DUDLEY & SHANLEY, INC. Concentrated Active

Location: Palm Beach, FL

CIK: 0000883511 · Show all filings

Period: Q4 2025 (← Previous) (Next →)

Filing Date: Jan 9, 2026

Total Value: $622M (100.0% shares, 0.0% debt)

Holdings (33)

WPM Wheaton Precious Mtls 12.6%

Value $78.57M Shares 668,605 Share Price $117.52 Est. Cost/Share $26.64 Unrealized @ Report Date +341.1%

APH Amphenol Corp. 6.1%

Value $38.23M Shares 282,911 Share Price $135.14 Est. Cost/Share $49.89 Unrealized @ Report Date +170.9%

V Visa Inc. 5.5%

Value $34.09M Shares 97,216 Share Price $350.71 Est. Cost/Share $208.01 Unrealized @ Report Date +68.6%

ADI Analog Devices 5.4%

Value $33.91M Shares 125,021 Share Price $271.20 Est. Cost/Share $184.36 Unrealized @ Report Date +47.1%

— Aon plc 5.0%

Value $31.33M Shares 88,782 Share Price $352.88 Est. Cost/Share $172.84 Unrealized @ Report Date —

AME Ametek Inc. 4.6%

Value $28.7M Shares 139,796 Share Price $205.31 Est. Cost/Share $125.21 Unrealized @ Report Date +64.0%

SCI Service Corp. Int'l 4.6%

Value $28.66M Shares 367,633 Share Price $77.97 Est. Cost/Share $38.46 Unrealized @ Report Date +102.8%

ECL Ecolab Inc. 4.4%

Value $27.58M Shares 105,058 Share Price $262.52 Est. Cost/Share $96.52 Unrealized @ Report Date +172.0%

ROL Rollins, Inc. 4.4%

Value $27.35M Shares 455,730 Share Price $60.02 Est. Cost/Share $39.72 Unrealized @ Report Date +51.1%

DHR Danaher Corp. 4.2%

Value $26.3M Shares 114,881 Share Price $228.92 Est. Cost/Share $171.58 Unrealized @ Report Date +33.4%

RYAN Ryan Specialty Hldngs 4.0%

Value $24.66M Shares 477,671 Share Price $51.63 Est. Cost/Share $38.70 Unrealized @ Report Date +33.4%

SCHW Charles Schwab 3.9%

Value $24.07M Shares 240,933 Share Price $99.91 Est. Cost/Share $65.84 Unrealized @ Report Date +51.8%

DCI Donaldson Co., Inc. 3.9%

Value $23.97M Shares 270,405 Share Price $88.66 Est. Cost/Share $72.73 Unrealized @ Report Date +21.6%

FERG Ferguson Enterprises 3.7%

Value $23.19M Shares 104,175 Share Price $222.63 Est. Cost/Share $206.45 Unrealized @ Report Date +7.4%

AWK Amer. Water Works 3.5%

Value $22.06M Shares 169,044 Share Price $130.50 Est. Cost/Share $136.82 Unrealized @ Report Date -4.6%

WSO Watsco, Inc. 3.0%

Value $18.77M Shares 55,692 Share Price $336.95 Est. Cost/Share $356.75 Unrealized @ Report Date -5.6%

ALSN Allison Transmission 2.6%

Value $16.11M Shares 164,597 Share Price $97.90 Est. Cost/Share $38.61 Unrealized @ Report Date +153.6%

KAI Kadant Inc. 2.5%

Value $15.71M Shares 55,120 Share Price $285.02 Est. Cost/Share $295.94 Unrealized @ Report Date -3.8%

PGR Progressive Corp. 2.4%

Value $15.09M Shares 66,280 Share Price $227.72 * Est. Cost/Share $68.01 Unrealized @ Report Date +214.8%

BMI Badger Meter Inc 2.3%

Value $14.42M Shares 82,695 Share Price $174.41 Est. Cost/Share $179.79 Unrealized @ Report Date -3.0%

KRNT Kornit Digital 2.1%

Value $12.97M Shares 901,960 Share Price $14.38 Est. Cost/Share $18.83 Unrealized @ Report Date -23.6%

NXE NexGen Energy Ltd. 1.8%

Value $11.38M Shares 1,235,150 Share Price $9.21 Est. Cost/Share $1.31 Unrealized @ Report Date +602.6%

FISV Fiserv Inc. 1.6%

Value $9.667M Shares 143,923 Share Price $67.17 Est. Cost/Share $64.10 Unrealized @ Report Date +4.8%

ROP Roper Technologies 1.2%

Value $7.77M Shares 17,455 Share Price $445.13 Est. Cost/Share $433.92 Unrealized @ Report Date +2.4%

A Agilent Tech, Inc. 1.2%

Value $7.511M Shares 55,200 Share Price $136.07 Est. Cost/Share $132.85 Unrealized @ Report Date +2.4%

HEI HEICO Corp. 1.0%

Value $6.31M Shares 19,500 Share Price $323.59 Est. Cost/Share $167.85 Unrealized @ Report Date +92.8%

MSFT Microsoft Corp. 0.8%

Value $5.111M Shares 10,569 Share Price $483.62 Est. Cost/Share $90.57 Unrealized @ Report Date +433.9%

ORA Ormat Technologies 0.5%

Value $3.093M Shares 28,000 Share Price $110.47 Est. Cost/Share $68.71 Unrealized @ Report Date +60.8%

GNRC Generac Holdings 0.4%

Value $2.68M Shares 19,650 Share Price $136.37 Est. Cost/Share $113.74 Unrealized @ Report Date +19.9%

PHO Invesco Water ETF 0.4%

Value $2.308M Shares 32,780 Share Price $70.41 Est. Cost/Share $52.99 Unrealized @ Report Date +32.9%

VNOM Viper Energy Inc 0.0%

Value $297K Shares 7,700 Share Price $38.63 Est. Cost/Share $37.86 Unrealized @ Report Date +2.0%

FAST Fastenal Co. 0.0%

Value $287K Shares 7,150 Share Price $40.13 Est. Cost/Share $42.03 Unrealized @ Report Date -4.5%

STLNF Stallion Uranium Corp 0.0%

Value $20,155 Shares 85,000 Share Price $0.24 Est. Cost/Share $0.27 Unrealized @ Report Date —

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
WPM	Wheaton Precious Mtls	668,605	$78.57M	12.6%	$117.52	$26.64	+341.1%	COM	962879102
APH	Amphenol Corp.	282,911	$38.23M	6.1%	$135.14	$49.89	+170.9%	COM	032095101
V	Visa Inc.	97,216	$34.09M	5.5%	$350.71	$208.01	+68.6%	COM	92826C839
ADI	Analog Devices	125,021	$33.91M	5.4%	$271.20	$184.36	+47.1%	COM	032654105
—	Aon plc	88,782	$31.33M	5.0%	$352.88	$172.84	—	COM	g0403h108
AME	Ametek Inc.	139,796	$28.7M	4.6%	$205.31	$125.21	+64.0%	COM	031100100
SCI	Service Corp. Int'l	367,633	$28.66M	4.6%	$77.97	$38.46	+102.8%	COM	817565104
ECL	Ecolab Inc.	105,058	$27.58M	4.4%	$262.52	$96.52	+172.0%	COM	278865100
ROL	Rollins, Inc.	455,730	$27.35M	4.4%	$60.02	$39.72	+51.1%	COM	775711104
DHR	Danaher Corp.	114,881	$26.3M	4.2%	$228.92	$171.58	+33.4%	COM	235851102
RYAN	Ryan Specialty Hldngs	477,671	$24.66M	4.0%	$51.63	$38.70	+33.4%	COM	78351F107
SCHW	Charles Schwab	240,933	$24.07M	3.9%	$99.91	$65.84	+51.8%	COM	808513105
DCI	Donaldson Co., Inc.	270,405	$23.97M	3.9%	$88.66	$72.73	+21.6%	COM	257651109
FERG	Ferguson Enterprises	104,175	$23.19M	3.7%	$222.63	$206.45	+7.4%	COM	31488V107
AWK	Amer. Water Works	169,044	$22.06M	3.5%	$130.50	$136.82	-4.6%	COM	030420103
WSO	Watsco, Inc.	55,692	$18.77M	3.0%	$336.95	$356.75	-5.6%	COM	942622200
ALSN	Allison Transmission	164,597	$16.11M	2.6%	$97.90	$38.61	+153.6%	COM	01973R101
KAI	Kadant Inc.	55,120	$15.71M	2.5%	$285.02	$295.94	-3.8%	COM	48282T104
PGR	Progressive Corp.	66,280	$15.09M	2.4%	$227.72 *	$68.01	+214.8%	COM	743315103
BMI	Badger Meter Inc	82,695	$14.42M	2.3%	$174.41	$179.79	-3.0%	COM	056525108
KRNT	Kornit Digital	901,960	$12.97M	2.1%	$14.38	$18.83	-23.6%	COM	M6372Q113
NXE	NexGen Energy Ltd.	1,235,150	$11.38M	1.8%	$9.21	$1.31	+602.6%	COM	65340P106
FISV	Fiserv Inc.	143,923	$9.667M	1.6%	$67.17	$64.10	+4.8%	COM	337738108
ROP	Roper Technologies	17,455	$7.77M	1.2%	$445.13	$433.92	+2.4%	COM	776696106
A	Agilent Tech, Inc.	55,200	$7.511M	1.2%	$136.07	$132.85	+2.4%	COM	00846U101
HEI	HEICO Corp.	19,500	$6.31M	1.0%	$323.59	$167.85	+92.8%	COM	422806109
MSFT	Microsoft Corp.	10,569	$5.111M	0.8%	$483.62	$90.57	+433.9%	COM	594918104
ORA	Ormat Technologies	28,000	$3.093M	0.5%	$110.47	$68.71	+60.8%	COM	686688102
GNRC	Generac Holdings	19,650	$2.68M	0.4%	$136.37	$113.74	+19.9%	COM	368736104
PHO	Invesco Water ETF	32,780	$2.308M	0.4%	$70.41	$52.99	+32.9%	COM	46137V142
VNOM	Viper Energy Inc	7,700	$297K	0.0%	$38.63	$37.86	+2.0%	COM	64361Q101
FAST	Fastenal Co.	7,150	$287K	0.0%	$40.13	$42.03	-4.5%	COM	311900104
STLNF	Stallion Uranium Corp	85,000	$20,155	0.0%	$0.24	$0.27	—	COM	852919208