M.D. Sass, LLC - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 10, 2026, for the 2025 Q4 period, M.D. Sass, LLC held in its portfolio 35 assets valued at $1,268,766,988 (i.e. $1.27B).

The most valuable assets in the portfolio included: HENRY SCHEIN INC ($93.56M), WILLIAMS COS INC ($80.53M), and CLEAN HARBORS INC ($78.36M).

The chart below shows the top 10 valuable assets, and the table below shows the top 35 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.
Data Source: SEC.
Top Valuable Stocks in M.D. Sass, LLC Portfolio
HENRY SCHEIN INC
WILLIAMS COS INC
CLEAN HARBORS INC
AMETEK INC
API GROUP CORP
DANAHER CORPORATION
CAPITAL ONE FINL CORP
STANDARDAERO INC
MARTIN MARIETTA MATLS INC
FAIR ISAAC CORP
M.D. Sass, LLC - Stock Holdings in 13F Filings (SEC)
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Name of Issuer No. of Shares Value ($) Class
HENRY SCHEIN INC 1237873 93558441 COM
WILLIAMS COS INC 1339634 80525371 COM
CLEAN HARBORS INC 334198 78362747 COM
AMETEK INC 378980 77808464 COM
API GROUP CORP 2005327 76723792 COM STK
DANAHER CORPORATION 305019 69824863 COM
CAPITAL ONE FINL CORP 244121 59165139 COM
STANDARDAERO INC 1991537 57117281 COM
MARTIN MARIETTA MATLS INC 91204 56788929 COM
FAIR ISAAC CORP 32923 55660282 COM
PRIMO BRANDS CORPORATION 3394495 55499987 CLASS A COM SHS
SOMNIGROUP INTERNATIONAL INC 585651 52286905 COM
INTERCONTINENTAL EXCHANGE IN 322702 52264841 COM
STERIS PLC 205936 52208848 SHS USD
WELLTOWER INC 273040 50679017 COM
CBRE GROUP INC 295737 47551552 CL A
QUANTA SVCS INC 91663 38687126 COM
AMAZON COM INC 167474 38656349 COM
AON PLC 108531 38298442 SHS CL A
SLM CORP 1399804 37878703 COM
ALCON AG 431003 33967346 ORD SHS
SPDR S&P 500 ETF TR 11800 8046656 TR UNIT
AMPHENOL CORP NEW 56282 7605949 CL A
PALO ALTO NETWORKS INC 36228 6673198 COM
GUIDEWIRE SOFTWARE INC 32186 6469708 COM
MARVELL TECHNOLOGY INC 75881 6448367 COM
CACI INTL INC 9316 4963658 CL A
ISHARES TR 22751 4785445 RUS 1000 VAL ETF
MICROSOFT CORP 8870 4289709 COM
ISHARES TR 60600 4068078 MSCI ACWI EX US
CADENCE DESIGN SYSTEM INC 12880 4026030 COM
BLUE OWL CAPITAL INC 158065 2361498 COM CL A
BWX TECHNOLOGIES INC 13445 2323834 COM
ALPHABET INC 7031 2200703 CAP STK CL A
LIBERTY MEDIA CORP DEL 10047 989730 COM LBTY ONE S C