henry Schein Inc New +1,084,196 +$79.2M 6.4%
AN Amphenol Corp New Trimmed −440,568 −$43.5M 4.8%
Jabil Inc Exited −260,953 −$35.5M —
EH Equitable Hldgs Inc Trimmed −586,641 −$32.9M 0.5%
Somnigroup International Inc New +430,296 +$29.3M 2.4%
Jpmorgan Chase & Co. Exited −108,585 −$26.6M —
Walker & Dunlop Inc Exited −253,435 −$21.6M —
VI Vanguard Index Fds Exited −40,830 −$21M —
QS Quanta Svcs Inc Trimmed −44,597 −$16.9M 5.0%

Showing the 10 largest of 39 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 09, 2025

Company Action Shares changed Value of change % of portfolio
CR Charles Riv Labs Intl Inc Exited −391,824 −$72.3M —
AN Amphenol Corp New New +1,045,366 +$68.6M 6.0%
Marvell Technology Inc Exited −599,096 −$66.2M —
BD Becton Dickinson & Co Exited −280,610 −$63.7M —
SC Sba Communications Corp New Exited −290,925 −$59.3M —
WC Williams Cos Inc New +980,392 +$58.6M 5.2%
QS Quanta Svcs Inc New +207,373 +$52.7M 4.6%
CI Caci Intl Inc Trimmed −127,963 −$47M 0.2%
VI Vanguard Index Fds Trimmed −90,188 −$46.3M 1.8%
CO Capital One Finl Corp New +243,583 +$43.7M 3.8%

Showing the 10 largest of 40 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 11, 2025

Company Action Shares changed Value of change % of portfolio
Aon PLC New +171,341 +$61.5M 4.6%
Canadian Pacific Kansas City New +843,934 +$61.1M 4.6%
LM Liberty Media Corp Del Trimmed −549,088 −$50.9M 4.6%
Marvell Technology Inc Trimmed −460,485 −$50.9M 5.0%
Welltower Inc New +386,946 +$48.8M 3.7%
Target Corp Exited −274,658 −$42.8M —
W Wabtec Trimmed −173,994 −$33M 0.1%
AP Air Prods & Chems Inc Exited −107,887 −$32.1M —
Jpmorgan Chase & Co. New +128,302 +$30.8M 2.3%
EH Equitable Hldgs Inc New +543,868 +$25.7M 1.9%

Showing the 10 largest of 37 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 13, 2024

Company Action Shares changed Value of change % of portfolio
SS SPDR S&P 500 ETF Tr Trimmed −260,000 −$149M 1.7%
LW Lamb Weston Hldgs Inc Exited −732,673 −$61.6M —
MM Martin Marietta Matls Inc New +102,083 +$54.9M 4.1%
IE Intercontinental Exchange In New +310,188 +$49.8M 3.7%
BD Becton Dickinson & Co New +185,207 +$44.7M 3.3%
IT Ishares Tr New +500,000 +$40.2M 3.0%
On Semiconductor Corp Exited −540,474 −$37M —
Cencora Inc Trimmed −128,393 −$28.9M 0.2%
Rtx Corporation Exited −255,184 −$25.6M —
Jabil Inc Trimmed −178,134 −$21.3M 3.7%

Showing the 10 largest of 36 changes.

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