Dudley & Shanley, Inc.
In its 13F for Q3 2024 (holdings as of September 30, 2024, filed December 23, 2024), Dudley & Shanley, Inc. reported 36 stock positions worth $639.7 million. Its top holding was Wheaton Precious Metals (WPM) at 12.0% of the portfolio, followed by Fiserv (FISV, 5.6%) and Aon Class A (AON, 5.3%). Compared with Q2 2024, it opened 1 new position, sold out of 1, added to 8 and reduced 7. The biggest buy was a new position in Agilent Technologies (A) and the biggest sale an exit from Ball (BALL).
- Most Recent 13F
- Q2 2026
- Location
- PALM BEACH, FL
- CIK
- 0000883511
- Portfolio Value
- $639.7M (Q3 2024)
- SEC Filing
- 0000883511-24-000006 ↗ filed Dec 23, 2024
Holdings Value
Holdings 36 stocks · $639.7M
| WPM Wheaton Precious Metals Corp. | 12.04% | 1,261,223 | $77.0M | Reduce -11.7% |
| FISV Fiserv Inc. | 5.64% | 200,866 | $36.1M | Reduce -1.6% |
| AON Aon PLC Class A | 5.32% | 98,440 | $34.1M | No change |
| RYAN Ryan Specialty Holdings Inc. | 4.79% | 461,621 | $30.6M | Reduce -0.2% |
| DHR Danaher Corp. | 4.75% | 109,257 | $30.4M | No change |
| SCI Service Corp. International | 4.71% | 381,320 | $30.1M | No change |
| APH Amphenol Corp. Class A | 4.47% | 438,370 | $28.6M | Add +0.4% |
| ADI Analog Devices Inc. | 4.41% | 122,656 | $28.2M | No change |
| AVTR Avantor Inc. | 4.39% | 1,086,127 | $28.1M | No change |
| V Visa Inc. Class A | 4.20% | 97,686 | $26.9M | No change |
| ECL Ecolab Inc. | 4.19% | 104,953 | $26.8M | Reduce -0.3% |
| WST West Pharmaceutical Services | 3.81% | 81,131 | $24.4M | Add +15.8% |
| AME Ametek Inc. | 3.74% | 139,434 | $23.9M | Add +11.3% |
| AWK American Water Works Co. Inc. | 3.68% | 160,894 | $23.5M | No change |
| DOX Amdocs Ltd. | 3.58% | 261,826 | $22.9M | Add +7.7% |
| ROL Rollins Inc. | 3.52% | 444,550 | $22.5M | Add +2.5% |
| PGR Progressive Corp. | 3.35% | 84,510 | $21.4M | Reduce -20.0% |
| FELE Franklin Electric Co. Inc. | 2.97% | 181,361 | $19.0M | No change |
| ALSN Allison Transmission Holding | 2.46% | 164,097 | $15.8M | No change |
| SCHW Schwab (charles) Corp. | 2.44% | 240,383 | $15.6M | Add +2.1% |
| WSO Watsco Inc. | 1.95% | 25,403 | $12.5M | No change |
| KAI Kadant Inc. | 1.72% | 32,500 | $11.0M | Add +196.7% |
| A Agilent Technologies Inc. | 1.30% | 55,900 | $8.3M | New |
| NXE Nexgen Energy Ltd. | 1.26% | 1,236,500 | $8.1M | No change |
| KRNT Kornit Digital Ltd. | 1.05% | 259,525 | $6.7M | Add +25.3% |
| GRID First TRST Nasd Class Edg Sgiif | 0.93% | 46,900 | $6.0M | No change |
| HEI Heico Corp. | 0.80% | 19,550 | $5.1M | No change |
| MSFT Microsoft Corp. | 0.78% | 11,584 | $5.0M | Reduce -2.0% |
| GNRC Generac Holdings Inc. | 0.59% | 23,950 | $3.8M | No change |
| ORA Ormat Technologies Inc. | 0.37% | 30,900 | $2.4M | No change |
| PHO Invesco Water Resources ETF | 0.36% | 32,780 | $2.3M | No change |
| ROP Roper Technologies Inc. | 0.22% | 2,550 | $1.4M | No change |
| ENPH Enphase Energy Inc. | 0.12% | 6,800 | $769K | Reduce -73.9% |
| DCI Donaldson Co. Inc. | 0.06% | 5,150 | $380K | No change |
| OCUL Ocular Therapeutix Inc. | 0.02% | 16,200 | $141K | No change |
| SASKF Atha Energy Corp. | 0.00% | 19,000 | $10K | No change |
Portfolio Sells Q2 2024 → Q3 2024
| BALL Ball Corp. | Sold out | 0.00% | −1.25 |
| WPM Wheaton Precious Metals Corp. | Reduce -11.7% | 12.04% | −0.82 |
| PGR Progressive Corp. | Reduce -20.0% | 3.35% | −0.42 |
| ENPH Enphase Energy Inc. | Reduce -73.9% | 0.12% | −0.33 |
| MSFT Microsoft Corp. | Reduce -2.0% | 0.78% | −0.13 |
| ECL Ecolab Inc. | Reduce -0.3% | 4.19% | −0.12 |
| RYAN Ryan Specialty Holdings Inc. | Reduce -0.2% | 4.79% | +0.19 |
| FISV Fiserv Inc. | Reduce -1.6% | 5.64% | +0.41 |
Portfolio Buys Q2 2024 → Q3 2024
| A Agilent Technologies Inc. | New | 1.30% | +1.30 |
| KAI Kadant Inc. | Add +196.7% | 1.72% | +1.16 |
| KRNT Kornit Digital Ltd. | Add +25.3% | 1.05% | +0.53 |
| DOX Amdocs Ltd. | Add +7.7% | 3.58% | +0.28 |
| AME Ametek Inc. | Add +11.3% | 3.74% | +0.15 |
| ROL Rollins Inc. | Add +2.5% | 3.52% | −0.12 |
| WST West Pharmaceutical Services | Add +15.8% | 3.81% | −0.16 |
| SCHW Schwab (charles) Corp. | Add +2.1% | 2.44% | −0.55 |
| APH Amphenol Corp. Class A | Add +0.4% | 4.47% | −0.59 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 37 | $662.3M | WPM, APH, AME, V, WSO |
| Q1 2026 | 37 | $611.2M | WPM, APH, SCI, ADI, AME |
| Q4 2025 | 33 | $622.2M | WPM, APH, V, ADI, AON |
| Q3 2025 | 32 | $621.5M | WPM, APH, V, AON, SCI |
| Q2 2025 | 36 | $636.8M | WPM, APH, V, AON, RYAN |
| Q1 2025 | 36 | $635.1M | WPM, AON, FISV, RYAN, V |
| Q4 2024 | 37 | $647.6M | WPM, FISV, AON, V, APH |
| Q3 2024 | 36 | $639.7M | WPM, FISV, AON, RYAN, DHR |
| Q2 2024 | 36 | $581.9M | WPM, FISV, APH, AON, ADI |
| Q1 2024 | 36 | $592.6M | WPM, AON, FISV, SCI, AVTR |