In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 7, 2026), M.D. Sass, LLC reported 38 stock positions worth $1.5 billion . Its top holding was Henry Schein (HSIC) at 7.1% of the portfolio, followed by Amazon.com (AMZN, 6.3% ) and Williams Cos (WMB, 5.4% ). Compared with Q1 2026, it opened 9 new positions, sold out of 7, added to 12 and reduced 13. The biggest buy was a new position in Analog Devices (ADI) and the biggest sale Intercontinental Exchange (ICE, shares −92% ).
Location New York, NY
CIK 0000922940
Portfolio Value $1.5B (Q2 2026) Holdings 38 stocks · $1.5B Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q1 2026 HSIC Henry Schein Inc. filed as SCHEIN HENRY INC 1,286,942 $107.5M Add +1.1% AMZN Amazon.com Inc. 399,702 $95.3M Add +51.4% WMB Williams Cos Inc. 1,087,582 $80.9M Reduce -7.3% CLH Clean Harbors Inc. 270,507 $80.8M Add +7.1% AME Ametek Inc. 333,370 $80.7M Reduce -7.9% PRMB Primo Brands Corp. 3,142,134 $76.8M Reduce -7.1% DGX Quest Diagnostics Inc. 360,453 $76.4M Add +20.4% COF Capital One Financial Corp. 363,556 $72.9M Add +24.1% SASS MD Sass Conc Value ETF 2,854,897 $72.2M Reduce -1.0% SARO Standardaero Inc. 2,346,749 $70.2M Add +9.2% SGI Somnigroup International Inc. 836,265 $65.6M Add +30.2% CHRW C.H. Robinson Worldwide Inc. 343,461 $64.7M Add +52.0% MLM Martin Marietta Materials 107,511 $62.0M Add +4.3% ADI Analog Devices Inc. 154,854 $61.5M New WELL Welltower Inc. 237,876 $54.0M Reduce -6.9% SNDK Sandisk Corp. 21,968 $49.9M New SNX TD Synnex Corp. 186,193 $49.8M New KNX Knight-Swift Transportation 615,596 $47.9M New FLS Flowserve Corp. 634,613 $47.1M New APG Api Group Corp. 892,624 $37.8M Reduce -35.5% ENTG Entegris Inc. 157,517 $28.3M New Q Qnity Electronics Inc. 161,737 $26.4M New MRVL Marvell Technology Inc. 67,899 $20.2M Reduce -11.6% PANW Palo Alto Networks Inc. 35,885 $12.2M Reduce -29.0% APH Amphenol Corp. Class A 63,907 $11.3M Add +13.8% SPY SS SPDR S&P 500 ETF Trust-US 11,940 $8.9M Add +4.4% DHR Danaher Corp. 41,926 $8.0M Reduce -79.2% IWD iShares Russell 1000 Value E 31,554 $7.6M Reduce -4.3% GWRE Guidewire Software Inc. 55,208 $6.8M No change CDNS Cadence Design SYS Inc. 12,887 $4.8M No change ACWX iShares MSCI Acwi Ex US ETF 57,340 $4.4M No change GOOGL Alphabet Inc. Class A 10,523 $3.8M Add +49.7% ICE Intercontinental Exchange Inc. 28,450 $3.5M Reduce -92.4% MU Micron Technology Inc. 2,567 $3.0M New BWXT BWX Technologies Inc. 13,453 $2.6M No change MSFT Microsoft Corp. 5,596 $2.1M Reduce -42.4% NVDA Nvidia Corp. 9,642 $1.9M New PWR Quanta Services Inc. 332 $239K Reduce -99.5%
Options reported separately and not counted above: MRVL puts ($20.1M).
Portfolio Sells Q1 2026 → Q2 2026 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q1 2026 % Of Portfolio Change To Portfolio ▲ ICE Intercontinental Exchange Inc. Reduce -92.4% 0.23% −4.23 FICO Fair Isaac Corp. Sold out 0.00% −3.58 AON Aon PLC Class A Sold out 0.00% −3.48 CBRE CBRE Group Inc. Class A Sold out 0.00% −2.98 PWR Quanta Services Inc. Reduce -99.5% 0.02% −2.62 DHR Danaher Corp. Reduce -79.2% 0.53% −2.36 SNPS Synopsys Inc. Sold out 0.00% −2.31 APG Api Group Corp. Reduce -35.5% 2.50% −1.75 GIL Gildan Activewear Inc. Sold out 0.00% −1.67 WMB Williams Cos Inc. Reduce -7.3% 5.35% −1.12 AME Ametek Inc. Reduce -7.9% 5.34% −0.54 CACI Caci International Inc. Class A Sold out 0.00% −0.38 SASS MD Sass Conc Value ETF Reduce -1.0% 4.78% −0.29 WELL Welltower Inc. Reduce -6.9% 3.58% −0.26 MSFT Microsoft Corp. Reduce -42.4% 0.14% −0.13 HYG Ishr Ibx Usd Hiyld CB ETF-Ui Sold out 0.00% −0.07 IWD iShares Russell 1000 Value E Reduce -4.3% 0.51% −0.03 PANW Palo Alto Networks Inc. Reduce -29.0% 0.81% +0.20 PRMB Primo Brands Corp. Reduce -7.1% 5.09% +0.26 MRVL Marvell Technology Inc. Reduce -11.6% 1.34% +0.76
Portfolio Buys Q1 2026 → Q2 2026 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q1 2026 % Of Portfolio Change To Portfolio ▼ ADI Analog Devices Inc. New 4.07% +4.07 SNDK Sandisk Corp. New 3.31% +3.31 SNX TD Synnex Corp. New 3.30% +3.30 KNX Knight-Swift Transportation New 3.17% +3.17 FLS Flowserve Corp. New 3.12% +3.12 AMZN Amazon.com Inc. Add +51.4% 6.31% +2.14 ENTG Entegris Inc. New 1.88% +1.88 Q Qnity Electronics Inc. New 1.75% +1.75 CHRW C.H. Robinson Worldwide Inc. Add +52.0% 4.28% +1.44 COF Capital One Financial Corp. Add +24.1% 4.83% +0.78 SGI Somnigroup International Inc. Add +30.2% 4.34% +0.74 DGX Quest Diagnostics Inc. Add +20.4% 5.06% +0.61 SARO Standardaero Inc. Add +9.2% 4.65% +0.44 APH Amphenol Corp. Class A Add +13.8% 0.75% +0.21 MU Micron Technology Inc. New 0.20% +0.20 NVDA Nvidia Corp. New 0.13% +0.13 GOOGL Alphabet Inc. Class A Add +49.7% 0.25% +0.10 SPY SS SPDR S&P 500 ETF Trust-US Add +4.4% 0.59% +0.03 HSIC Henry Schein Inc. Add +1.1% 7.12% +0.00 CLH Clean Harbors Inc. Add +7.1% 5.35% −0.14 MLM Martin Marietta Materials Add +4.3% 4.11% −0.50
Options Activity Q1 2026 → Q2 2026 Security Type Change vs Q1 2026 Underlying Shares Value ▼ MRVL Marvell Technology Inc. put New 67,600 $20.1M
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
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