D&
Dudley & Shanley, Inc.
13F filer · CIK 0000883511Reported Jul 9, 2026
Net buyer this quarter
13F portfolio value$662MU.S. long equity reported on 13F
Positions361 new · 0 closed
Net flow last quarter+$27.4MBuys minus sells
Top 10 positions weight49.8%Concentration
Holdings
13F · last 4 quarters freeScroll for earlier quarters
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026Reported Jul 9, 202636 positions | |||||
| $51.1M | 7.71% | 0.10% | -1.0% | Q2 2020 | |
| $41.3M | 6.24% | 0.02% | -4.6% | Q1 2022 | |
| $33.8M | 5.10% | 0.06% | 0.0% | Q1 2018 | |
| $33.3M | 5.02% | 0.01% | -0.2% | Q1 2018 | |
| $32.5M | 4.91% | Not reported | +40.1% | Q1 2015 | |
| $29.5M | 4.45% | 0.04% | 0.0% | Q3 2013 | |
| $29.2M | 4.40% | 0.04% | -0.3% | Q2 2013 | |
| $27.9M | 4.22% | 0.27% | 0.0% | Q1 2015 | |
| $26.7M | 4.03% | 0.01% | -29.4% | Q3 2016 | |
| $24.7M | 3.73% | 0.05% | +0.1% | Q4 2024 | |
| $24.4M | 3.69% | 0.23% | +0.7% | Q1 2024 | |
| $23.8M | 3.59% | 0.64% | Not reported | Q1 2022 | |
| $22.7M | 3.43% | 0.04% | +160.7% | Q2 2013 | |
| $22.3M | 3.36% | 0.09% | +0.2% | Q1 2023 | |
| $22.2M | 3.36% | 0.01% | Not reported | Q1 2024 | |
| $21.8M | 3.28% | 0.28% | +169.9% | Q1 2026 | |
| $21.4M | 3.23% | 0.08% | +124.0% | Q2 2013 | |
| $20.7M | 3.12% | 0.10% | +8.8% | Q2 2023 | |
| $20.4M | 3.08% | 2.71% | +0.1% | Q4 2022 | |
| $18.6M | 2.81% | 0.20% | +0.3% | Q1 2022 | |
| $17.6M | 2.65% | 0.42% | -3.1% | Q1 2022 | |
| $14.5M | 2.19% | 0.01% | Not reported | Q2 2020 | |
| $14.1M | 2.13% | 0.01% | -35.6% | Q2 2020 | |
| $11.5M | 1.74% | 0.19% | +0.1% | Q1 2015 | |
| $9.35M | 1.41% | 0.22% | -48.4% | Q4 2025 | |
| $9.23M | 1.39% | 0.02% | +25.9% | Q3 2024 | |
| $8.85M | 1.34% | 0.02% | +101.3% | Q2 2013 | |
| $6.95M | 1.05% | 0.04% | Not reported | Q1 2022 | |
| $5.42M | 0.82% | 0.02% | -23.2% | Q2 2013 | |
| $4.73M | 0.71% | 0.03% | -17.8% | Q4 2022 | |
| $3.97M | 0.60% | 0.00% | Not reported | Q1 2022 | |
| $3.94M | 0.60% | 0.00% | Not reported | Q2 2013 | |
| $2.84M | 0.43% | 0.04% | -6.8% | Q1 2018 | |
| $677K | 0.10% | 0.00% | Not reported | Q1 2018 | |
| VEVNOMViper Energy, Inc. | $326K | 0.05% | Not reported | Not reported | Q4 2025 |
| SUSTLNFStallion Uranium Corp. | $25.4K | 0.00% | Not reported | Not reported | Q3 2025 |
| Q1 2026Reported Apr 8, 202635 positions | |||||
| $60.2M | 9.85% | 0.10% | -31.3% | Q2 2020 | |
| $31.1M | 5.08% | 0.02% | -13.1% | Q1 2022 | |
| $30.3M | 4.96% | 0.27% | Not reported | Q1 2015 | |
| $30.3M | 4.95% | 0.02% | -23.9% | Q3 2016 | |
| $30M | 4.90% | 0.06% | 0.0% | Q1 2018 | |
| $29.4M | 4.80% | 0.01% | -0.1% | Q1 2018 | |
| $28.7M | 4.69% | 0.04% | Not reported | Q3 2013 | |
| $27.9M | 4.57% | 0.04% | -0.1% | Q2 2013 | |
| $24.3M | 3.98% | 0.09% | Not reported | Q2 2023 | |
| $24.3M | 3.98% | 0.05% | Not reported | Q4 2024 | |
| $23M | 3.76% | 0.09% | Not reported | Q1 2023 | |
| $22.9M | 3.75% | 0.23% | Not reported | Q1 2024 | |
| $22.6M | 3.70% | 0.01% | Not reported | Q1 2024 | |
| $22.1M | 3.62% | 0.64% | +37.4% | Q1 2022 | |
| $21.8M | 3.56% | 0.02% | Not reported | Q2 2020 | |
| $20.3M | 3.31% | Not reported | Not reported | Q1 2015 | |
| $19.3M | 3.15% | 0.20% | Not reported | Q1 2022 | |
| $18.6M | 3.04% | 0.42% | +47.7% | Q4 2025 | |
| $18.4M | 3.01% | 2.71% | +39.1% | Q4 2022 | |
| $16.2M | 2.65% | 0.44% | +0.5% | Q1 2022 | |
| $14.2M | 2.32% | 0.19% | -0.9% | Q1 2015 | |
| $13.1M | 2.15% | 0.01% | Not reported | Q2 2020 | |
| $9.66M | 1.58% | 0.03% | Not reported | Q2 2013 | |
| $8.41M | 1.38% | 0.02% | +2435.0% | Q2 2013 | |
| $8.03M | 1.31% | 0.03% | Not reported | Q2 2013 | |
| $6.78M | 1.11% | 0.10% | New | Q1 2026 | |
| $6.29M | 1.03% | 0.02% | Not reported | Q3 2024 | |
| $5.35M | 0.87% | 0.04% | Not reported | Q1 2022 | |
| $3.91M | 0.64% | 0.00% | Not reported | Q2 2013 | |
| $3.84M | 0.63% | 0.03% | Not reported | Q4 2022 | |
| $3.49M | 0.57% | 0.01% | Not reported | Q2 2013 | |
| $3.13M | 0.51% | 0.05% | Not reported | Q1 2018 | |
| $708K | 0.12% | 0.00% | -88.5% | Q1 2018 | |
| VEVNOMViper Energy, Inc. | $362K | 0.06% | Not reported | Not reported | Q4 2025 |
| SUSTLNFStallion Uranium Corp. | $60.6K | 0.01% | Not reported | +111.8% | Q3 2025 |
| Q4 2025Reported Jan 9, 202632 positions | |||||
| $78.6M | 12.63% | 0.15% | -3.9% | Q2 2020 | |
| $38.2M | 6.14% | 0.02% | -10.6% | Q1 2022 | |
| $34.1M | 5.48% | 0.01% | 0.0% | Q1 2018 | |
| $33.9M | 5.45% | 0.03% | 0.0% | Q3 2016 | |
| $31.3M | 5.04% | 0.04% | +0.1% | Q3 2013 | |
| $28.7M | 4.61% | 0.06% | 0.0% | Q1 2018 | |
| $28.7M | 4.61% | 0.26% | -0.5% | Q1 2015 | |
| $27.6M | 4.43% | 0.04% | +0.1% | Q2 2013 | |
| $27.4M | 4.40% | 0.09% | 0.0% | Q2 2023 | |
| $26.3M | 4.23% | 0.02% | -0.1% | Q2 2020 | |
| $24.7M | 3.96% | 0.43% | +3.4% | Q1 2022 | |
| $24.1M | 3.87% | 0.01% | 0.0% | Q1 2024 | |
| $24M | 3.85% | 0.23% | -0.1% | Q1 2024 | |
| $23.2M | 3.73% | 0.05% | +38.0% | Q4 2024 | |
| $22.1M | 3.55% | 0.09% | -0.1% | Q1 2023 | |
| $18.8M | 3.02% | Not reported | +41.5% | Q1 2015 | |
| $16.1M | 2.59% | 0.20% | 0.0% | Q1 2022 | |
| $15.7M | 2.52% | 0.47% | -0.1% | Q1 2022 | |
| $15.1M | 2.43% | 0.01% | +3.2% | Q2 2020 | |
| $14.4M | 2.32% | 0.22% | New | Q4 2025 | |
| $13M | 2.08% | 1.95% | -28.4% | Q4 2022 | |
| $11.4M | 1.83% | 0.19% | Not reported | Q1 2015 | |
| $9.67M | 1.55% | 0.03% | -17.7% | Q2 2013 | |
| $7.77M | 1.25% | 0.02% | +584.5% | Q1 2018 | |
| $7.51M | 1.21% | 0.02% | Not reported | Q3 2024 | |
| $6.31M | 1.01% | 0.04% | Not reported | Q1 2022 | |
| $5.11M | 0.82% | 0.00% | -2.6% | Q2 2013 | |
| $3.09M | 0.50% | 0.05% | -7.3% | Q1 2018 | |
| $2.68M | 0.43% | 0.03% | Not reported | Q4 2022 | |
| VEVNOMViper Energy, Inc. | $297K | 0.05% | Not reported | New | Q4 2025 |
| $287K | 0.05% | 0.00% | Not reported | Q2 2013 | |
| SUSTLNFStallion Uranium Corp. | $20.2K | 0.00% | Not reported | +183.3% | Q3 2025 |
| Q3 2025Reported Oct 8, 202531 positions | |||||
| $77.8M | 12.52% | 0.15% | -8.9% | Q2 2020 | |
| $39.2M | 6.30% | 0.03% | -26.0% | Q1 2022 | |
| $33.2M | 5.34% | 0.01% | 0.0% | Q1 2018 | |
| $31.6M | 5.09% | 0.04% | +0.1% | Q3 2013 | |
| $30.7M | 4.95% | 0.26% | +0.1% | Q1 2015 | |
| $30.7M | 4.94% | 0.03% | +1.6% | Q3 2016 | |
| $28.8M | 4.63% | 0.04% | Not reported | Q2 2013 | |
| $26.8M | 4.31% | 0.09% | -0.3% | Q2 2023 | |
| $26.3M | 4.23% | 0.06% | +0.1% | Q1 2018 | |
| $26M | 4.19% | 0.42% | 0.0% | Q1 2022 | |
| $23.5M | 3.79% | 0.09% | +4.9% | Q1 2023 | |
| $23M | 3.70% | 0.01% | 0.0% | Q1 2024 | |
| $22.8M | 3.67% | 0.02% | +4.9% | Q2 2020 | |
| $22.6M | 3.63% | 0.03% | +3.3% | Q2 2013 | |
| $22.1M | 3.56% | 0.23% | +29.4% | Q1 2024 | |
| $20.2M | 3.25% | 0.23% | +0.3% | Q4 2022 | |
| $17M | 2.73% | 2.73% | +97.5% | Q4 2022 | |
| $17M | 2.73% | 0.04% | Not reported | Q4 2024 | |
| $16.4M | 2.64% | 0.47% | Not reported | Q1 2022 | |
| $15.9M | 2.56% | Not reported | -1.2% | Q1 2015 | |
| $15.9M | 2.55% | 0.01% | Not reported | Q2 2020 | |
| $14M | 2.25% | 0.20% | Not reported | Q1 2022 | |
| $11.1M | 1.78% | 0.22% | -0.2% | Q1 2015 | |
| $7.08M | 1.14% | 0.02% | Not reported | Q3 2024 | |
| $6.29M | 1.01% | 0.04% | -0.3% | Q1 2022 | |
| $5.62M | 0.90% | 0.00% | Not reported | Q2 2013 | |
| $3.29M | 0.53% | 0.03% | Not reported | Q4 2022 | |
| $2.91M | 0.47% | 0.05% | +0.7% | Q1 2018 | |
| $1.27M | 0.20% | 0.00% | Not reported | Q1 2018 | |
| $152K | 0.02% | 0.01% | -20.7% | Q2 2024 | |
| SUSTLNFStallion Uranium Corp. | $9.6K | 0.00% | Not reported | New | Q3 2025 |
Premium opens every quarter this fund has filed