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DUDLEY & SHANLEY, INC.

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13F filer, CIK 883511, PALM BEACH, FL

DUDLEY & SHANLEY, INC. reported $647,562,638 across 37 holdings for the quarter ended 2024-12-31, in a 13F-HR filed 2025-01-03. Its ten largest share positions make up 51.48% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000883511-25-000001

Period
2024-12-31
Reported value
$648M
Holdings
37
Top 10 weight
51.48%
New
1
Sold out
0

Largest buys vs the previous quarter

SecurityShares changeApprox. value
FERGnew+109,375$19M
DCIadded+263,600$17.8M
ROLadded+11,200$519K
KRNTadded+12,500$387K
APHadded+580$40.3K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
WPMreduced-92,183-$5.18M
FISVreduced-24,243-$4.98M
DOXreduced-36,445-$3.1M
AONreduced-4,613-$1.66M
Areduced-6,700-$900K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q4 2024

Share positions as resolved from 13F-HR 0000883511-25-000001, largest first. % of portfolio is the value over $647,562,638, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
WPMWHEATON PRECIOUS METALS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 1,169,040 shares 1,169,040$65.7M10.15%-92,183Timeline
FISVFISERV INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 176,623 shares 176,623$36.3M5.6%-24,243Timeline
AONAON PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 93,827 shares 93,827$33.7M5.2%-4,613Timeline
VVISA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 97,636 shares 97,636$30.9M4.77%-50Timeline
APHAMPHENOL CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 438,950 shares 438,950$30.5M4.71%+580Timeline
SCISERVICE CORP INTLQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 373,053 shares 373,053$29.8M4.6%-8,267Timeline
RYANRYAN SPECIALTY HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 461,381 shares 461,381$29.6M4.57%-240Timeline
ADIANALOG DEVICES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 122,656 shares 122,656$26.1M4.02%0Timeline
WSTWEST PHARMACEUTICAL SVSC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 78,661 shares 78,661$25.8M3.98%-2,470Timeline
AMEAMETEK INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 139,316 shares 139,316$25.1M3.88%-118Timeline
DHRDANAHER CORP DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 109,257 shares 109,257$25.1M3.87%0Timeline
ECLECOLAB INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 104,853 shares 104,853$24.6M3.79%-100Timeline
AVTRAVANTOR INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 1,086,127 shares 1,086,127$22.9M3.53%0Timeline
ROLROLLINS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 455,750 shares 455,750$21.1M3.26%+11,200Timeline
PGRPROGRESSIVE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 84,460 shares 84,460$20.2M3.13%-50Timeline
AWKAMERICAN WTR WKS CO INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 160,894 shares 160,894$20M3.09%0Timeline
DOXAMDOCS LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 225,381 shares 225,381$19.2M2.96%-36,445Timeline
FERGFERGUSON ENTERPRISES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 109,375 shares 109,375$19M2.93%newTimeline
DCIDONALDSON INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 268,750 shares 268,750$18.1M2.8%+263,600Timeline
SCHWCHARLES SCHWAB CORP (THE)Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 240,383 shares 240,383$17.8M2.75%0Timeline
ALSNALLISON TRANSMISSION HLDGS IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 164,097 shares 164,097$17.7M2.74%0Timeline
FELEFRANKLIN ELEC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 181,361 shares 181,361$17.7M2.73%0Timeline
WSOWATSCO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 25,403 shares 25,403$12M1.86%0Timeline
KAIKADANT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 32,500 shares 32,500$11.2M1.73%0Timeline
KRNTKORNIT DIGITAL LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 272,025 shares 272,025$8.42M1.3%+12,500Timeline
NXENEXGEN ENERGY LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 1,236,500 shares 1,236,500$8.15M1.26%0Timeline
AAGILENT TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 49,200 shares 49,200$6.61M1.02%-6,700Timeline
GRIDFIRST TR EXCHANGE-TRADED FDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 46,900 shares 46,900$5.6M0.86%0Timeline
MSFTMICROSOFT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 11,554 shares 11,554$4.87M0.75%-30Timeline
HEIHEICO CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 19,550 shares 19,550$4.65M0.72%0Timeline
GNRCGENERAC HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 19,650 shares 19,650$3.05M0.47%-4,300Timeline
PHOINVESCO EXCHANGE TRADED FD TQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 32,780 shares 32,780$2.16M0.33%0Timeline
ORAORMAT TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 30,900 shares 30,900$2.09M0.32%0Timeline
ROPROPER TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 2,550 shares 2,550$1.33M0.2%0Timeline
ENPHENPHASE ENERGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 6,800 shares 6,800$467K0.07%0Timeline
OCULOCULAR THERAPEUTIX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 16,200 shares 16,200$138K0.02%0Timeline
SASKFATHA ENERGY CORP (CANADA)Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: restricted; 2024Q4: 19,000 shares 19,000$7.4K<0.01%0Timeline

How Q4 2024 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0000883511-25-000001 base2025-01-03acceptance time not in the bulk data set