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Disclosery

13F-HR filed by DUDLEY & SHANLEY, INC.

DUDLEY & SHANLEY, INC. filed this 13F-HR for the quarter ended 2026-03-31, filed 2026-04-08, with 37 holding rows worth $611,236,912.

Accession
0000883511-26-000002
Filer
CIK 883511
Filed
2026-04-08
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q1 2026

A holdings report, 38 entries on the cover page, a total value of $611,236,912 stated on the cover page (in dollars after the unit check, H1), rows summing to $611,236,912 with VALUE read as dollars as filed, 13F file number 028-03037. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
WHEATON PRECIOUS METALS CORP COM962879102Stock459,385$60,184,029dollars as filed
AMPHENOL CORP NEW032095101COM245,751$31,050,639dollars as filed
SERVICE CORP INTL COM817565104Stock367,633$30,333,399dollars as filed
Analog Devices,Inc.032654105COM95,121$30,261,795dollars as filed
AMETEK INC COM031100100Stock139,746$29,955,953dollars as filed
Visa Inc92826C839COM97,166$29,367,452dollars as filed
AON PLC SHS CL AG0403H108Stock88,782$28,657,054dollars as filed
ECOLAB INC COM278865100Stock105,008$27,934,228dollars as filed
ROLLINS INC COM775711104Stock455,730$24,340,539dollars as filed
FERGUSON ENTERPRISES INC COMMON STOCK NEW31488V107Stock104,175$24,299,860dollars as filed
AMERICAN WTR WKS CO INC NEW COM030420103Stock169,044$23,005,198dollars as filed
DONALDSON INC COM257651109Stock270,405$22,949,272dollars as filed
Charles Schwab Corp808513105COM240,933$22,642,883dollars as filed
KADANT INC48282T104COM75,735$22,141,127dollars as filed
Danaher Corporation235851102COM114,881$21,781,438dollars as filed
WATSCO INC COM942622200Stock55,692$20,260,193dollars as filed
ALLISON TRANSMISSION HLDGS I01973R101COM164,597$19,267,725dollars as filed
BADGER METER INC COM056525108Stock122,150$18,609,552dollars as filed
KORNIT DIGITAL LTDM6372Q113SHS1,254,615$18,392,656dollars as filed
RYAN SPECIALTY HOLDINGS INC CL A78351F107Stock480,021$16,195,909dollars as filed
NEXGEN ENERGY LTD COM65340P106Stock1,224,500$14,204,200dollars as filed
Progressive Corporation743315103COM66,280$13,139,347dollars as filed
XYLEM INC COM98419M100Stock80,830$9,659,185dollars as filed
FASTENAL CO COM311900104Stock181,250$8,410,000dollars as filed
FISERV INC337738108COM143,923$8,030,903dollars as filed
FEDERAL SIGNAL CORP313855108COM62,730$6,783,622dollars as filed
AGILENT TECHNOLOGIES INC COM00846U101Stock55,200$6,291,696dollars as filed
HEICO CORP NEW COM422806109Stock19,500$5,346,900dollars as filed
Microsoft Corp594918104COM10,569$3,912,327dollars as filed
GENERAC HLDGS INC368736104COM19,650$3,838,234dollars as filed
WATERS CORP COM941848103Stock11,720$3,490,216dollars as filed
ORMAT TECHNOLOGIES INC686688102COM28,000$3,133,760dollars as filed
INVESCO EXCHANGE TRADED FD T46137V142WATER RES ETF32,780$2,191,671dollars as filed
ROPER TECHNOLOGIES INC COM776696106Stock2,000$707,720dollars as filed
VIPER ENERGY INC64361Q101CL A7,700$361,823dollars as filed
Stallion Uranium Corp852919208COM180,000$60,628dollars as filed
ATHA Energy Corp.046824108COM74,500$43,779dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0000883511-26-000002this filing2026-04-08acceptance time not in the bulk data set