Latest DUDLEY & SHANLEY, INC. Stock Portfolio

$662Million | No. of Holdings #37

DUDLEY & SHANLEY, INC. Performance

2026 Q2+4.00%

YTD+2.42%

2025+11.02%

About DUDLEY & SHANLEY, INC. and 13F Hedge Fund Stock Holdings

DUDLEY & SHANLEY, INC. is a hedge fund based in Palm Beach, FL. On 2026-07-09, the fund reported it's updated stock portfolio. In the 13F Holdings report, DUDLEY & SHANLEY, INC. reported an equity portfolio of $662.3 Millions as of 30 Jun, 2026. <br><br> The top stock holdings of DUDLEY & SHANLEY, INC. are WPM, APH, AME. The fund has invested 7.7% of it's portfolio in WHEATON PRECIOUS MTLS and 6.2% of portfolio in AMPHENOL CORP. <br><br> The fund managers got completely rid off INVESCO WATER ETF (CSD) stocks. They significantly reduced their stock positions in BADGER METER INC (BMI), DANAHER CORP. (DHR) and ANALOG DEVICES (ADI). DUDLEY & SHANLEY, INC. opened new stock positions in PFIZER, INC. (PFE). The fund showed a lot of confidence in some stocks as they added substantially to FEDERAL SIGNAL CORP (FSS), FASTENAL CO. (FAST) and XYLEM INC. (XYL).

DUDLEY & SHANLEY, INC. Equity Portfolio Value

Last Reported on: 09 Jul, 2026

$662Million

as of Jul 09, 2026

DUDLEY & SHANLEY, INC. Annual Return Estimates Vs S&P 500

Our best estimate is that DUDLEY & SHANLEY, INC. made a return of 4% in the last quarter. In trailing 12 months, it's portfolio return was 4.25%.

Performance
S&P 500

New Buys

Ticker	$ Bought
pfizer, inc.	3,973,200

New stocks bought by DUDLEY & SHANLEY, INC.

Additions

Ticker	% Inc.
federal signal corp	169
fastenal co.	160
xylem inc.	123
waters corporation	101
watsco, inc.	40.08
agilent tech, inc.	25.91
rollins, inc.	8.76
donaldson co., inc.	0.71

Additions to existing portfolio by DUDLEY & SHANLEY, INC.

Reductions

Ticker	% Reduced
badger meter inc	-48.42
danaher corp.	-35.56
analog devices	-29.35
fiserv inc.	-23.18
generac holdings	-17.81
ormat technologies	-6.79
amphenol corp.	-4.6
ryan specialty hldngs	-3.1

DUDLEY & SHANLEY, INC. reduced stake in above stock

Sold off

Ticker	$ Sold
invesco water etf	-2,191,670

DUDLEY & SHANLEY, INC. got rid off the above stocks

Sector Distribution

DUDLEY & SHANLEY, INC. has about 29% of it's holdings in Industrials sector.

Industrials
Financial Services
Others
Technology
Consumer Cyclical
Healthcare
Basic Materials
Utilities

Sector	%
Industrials	29
Financial Services	17.7
Others	17.1
Technology	12.4
Consumer Cyclical	10.2
Healthcare	5.5
Basic Materials	4.4
Utilities	3.8

Market Cap. Distribution

DUDLEY & SHANLEY, INC. has about 71.3% of it's portfolio invested in the large-cap and mega-cap stocks.

LARGE-CAP
UNALLOCATED
MID-CAP
MEGA-CAP

Category	%
LARGE-CAP	65.7
UNALLOCATED	17.1
MID-CAP	11.5
MEGA-CAP	5.6

Stocks belong to which Index?

About 63.5% of the stocks held by DUDLEY & SHANLEY, INC. either belong to S&P 500 or RUSSELL 2000 index.

S&P 500
Others
RUSSELL 2000

Index	%
S&P 500	54.8
Others	36.5
RUSSELL 2000	8.7

Top 5 Winners (%)		%
GNRC	generac holdings	45.5 %
APH	amphenol corp.	38.6 %
HEI	heico corp.	29.9 %
ADI	analog devices	21.2 %
	atha energy corp.	18.8 %

Top 5 Winners ($)		$
APH	amphenol corp.	12.0 M
ADI	analog devices	6.4 M
V	visa inc.	4.0 M
AME	ametek inc.	3.9 M
WSO	watsco, inc.	3.5 M

Top 5 Losers (%)		%
	stallion uranium corp	-58.1 %
ROL	rollins, inc.	-21.2 %
NXE	nexgen energy ltd.	-19.1 %
WPM	wheaton precious mtls	-14.2 %
	fiserv inc.	-10.7 %

Top 5 Losers ($)		$
WPM	wheaton precious mtls	-8.5 M
ROL	rollins, inc.	-5.6 M
NXE	nexgen energy ltd.	-2.7 M
SCI	service corp. int'l	-2.4 M
	fiserv inc.	-0.9 M

DUDLEY & SHANLEY, INC. Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of DUDLEY & SHANLEY, INC.

DUDLEY & SHANLEY, INC. has 37 stocks in it's portfolio. About 49.8% of the portfolio is in top 10 stocks. WPM proved to be the most loss making stock for the portfolio. APH was the most profitable stock for DUDLEY & SHANLEY, INC. last quarter.

$662.29MTotal Value

38.00Positions

09 Jul, 2026Last Reported

Current holdings of Current Stock Holdings of DUDLEY & SHANLEY, INC., last reported on 09 Jul, 2026. Select a row with a linked ticker to view its historical trend.
Holdingsorted ascending	% Portfolio	Shares Held	$ Value	% Change
A Agilent Tech, Inc. Agilent Tech, Inc.A DUDLEY & SHANLEY, INC.'s holding in Agilent Tech, Inc. over time	1.39%	69,500	$9.23M 1.39%	increased 25.91 percentadded

ADI Analog Devices Analog DevicesADI DUDLEY & SHANLEY, INC.'s holding in Analog Devices over time	4.03%	67,200	$26.69M 4.03%	decreased 29.35 percentreduced

ALSN Allison Transmission Allison TransmissionALSN DUDLEY & SHANLEY, INC.'s holding in Allison Transmission over time	2.81%	165,037	$18.61M 2.81%	increased 0.27 percentadded

AME Ametek Inc. Ametek Inc.AME DUDLEY & SHANLEY, INC.'s holding in Ametek Inc. over time	5.11%	139,731	$33.81M 5.11%	decreased 0.01 percentreduced

AON Aon Plc Aon PlcAON DUDLEY & SHANLEY, INC.'s holding in Aon Plc over time	4.45%	88,807	$29.46M 4.45%	increased 0.03 percentadded

APH Amphenol Corp. Amphenol Corp.APH DUDLEY & SHANLEY, INC.'s holding in Amphenol Corp. over time	6.24%	234,451	$41.34M 6.24%	decreased 4.6 percentreduced

AWK Amer. Water Works Amer. Water WorksAWK DUDLEY & SHANLEY, INC.'s holding in Amer. Water Works over time	3.36%	169,344	$22.28M 3.36%	increased 0.18 percentadded

BMI Badger Meter Inc Badger Meter IncBMI DUDLEY & SHANLEY, INC.'s holding in Badger Meter Inc over time	1.41%	63,000	$9.35M 1.41%	decreased 48.42 percentreduced

CSD Invesco Water Etf Invesco Water Etf CSD DUDLEY & SHANLEY, INC.'s holding in Invesco Water Etf over time	0%	0.00	$0.00 0%	decreased 100 percentsold off

DCI Donaldson Co., Inc. Donaldson Co., Inc.DCI DUDLEY & SHANLEY, INC.'s holding in Donaldson Co., Inc. over time	3.69%	272,330	$24.45M 3.69%	increased 0.71 percentadded

DHR Danaher Corp. Danaher Corp.DHR DUDLEY & SHANLEY, INC.'s holding in Danaher Corp. over time	2.13%	74,024	$14.10M 2.13%	decreased 35.56 percentreduced

ECL Ecolab Inc. Ecolab Inc.ECL DUDLEY & SHANLEY, INC.'s holding in Ecolab Inc. over time	4.4%	104,693	$29.17M 4.4%	decreased 0.3 percentreduced

FAST Fastenal Co. Fastenal Co.FAST DUDLEY & SHANLEY, INC.'s holding in Fastenal Co. over time	3.43%	472,440	$22.69M 3.43%	increased 160.66 percentadded

FSS Federal Signal Corp Federal Signal CorpFSS DUDLEY & SHANLEY, INC.'s holding in Federal Signal Corp over time	3.28%	169,285	$21.75M 3.28%	increased 169.86 percentadded

GNRC Generac Holdings Generac HoldingsGNRC DUDLEY & SHANLEY, INC.'s holding in Generac Holdings over time	0.71%	16,150	$4.73M 0.71%	decreased 17.81 percentreduced

HEI Heico Corp. Heico Corp.HEI DUDLEY & SHANLEY, INC.'s holding in Heico Corp. over time	1.05%	19,500	$6.95M 1.05%	unchanged 0 percentunchanged

KAI Kadant Inc. Kadant Inc.KAI DUDLEY & SHANLEY, INC.'s holding in Kadant Inc. over time	3.59%	75,735	$23.80M 3.59%	unchanged 0 percentunchanged

KRNT Kornit Digital Kornit Digital KRNT DUDLEY & SHANLEY, INC.'s holding in Kornit Digital over time	3.08%	1,255,260	$20.40M 3.08%	increased 0.05 percentadded

MSFT Microsoft Corp. Microsoft Corp.MSFT DUDLEY & SHANLEY, INC.'s holding in Microsoft Corp. over time	0.6%	10,569	$3.94M 0.6%	unchanged 0 percentunchanged

NXE Nexgen Energy Ltd. Nexgen Energy Ltd. NXE DUDLEY & SHANLEY, INC.'s holding in Nexgen Energy Ltd. over time	1.74%	1,225,500	$11.51M 1.74%	increased 0.08 percentadded