DUDLEY & SHANLEY, INC. Long-Term Concentrated

CIK: 0000883511 · Show all filings

Period: Q1 2025 (← Previous) (Next →)

Filing Date: Apr 9, 2025

Total Value ($000): $635,078 (100.0% shares, 0.0% debt)

Holdings (36)

WPM Wheaton Precious Mtls 12.4%

Value ($000) $78,485 Shares 1,011,010 Est. Cost $26.64 Unrealized +149.4%

— Aon plc 5.6%

Value ($000) $35,374 Shares 88,637 Est. Cost $172.84 Unrealized —

FISV Fiserv Inc. 5.4%

Value ($000) $34,554 Shares 156,474 Est. Cost $51.63 Unrealized +324.0%

RYAN Ryan Specialty Hldngs 5.4%

Value ($000) $34,082 Shares 461,381 Est. Cost $38.14 Unrealized +78.2%

V Visa Inc. 5.4%

Value ($000) $34,081 Shares 97,246 Est. Cost $208.01 Unrealized +61.7%

SCI Service Corp. Int'l 4.7%

Value ($000) $29,545 Shares 368,393 Est. Cost $38.46 Unrealized +104.6%

APH Amphenol Corp. 4.5%

Value ($000) $28,790 Shares 438,940 Est. Cost $49.89 Unrealized +35.8%

ECL Ecolab Inc. 4.2%

Value ($000) $26,585 Shares 104,863 Est. Cost $96.52 Unrealized +158.6%

ADI Analog Devices 3.9%

Value ($000) $24,756 Shares 122,756 Est. Cost $183.47 Unrealized +16.0%

ROL Rollins, Inc. 3.9%

Value ($000) $24,643 Shares 456,100 Est. Cost $39.72 Unrealized +25.1%

AME Ametek Inc. 3.8%

Value ($000) $24,001 Shares 139,426 Est. Cost $125.21 Unrealized +44.3%

PGR Progressive Corp. 3.8%

Value ($000) $23,909 Shares 84,480 Est. Cost $63.46 Unrealized +286.5%

AWK Amer. Water Works 3.7%

Value ($000) $23,753 Shares 161,014 Est. Cost $136.66 Unrealized -5.5%

DOX Amdocs Ltd. 3.5%

Value ($000) $22,455 Shares 245,411 Est. Cost $83.79 Unrealized +1.7%

DHR Danaher Corp. 3.5%

Value ($000) $22,415 Shares 109,342 Est. Cost $170.27 Unrealized +27.4%

AVTR Avantor Inc. 3.0%

Value ($000) $19,316 Shares 1,191,617 Est. Cost $22.95 Unrealized -17.5%

SCHW Charles Schwab 3.0%

Value ($000) $18,831 Shares 240,563 Est. Cost $65.84 Unrealized +18.0%

FELE Franklin Elec. Co., Inc. 2.6%

Value ($000) $16,458 Shares 175,311 Est. Cost $87.79 Unrealized +12.0%

DCI Donaldson Co., Inc. 2.6%

Value ($000) $16,427 Shares 244,965 Est. Cost $72.11 Unrealized -5.6%

FERG Ferguson Enterprises 2.6%

Value ($000) $16,203 Shares 101,125 Est. Cost $194.48 Unrealized -12.3%

ALSN Allison Transmission 2.5%

Value ($000) $15,714 Shares 164,247 Est. Cost $38.61 Unrealized +171.9%

WSO Watsco, Inc. 2.0%

Value ($000) $12,925 Shares 25,428 Est. Cost $295.85 Unrealized +66.6%

KAI Kadant Inc. 1.7%

Value ($000) $10,960 Shares 32,530 Est. Cost $284.79 Unrealized +27.0%

KRNT Kornit Digital 1.0%

Value ($000) $6,128 Shares 321,150 Est. Cost $21.29 Unrealized +22.8%

A Agilent Tech, Inc. 0.9%

Value ($000) $5,755 Shares 49,200 Est. Cost $135.59 Unrealized -1.2%

NXE NexGen Energy Ltd. 0.9%

Value ($000) $5,552 Shares 1,236,500 Est. Cost $1.31 Unrealized +351.3%

GRID First Trust Cln Edge 0.8%

Value ($000) $5,306 Shares 46,900 Est. Cost $105.12 Unrealized —

HEI HEICO Corp. 0.8%

Value ($000) $5,224 Shares 19,550 Est. Cost $167.85 Unrealized +45.1%

MSFT Microsoft Corp. 0.6%

Value ($000) $4,074 Shares 10,854 Est. Cost $90.57 Unrealized +347.2%

GNRC Generac Holdings 0.4%

Value ($000) $2,489 Shares 19,650 Est. Cost $113.74 Unrealized +26.1%

ORA Ormat Technologies 0.3%

Value ($000) $2,123 Shares 30,000 Est. Cost $68.71 Unrealized -1.9%

PHO Invesco Water ETF 0.3%

Value ($000) $2,115 Shares 32,780 Est. Cost $53.35 Unrealized —

ROP Roper Technologies 0.2%

Value ($000) $1,503 Shares 2,550 Est. Cost $268.84 Unrealized +107.4%

— Enphase Energy, Inc. 0.1%

Value ($000) $422 Shares 6,800 Est. Cost $124.16 Unrealized —

OCUL Ocular Therapeutix 0.0%

Value ($000) $119 Shares 16,200 Est. Cost $6.17 Unrealized +24.5%

SASKF ATHA Energy Corp. 0.0%

Value ($000) $6 Shares 19,000 Est. Cost $0.77 Unrealized -54.4%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
WPM	Wheaton Precious Mtls	1,011,010	$78,485	12.4%	$26.64	+149.4%	COM	962879102
—	Aon plc	88,637	$35,374	5.6%	$172.84	—	COM	g0403h108
FISV	Fiserv Inc.	156,474	$34,554	5.4%	$51.63	+324.0%	COM	337738108
RYAN	Ryan Specialty Hldngs	461,381	$34,082	5.4%	$38.14	+78.2%	COM	78351F107
V	Visa Inc.	97,246	$34,081	5.4%	$208.01	+61.7%	COM	92826C839
SCI	Service Corp. Int'l	368,393	$29,545	4.7%	$38.46	+104.6%	COM	817565104
APH	Amphenol Corp.	438,940	$28,790	4.5%	$49.89	+35.8%	COM	032095101
ECL	Ecolab Inc.	104,863	$26,585	4.2%	$96.52	+158.6%	COM	278865100
ADI	Analog Devices	122,756	$24,756	3.9%	$183.47	+16.0%	COM	032654105
ROL	Rollins, Inc.	456,100	$24,643	3.9%	$39.72	+25.1%	COM	775711104
AME	Ametek Inc.	139,426	$24,001	3.8%	$125.21	+44.3%	COM	031100100
PGR	Progressive Corp.	84,480	$23,909	3.8%	$63.46	+286.5%	COM	743315103
AWK	Amer. Water Works	161,014	$23,753	3.7%	$136.66	-5.5%	COM	030420103
DOX	Amdocs Ltd.	245,411	$22,455	3.5%	$83.79	+1.7%	COM	G02602103
DHR	Danaher Corp.	109,342	$22,415	3.5%	$170.27	+27.4%	COM	235851102
AVTR	Avantor Inc.	1,191,617	$19,316	3.0%	$22.95	-17.5%	COM	05352A100
SCHW	Charles Schwab	240,563	$18,831	3.0%	$65.84	+18.0%	COM	808513105
FELE	Franklin Elec. Co., Inc.	175,311	$16,458	2.6%	$87.79	+12.0%	COM	353514102
DCI	Donaldson Co., Inc.	244,965	$16,427	2.6%	$72.11	-5.6%	COM	257651109
FERG	Ferguson Enterprises	101,125	$16,203	2.6%	$194.48	-12.3%	COM	31488V107
ALSN	Allison Transmission	164,247	$15,714	2.5%	$38.61	+171.9%	COM	01973R101
WSO	Watsco, Inc.	25,428	$12,925	2.0%	$295.85	+66.6%	COM	942622200
KAI	Kadant Inc.	32,530	$10,960	1.7%	$284.79	+27.0%	COM	48282T104
KRNT	Kornit Digital	321,150	$6,128	1.0%	$21.29	+22.8%	COM	M6372Q113
A	Agilent Tech, Inc.	49,200	$5,755	0.9%	$135.59	-1.2%	COM	00846U101
NXE	NexGen Energy Ltd.	1,236,500	$5,552	0.9%	$1.31	+351.3%	COM	65340P106
GRID	First Trust Cln Edge	46,900	$5,306	0.8%	$105.12	—	COM	33737A108
HEI	HEICO Corp.	19,550	$5,224	0.8%	$167.85	+45.1%	COM	422806109
MSFT	Microsoft Corp.	10,854	$4,074	0.6%	$90.57	+347.2%	COM	594918104
GNRC	Generac Holdings	19,650	$2,489	0.4%	$113.74	+26.1%	COM	368736104
ORA	Ormat Technologies	30,000	$2,123	0.3%	$68.71	-1.9%	COM	686688102
PHO	Invesco Water ETF	32,780	$2,115	0.3%	$53.35	—	COM	46137V142
ROP	Roper Technologies	2,550	$1,503	0.2%	$268.84	+107.4%	COM	776696106
—	Enphase Energy, Inc.	6,800	$422	0.1%	$124.16	—	COM	29355a107
OCUL	Ocular Therapeutix	16,200	$119	0.0%	$6.17	+24.5%	COM	67576A100
SASKF	ATHA Energy Corp.	19,000	$6	0.0%	$0.77	-54.4%	COM	046824108