DUDLEY & SHANLEY, INC.

Registered adviser

CIK

883511

Location

PALM BEACH, FL

Portfolio Value

Small $629,060,826

Diversification

Diversified

Filing Date

Global Rank

#3,256 / 8,827 ▼ 92 · as of Jun 2026

Top Industry

Specialty Industrial Machinery 18.1%

Period ended 37 days ago

Filed Oct 6, 2026 · 31d

27 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Registered adviser

Form ADV roster, Nov 1, 2026

Form ADV adviser

CRD 157515

Roster of Nov 1, 2026

Regulatory AUM

$746,831,687

Main clients

Individuals and high net worth (57% of AUM)

Private funds

3 funds · Other private funds

Focus by fund count, roster of Nov 1, 2026

$261,137,287 gross assets

Private funds on Schedule D 7.B.(1)

As filed Mar 13, 2024; SEC's bulk Form ADV archive ends with 2024 filings.

$242,615,267 gross assets in 3 funds Other private funds $242,615,267 (3)

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2026 to Nov 2026	$746,831,687	Individuals and high net worth (57%)
Apr 2025 to Mar 2026	$713,024,963	Individuals and high net worth (57%)
Apr 2024 to Mar 2025	$659,939,975	Individuals and high net worth (55%)
May 2023 to Mar 2024	$610,775,812	Individuals and high net worth (55%)
Apr 2023	$610,775,812	Individuals and high net worth (55%)
Apr 2022 to Mar 2023	$690,496,362	Individuals and high net worth (54%)

3 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.

Style

Diversified active

Top 10 weight 49.8%, 25.1 effective positions, active share 95.3% against the Dow Jones Industrial Average as of 2026-07-31; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Low turnover

21.8% over the last four quarters (under 30%)

Horizon

Long horizon

Value-weighted holding period 16.6 quarters (12+), a floor since 33.5% of the book was already held when coverage starts

Closest benchmark: the Dow Jones Industrial Average as of 2026-07-31, active share 95.3%; sector active share 46.6% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

35 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026

Top Position

9.0%

+1.2 pts

Top 5

27.3%

−1.7 pts

Top 10

46.4%

−3.4 pts

HHI

385

Diversified−14

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026

Sector	% Portfolio	Value	Positions
Industrials	31.6%	$198,665,733	11
Financial Services	18.0%	$113,462,739	5
Technology	17.2%	$108,012,929	6
Basic Materials	13.3%	$83,545,902	2
Consumer Cyclical	7.3%	$45,927,196	2
Healthcare	6.7%	$41,966,872	4
Utilities	3.7%	$23,174,297	2
Energy	1.8%	$11,483,713	2
Unclassified	0.4%	$2,821,445	1

Last Quarter's Activity

Export CSV

Sep 30, 2026 vs Jun 30, 2026

Added To

Positions the filer increased

7 positions

Ticker	Company	Δ Shares	Shares	Value
APH	Amphenol Corp	+73,377	307,828	$25,949,900
ROP	Roper Technologies Inc	+55,325	57,325	$20,029,928
PGR	Progressive Corp	+37,872	104,152	$21,591,751
BMI	Badger Meter Inc	+21,600	84,600	$10,451,484
ALSN	Allison Transmission Holdings Inc	+10,237	175,274	$19,851,533
FSS	Federal Signal Corp	+4,765	174,050	$19,282,999
RYAN	Ryan Specialty Holdings, Inc.	+743	465,889	$17,237,893
No positions match the current search.

Trimmed

Positions the filer reduced

20 positions

Ticker	Company	Δ Shares	Shares	Value
KRNT	Kornit Digital Ltd.	−86,720	1,168,545	$19,421,217
FISV	Fiserv Inc	−48,109	62,449	$2,821,445
WPM	Wheaton Precious Metals Corp.	−33,232	421,408	$56,350,676
SCHW	Schwab Charles Corp	−28,968	211,965	$20,717,459
WSO	Watsco Inc	−26,447	51,565	$15,608,209
SCI	Service Corp International	−25,358	342,425	$26,075,663
FAST	Fastenal Co	−17,500	454,940	$22,533,178
V	Visa Inc.	−12,552	84,419	$30,334,279
AME	Ametek Inc	−12,488	127,243	$31,521,908
DCI	DONALDSON Co INC	−12,160	260,170	$22,645,196
XYL	Xylem Inc.	−10,740	170,310	$17,247,293
AWK	American Water Works Company, Inc.	−8,794	160,550	$20,786,408
ECL	Ecolab Inc.	−5,650	99,043	$27,195,226
A	Agilent Technologies, Inc.	−4,950	64,550	$11,122,610
FERG	Ferguson Enterprises Inc.	−4,193	100,032	$22,269,123
AON	Aon plc	−3,605	85,202	$23,581,357
KAI	Kadant Inc	−2,953	72,782	$19,033,948
DHR	Danaher Corp	−2,829	71,195	$15,773,252
ADI	Analog Devices Inc	−2,561	64,639	$25,642,937
HEI	Heico Corp	−500	19,000	$5,760,420
No positions match the current search.

New Positions

Positions the filer opened this quarter

1 positions

Ticker	Company	Shares	Value	Open
TYL	Tyler Technologies Inc	64,400	$20,517,840
No positions match the current search.

Sold Out

Positions the filer fully exited

2 positions

Ticker	Company	Shares	Value
ROL	Rollins Inc	495,655	$20,688,639
STLNF	Stallion Uranium Corp.	180,000	$27,342
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

35 tracked positions · $629,060,826 total · filing declares 37 positions · $629,160,693 · as of Sep 30, 2026

All sectors Basic Materials Consumer Cyclical Energy Financial Services Healthcare Industrials Technology Utilities

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
WPM	Wheaton Precious Metals Corp. Basic Materials	Reduced	421,408	-33,232	$56,350,676	+10.4%	8.96%
AME	Ametek Inc Industrials	Reduced	127,243	-12,488	$31,521,908	−6.8%	5.01%
V	Visa Inc. Financial Services	Reduced	84,419	-12,552	$30,334,279	−8.8%	4.82%
ECL	Ecolab Inc. Basic Materials	Reduced	99,043	-5,650	$27,195,226	−6.8%	4.32%
SCI	Service Corp International Consumer Cyclical	Reduced	342,425	-25,358	$26,075,663	−6.7%	4.15%
APH	Amphenol Corp Technology	Added	307,828	+73,377	$25,949,900	−37.2%	4.13%
ADI	Analog Devices Inc Technology	Reduced	64,639	-2,561	$25,642,937	−3.9%	4.08%
AON	Aon plc Financial Services	Reduced	85,202	-3,605	$23,581,357	−19.9%	3.75%
DCI	DONALDSON Co INC Industrials	Reduced	260,170	-12,160	$22,645,196	−7.4%	3.60%
FAST	Fastenal Co Industrials	Reduced	454,940	-17,500	$22,533,178	−0.7%	3.58%
FERG	Ferguson Enterprises Inc. Industrials	Reduced	100,032	-4,193	$22,269,123	−10.0%	3.54%
PGR	Progressive Corp Financial Services	Added	104,152	+37,872	$21,591,751	+49.1%	3.43%
AWK	American Water Works Company, Inc. Utilities	Reduced	160,550	-8,794	$20,786,408	−6.7%	3.30%
SCHW	Schwab Charles Corp Financial Services	Reduced	211,965	-28,968	$20,717,459	−6.8%	3.29%
TYL	Tyler Technologies Inc Technology	NEW	64,400	NEW	$20,517,840	NEW	3.26%
ROP	Roper Technologies Inc Technology	Added	57,325	+55,325	$20,029,928	+2859.6%	3.18%
ALSN	Allison Transmission Holdings Inc Consumer Cyclical	Added	175,274	+10,237	$19,851,533	+6.7%	3.16%
KRNT	Kornit Digital Ltd. Industrials	Reduced	1,168,545	-86,720	$19,421,217	−4.8%	3.09%
FSS	Federal Signal Corp Industrials	Added	174,050	+4,765	$19,282,999	−11.3%	3.07%
KAI	Kadant Inc Industrials	Reduced	72,782	-2,953	$19,033,948	−20.0%	3.03%
XYL	Xylem Inc. Industrials	Reduced	170,310	-10,740	$17,247,293	−19.4%	2.74%
RYAN	Ryan Specialty Holdings, Inc. Financial Services	Added	465,889	+743	$17,237,893	−1.9%	2.74%
DHR	Danaher Corp Healthcare	Reduced	71,195	-2,829	$15,773,252	+11.9%	2.51%
WSO	Watsco Inc Industrials	Reduced	51,565	-26,447	$15,608,209	−52.0%	2.48%
NXE	NexGen Energy Ltd. Energy	Held	1,225,500	0	$11,176,560	−2.9%	1.78%
A	Agilent Technologies, Inc. Healthcare	Reduced	64,550	-4,950	$11,122,610	+20.5%	1.77%
BMI	Badger Meter Inc Technology	Added	84,600	+21,600	$10,451,484	+11.8%	1.66%
WAT	Waters Corp Healthcare	Held	23,590	0	$10,365,210	+17.2%	1.65%
HEI	Heico Corp Industrials	Reduced	19,000	-500	$5,760,420	−17.1%	0.92%
MSFT	Microsoft Corp Technology	Held	10,569	0	$5,420,840	+37.5%	0.86%
PFE	Pfizer Inc Healthcare	Held	165,000	0	$4,705,800	+18.4%	0.75%
GNRC	Generac Holdings Inc. Industrials	Held	16,150	0	$3,342,242	−29.3%	0.53%
FISV	Fiserv Inc	Reduced	62,449	-48,109	$2,821,445	−48.0%	0.45%
ORA	Ormat Technologies, Inc. Utilities	Held	26,100	0	$2,387,889	−16.0%	0.38%
VNOM	Viper Energy, Inc. Energy	Held	7,700	0	$307,153	−5.9%	0.05%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.