Dudley & Shanley, Inc. Portfolio Stock Holdings
According to the SEC 13F filed on October 6, 2026, Dudley & Shanley, Inc. disclosed 36 stock positions valued at approximately $629.16M as of quarter-end September 30, 2026. The largest holdings include Wheaton Precious Mtls, Ametek Inc., and Visa Inc..
- Report Period
- September 30, 2026
- No. of Stocks
- 36
- Portfolio Value
- $629.16M
Holdings by Sector
Dudley & Shanley, Inc. Portfolio Holdings in Q3 2026
| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| Wheaton Precious Mtls | WPM | Basic Materials | 8.96% | 421,408 | -33,232 | -7.31% | $56,350,678 |
| Ametek Inc. | AME | Industrials | 5.01% | 127,243 | -12,488 | -8.94% | $31,521,908 |
| Visa Inc. | V | Financial Services | 4.82% | 84,419 | -12,552 | -12.94% | $30,334,279 |
| Ecolab Inc. | ECL | Basic Materials | 4.32% | 99,043 | -5,650 | -5.40% | $27,195,227 |
| Service Corp. Int'l | SCI | Consumer Cyclical | 4.14% | 342,425 | -25,358 | -6.89% | $26,075,664 |
| Amphenol Corp. | APH | Technology | 4.12% | 307,828 | +73,377 | +31.30% | $25,949,900 |
| Analog Devices | ADI | Technology | 4.08% | 64,639 | -2,561 | -3.81% | $25,642,938 |
| Aon plc | AON | Financial Services | 3.75% | 85,202 | -3,605 | -4.06% | $23,581,358 |
| Donaldson Co., Inc. | DCI | Industrials | 3.60% | 260,170 | -12,160 | -4.47% | $22,645,197 |
| Fastenal Co. | FAST | Industrials | 3.58% | 454,940 | -17,500 | -3.70% | $22,533,178 |
| Ferguson Enterprises | FERG | Industrials | 3.54% | 100,032 | -4,193 | -4.02% | $22,269,124 |
| Progressive Corp. | PGR | Financial Services | 3.43% | 104,152 | +37,872 | +57.14% | $21,591,751 |
| Amer. Water Works | AWK | Utilities | 3.30% | 160,550 | -8,794 | -5.19% | $20,786,408 |
| Charles Schwab | SCHW | Financial Services | 3.29% | 211,965 | -28,968 | -12.02% | $20,717,459 |
| Tyler Technologies | TYL | Technology | 3.26% | 64,400 | +64,400 | +100.00% | $20,517,840 |
| Roper Technologies | ROP | Technology | 3.18% | 57,325 | +55,325 | +2766.25% | $20,029,928 |
| Allison Transmission | ALSN | Consumer Cyclical | 3.16% | 175,274 | +10,237 | +6.20% | $19,851,533 |
| Kornit Digital | KRNT | Industrials | 3.09% | 1,168,545 | -86,720 | -6.91% | $19,421,218 |
| Federal Signal Corp | FSS | Industrials | 3.06% | 174,050 | +4,765 | +2.81% | $19,282,999 |
| Kadant Inc. | KAI | Industrials | 3.03% | 72,782 | -2,953 | -3.90% | $19,033,949 |
| Xylem Inc. | XYL | Industrials | 2.74% | 170,310 | -10,740 | -5.93% | $17,247,294 |
| Ryan Specialty Hldngs | RYAN | Financial Services | 2.74% | 465,889 | +743 | +0.16% | $17,237,893 |
| Danaher Corp. | DHR | Healthcare | 2.51% | 71,195 | -2,829 | -3.82% | $15,773,252 |
| Watsco, Inc. | WSO | Industrials | 2.48% | 51,565 | -26,447 | -33.90% | $15,608,210 |
| NexGen Energy Ltd. | NXE | Energy | 1.78% | 1,225,500 | - | - | $11,196,617 |
| Agilent Tech, Inc. | A | Healthcare | 1.77% | 64,550 | -4,950 | -7.12% | $11,122,610 |
| Badger Meter Inc | BMI | Technology | 1.66% | 84,600 | +21,600 | +34.29% | $10,451,484 |
| Waters Corporation | WAT | Healthcare | 1.65% | 23,590 | - | - | $10,365,210 |
| HEICO Corp. | HEI | Industrials | 0.92% | 19,000 | -500 | -2.56% | $5,760,420 |
| Microsoft Corp. | MSFT | Technology | 0.86% | 10,569 | - | - | $5,420,840 |
Showing 30 of 36 holdings in the latest reporting period.