DUDLEY & SHANLEY, INC. Concentrated Active

Location: Palm Beach, FL

CIK: 0000883511 · Show all filings

Period: Q2 2026 (← Previous) (Next →)

Filing Date: Jul 9, 2026

Total Value: $662M (100.0% shares, 0.0% debt)

Holdings (37)

WPM Wheaton Precious Mtls 7.7%

Value $51.07M Shares 454,640 Share Price $112.32 Est. Cost/Share $26.64 Unrealized @ Report Date +321.6%

APH Amphenol Corp. 6.2%

Value $41.34M Shares 234,451 Share Price $176.32 Est. Cost/Share $49.89 Unrealized @ Report Date +253.4%

AME Ametek Inc. 5.1%

Value $33.81M Shares 139,731 Share Price $241.94 Est. Cost/Share $125.21 Unrealized @ Report Date +93.2%

V Visa Inc. 5.0%

Value $33.27M Shares 96,971 Share Price $343.09 Est. Cost/Share $208.01 Unrealized @ Report Date +64.9%

WSO Watsco, Inc. 4.9%

Value $32.51M Shares 78,012 Share Price $416.73 Est. Cost/Share $369.69 Unrealized @ Report Date +12.7%

— Aon plc 4.4%

Value $29.46M Shares 88,807 Share Price $331.69 Est. Cost/Share $172.84 Unrealized @ Report Date —

ECL Ecolab Inc. 4.4%

Value $29.17M Shares 104,693 Share Price $278.61 Est. Cost/Share $96.52 Unrealized @ Report Date +188.7%

SCI Service Corp. Int'l 4.2%

Value $27.94M Shares 367,783 Share Price $75.96 Est. Cost/Share $38.46 Unrealized @ Report Date +97.5%

ADI Analog Devices 4.0%

Value $26.69M Shares 67,200 Share Price $397.17 Est. Cost/Share $184.36 Unrealized @ Report Date +115.4%

FERG Ferguson Enterprises 3.7%

Value $24.74M Shares 104,225 Share Price $237.33 Est. Cost/Share $206.45 Unrealized @ Report Date +15.0%

DCI Donaldson Co., Inc. 3.7%

Value $24.45M Shares 272,330 Share Price $89.77 Est. Cost/Share $72.73 Unrealized @ Report Date +23.4%

KAI Kadant Inc. 3.6%

Value $23.8M Shares 75,735 Share Price $314.23 Est. Cost/Share $302.84 Unrealized @ Report Date +3.8%

FAST Fastenal Co. 3.4%

Value $22.69M Shares 472,440 Share Price $48.03 Est. Cost/Share $45.12 Unrealized @ Report Date +6.5%

AWK Amer. Water Works 3.4%

Value $22.28M Shares 169,344 Share Price $131.58 Est. Cost/Share $136.82 Unrealized @ Report Date -3.8%

SCHW Charles Schwab 3.4%

Value $22.23M Shares 240,933 Share Price $92.27 Est. Cost/Share $65.84 Unrealized @ Report Date +40.1%

FSS Federal Signal Corp 3.3%

Value $21.75M Shares 169,285 Share Price $128.49 Est. Cost/Share $114.09 Unrealized @ Report Date +12.6%

XYL Xylem Inc. 3.2%

Value $21.4M Shares 181,050 Share Price $118.21 Est. Cost/Share $122.42 Unrealized @ Report Date -3.4%

ROL Rollins, Inc. 3.1%

Value $20.69M Shares 495,655 Share Price $41.74 Est. Cost/Share $40.64 Unrealized @ Report Date +2.7%

KRNT Kornit Digital 3.1%

Value $20.4M Shares 1,255,265 Share Price $16.25 Est. Cost/Share $17.65 Unrealized @ Report Date -7.9%

ALSN Allison Transmission 2.8%

Value $18.61M Shares 165,037 Share Price $112.74 Est. Cost/Share $38.61 Unrealized @ Report Date +192.0%

RYAN Ryan Specialty Hldngs 2.7%

Value $17.56M Shares 465,146 Share Price $37.76 Est. Cost/Share $38.70 Unrealized @ Report Date -2.4%

PGR Progressive Corp. 2.2%

Value $14.48M Shares 66,280 Share Price $218.45 Est. Cost/Share $68.01 Unrealized @ Report Date +221.2%

DHR Danaher Corp. 2.1%

Value $14.1M Shares 74,024 Share Price $190.48 Est. Cost/Share $171.58 Unrealized @ Report Date +11.0%

NXE NexGen Energy Ltd. 1.7%

Value $11.51M Shares 1,225,500 Share Price $9.39 Est. Cost/Share $1.31 Unrealized @ Report Date +617.1%

BMI Badger Meter Inc 1.4%

Value $9.348M Shares 63,000 Share Price $148.38 Est. Cost/Share $172.42 Unrealized @ Report Date -13.9%

A Agilent Tech, Inc. 1.4%

Value $9.232M Shares 69,500 Share Price $132.83 Est. Cost/Share $130.59 Unrealized @ Report Date +1.7%

WAT Waters Corporation 1.3%

Value $8.847M Shares 23,590 Share Price $375.04 Est. Cost/Share $341.59 Unrealized @ Report Date +9.8%

HEI HEICO Corp. 1.0%

Value $6.946M Shares 19,500 Share Price $356.19 Est. Cost/Share $167.85 Unrealized @ Report Date +112.2%

FISV Fiserv Inc. 0.8%

Value $5.423M Shares 110,558 Share Price $49.05 Est. Cost/Share $64.10 Unrealized @ Report Date -23.5%

GNRC Generac Holdings 0.7%

Value $4.729M Shares 16,150 Share Price $292.81 Est. Cost/Share $113.74 Unrealized @ Report Date +157.4%

PFE Pfizer, Inc. 0.6%

Value $3.973M Shares 165,000 Share Price $24.08 Est. Cost/Share $26.16 Unrealized @ Report Date -7.9%

MSFT Microsoft Corp. 0.6%

Value $3.942M Shares 10,569 Share Price $373.02 Est. Cost/Share $90.57 Unrealized @ Report Date +311.8%

ORA Ormat Technologies 0.4%

Value $2.842M Shares 26,100 Share Price $108.90 Est. Cost/Share $68.71 Unrealized @ Report Date +58.5%

ROP Roper Technologies 0.1%

Value $677K Shares 2,000 Share Price $338.39 Est. Cost/Share $433.92 Unrealized @ Report Date -22.0%

VNOM Viper Energy Inc 0.0%

Value $326K Shares 7,700 Share Price $42.40 Est. Cost/Share $37.86 Unrealized @ Report Date +12.0%

SASKF ATHA Energy Corp. 0.0%

Value $51,991 Shares 74,500 Share Price $0.70 Est. Cost/Share $0.61 Unrealized @ Report Date +16.9%

STLNF Stallion Uranium Corp 0.0%

Value $25,377 Shares 180,000 Share Price $0.14 Est. Cost/Share $0.30 Unrealized @ Report Date —

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
WPM	Wheaton Precious Mtls	454,640	$51.07M	7.7%	$112.32	$26.64	+321.6%	COM	962879102
APH	Amphenol Corp.	234,451	$41.34M	6.2%	$176.32	$49.89	+253.4%	COM	032095101
AME	Ametek Inc.	139,731	$33.81M	5.1%	$241.94	$125.21	+93.2%	COM	031100100
V	Visa Inc.	96,971	$33.27M	5.0%	$343.09	$208.01	+64.9%	COM	92826C839
WSO	Watsco, Inc.	78,012	$32.51M	4.9%	$416.73	$369.69	+12.7%	COM	942622200
—	Aon plc	88,807	$29.46M	4.4%	$331.69	$172.84	—	COM	g0403h108
ECL	Ecolab Inc.	104,693	$29.17M	4.4%	$278.61	$96.52	+188.7%	COM	278865100
SCI	Service Corp. Int'l	367,783	$27.94M	4.2%	$75.96	$38.46	+97.5%	COM	817565104
ADI	Analog Devices	67,200	$26.69M	4.0%	$397.17	$184.36	+115.4%	COM	032654105
FERG	Ferguson Enterprises	104,225	$24.74M	3.7%	$237.33	$206.45	+15.0%	COM	31488V107
DCI	Donaldson Co., Inc.	272,330	$24.45M	3.7%	$89.77	$72.73	+23.4%	COM	257651109
KAI	Kadant Inc.	75,735	$23.8M	3.6%	$314.23	$302.84	+3.8%	COM	48282T104
FAST	Fastenal Co.	472,440	$22.69M	3.4%	$48.03	$45.12	+6.5%	COM	311900104
AWK	Amer. Water Works	169,344	$22.28M	3.4%	$131.58	$136.82	-3.8%	COM	030420103
SCHW	Charles Schwab	240,933	$22.23M	3.4%	$92.27	$65.84	+40.1%	COM	808513105
FSS	Federal Signal Corp	169,285	$21.75M	3.3%	$128.49	$114.09	+12.6%	COM	313855108
XYL	Xylem Inc.	181,050	$21.4M	3.2%	$118.21	$122.42	-3.4%	COM	98419M100
ROL	Rollins, Inc.	495,655	$20.69M	3.1%	$41.74	$40.64	+2.7%	COM	775711104
KRNT	Kornit Digital	1,255,265	$20.4M	3.1%	$16.25	$17.65	-7.9%	COM	M6372Q113
ALSN	Allison Transmission	165,037	$18.61M	2.8%	$112.74	$38.61	+192.0%	COM	01973R101
RYAN	Ryan Specialty Hldngs	465,146	$17.56M	2.7%	$37.76	$38.70	-2.4%	COM	78351F107
PGR	Progressive Corp.	66,280	$14.48M	2.2%	$218.45	$68.01	+221.2%	COM	743315103
DHR	Danaher Corp.	74,024	$14.1M	2.1%	$190.48	$171.58	+11.0%	COM	235851102
NXE	NexGen Energy Ltd.	1,225,500	$11.51M	1.7%	$9.39	$1.31	+617.1%	COM	65340P106
BMI	Badger Meter Inc	63,000	$9.348M	1.4%	$148.38	$172.42	-13.9%	COM	056525108
A	Agilent Tech, Inc.	69,500	$9.232M	1.4%	$132.83	$130.59	+1.7%	COM	00846U101
WAT	Waters Corporation	23,590	$8.847M	1.3%	$375.04	$341.59	+9.8%	COM	941848103
HEI	HEICO Corp.	19,500	$6.946M	1.0%	$356.19	$167.85	+112.2%	COM	422806109
FISV	Fiserv Inc.	110,558	$5.423M	0.8%	$49.05	$64.10	-23.5%	COM	337738108
GNRC	Generac Holdings	16,150	$4.729M	0.7%	$292.81	$113.74	+157.4%	COM	368736104
PFE	Pfizer, Inc.	165,000	$3.973M	0.6%	$24.08	$26.16	-7.9%	COM	717081103
MSFT	Microsoft Corp.	10,569	$3.942M	0.6%	$373.02	$90.57	+311.8%	COM	594918104
ORA	Ormat Technologies	26,100	$2.842M	0.4%	$108.90	$68.71	+58.5%	COM	686688102
ROP	Roper Technologies	2,000	$677K	0.1%	$338.39	$433.92	-22.0%	COM	776696106
VNOM	Viper Energy Inc	7,700	$326K	0.0%	$42.40	$37.86	+12.0%	COM	64361Q101
SASKF	ATHA Energy Corp.	74,500	$51,991	0.0%	$0.70	$0.61	+16.9%	COM	046824108
STLNF	Stallion Uranium Corp	180,000	$25,377	0.0%	$0.14	$0.30	—	COM	852919208