Follow-The-Filings

Featured 13F manager

Cantillon Capital Management LLC William Von Mueffling

New York, NY 23 processed 13Fs on this site · 2021 Q3–2026 Q2

  • $665M
  • 27 Positions
  • 2026 Q2
  • −95.6% QoQ
  • Top 5 40.2%

Portfolio

2026 Q2 · filed 7/29/2026 · 27 long · top 12 shown

top 5 40.2% · top 10 61.8%

AUM over time

2026 Q2 $665M −95.6% QoQ
2021 Q3 · $14.7B 2021 Q3 · $14.7B
Q3 2021
2021 Q4 · $15.1B · +3.2% QoQ 2021 Q4 · $15.1B · +3.2% QoQ
Q4
2022 Q1 · $14B · −7.5% QoQ 2022 Q1 · $14B · −7.5% QoQ
Q1 2022
2022 Q2 · $12B · −14.5% QoQ 2022 Q2 · $12B · −14.5% QoQ
Q2
2022 Q3 · $11B · −7.8% QoQ 2022 Q3 · $11B · −7.8% QoQ
Q3
2022 Q4 · $11.8B · +6.9% QoQ 2022 Q4 · $11.8B · +6.9% QoQ
Q4
2023 Q1 · $12.3B · +4.0% QoQ 2023 Q1 · $12.3B · +4.0% QoQ
Q1 2023
2023 Q2 · $14.3B · +16.5% QoQ 2023 Q2 · $14.3B · +16.5% QoQ
Q2
2023 Q3 · $13.5B · −5.8% QoQ 2023 Q3 · $13.5B · −5.8% QoQ
Q3
2023 Q4 · $15B · +11.0% QoQ 2023 Q4 · $15B · +11.0% QoQ
Q4
2024 Q1 · $15.9B · +6.2% QoQ 2024 Q1 · $15.9B · +6.2% QoQ
Q1 2024
2024 Q2 · $15B · −5.9% QoQ 2024 Q2 · $15B · −5.9% QoQ
Q2
2024 Q3 · $16.4B · +9.3% QoQ 2024 Q3 · $16.4B · +9.3% QoQ
Q3
2024 Q4 · $16.5B · +1.2% QoQ 2024 Q4 · $16.5B · +1.2% QoQ
Q4
2025 Q1 · $15.4B · −6.7% QoQ 2025 Q1 · $15.4B · −6.7% QoQ
Q1 2025
2025 Q2 · $17.3B · +12.0% QoQ 2025 Q2 · $17.3B · +12.0% QoQ
Q2
2025 Q3 · $18.2B · +5.0% QoQ 2025 Q3 · $18.2B · +5.0% QoQ
Q3
2025 Q4 · $18.5B · +1.8% QoQ 2025 Q4 · $18.5B · +1.8% QoQ
Q4
2026 Q1 · $15.1B · −18.6% QoQ 2026 Q1 · $15.1B · −18.6% QoQ
Q1 2026
2026 Q2 · $665M · −95.6% QoQ 2026 Q2 · $665M · −95.6% QoQ
Q2

Book

2023 Q1 2022 Q4 · filed 4 May · long equity

SPGI - S&P Global 5.74% Reduce −1.6% 2,043,185 $344.77 $704M −33,667 +$9M
AVGO - Broadcom 5.15% Reduce −1.6% 985,157 $641.54 $632M −15,686 +$72M
ADI - Analog Devices 4.98% Reduce −1.8% 3,103,083 $197.22 $612M −56,262 +$94M
V - VISA · CL A 4.05% Reduce −1.8% 2,203,573 $225.46 $497M −40,200 +$31M
TMO - Thermo Fisher Scientific 3.85% Reduce −1.8% 820,122 $576.37 $473M −14,827 +$13M
A - Agilent Technologies 3.72% Reduce −1.7% 3,305,243 $138.34 $457M −56,858 −$46M
GOOGL - Alphabet · CL A 3.48% Reduce −28.6% 4,121,329 $103.73 $428M −1,654,647 −$82M
AMAT - Applied Matls 3.36% Reduce −1.7% 3,359,779 $122.83 $413M −57,491 +$80M
WTW - Willis Towers Watson 3.35% Reduce −1.6% 1,770,431 $232.38 $411M −29,486 −$29M
MSFT - Microsoft 3.35% Add +20.4% 1,426,377 $288.30 $411M +241,558 +$127M
EFX - Equifax 3.22% Reduce −1.6% 1,948,113 $202.84 $395M −31,905 +$10M
ICE - Intercontinental Exchange 3.20% Reduce −1.5% 3,773,252 $104.29 $394M −58,582 +$405K
AON - AON PLC · CL A 3.03% Reduce −1.7% 1,179,916 $315.29 $372M −20,670 +$12M
AMT - American Tower 2.93% Reduce −1.7% 1,762,489 $204.34 $360M −30,104 −$20M
VRSN - Verisign 2.91% Reduce −1.8% 1,691,249 $211.33 $357M −30,748 +$4M
CME - CME Group 2.77% Add +11.9% 1,776,563 $191.52 $340M +189,319 +$73M
BC - Brunswick 2.77% Reduce −1.6% 4,145,958 $82.00 $340M −66,999 +$36M
IQV - IQVIA 2.63% Add +6.2% 1,622,702 $198.89 $323M +94,359 +$10M
CBRE - CBRE Group · CL A 2.58% Reduce −1.7% 4,353,689 $72.81 $317M −73,422 −$24M
ZTS - Zoetis · CL A 2.42% Reduce −1.6% 1,788,690 $166.44 $298M −28,371 +$31M
IBKR - Interactive Brokers · CL A 2.42% Add +11.9% 3,604,400 $82.56 $298M +384,186 +$65M
TSM - Taiwan Semiconductor Mfg 2.42% Reduce −1.6% 3,199,062 $93.02 $298M −51,192 +$55M
BLK - Blackrock 2.36% Reduce −1.2% 432,376 $669.12 $289M −5,272 −$21M
BDX - Becton Dickinson & 2.34% Add +9.0% 1,162,240 $247.54 $288M +95,900 +$17M
ECL - Ecolab 2.31% Reduce −1.8% 1,711,176 $165.53 $283M −30,560 +$30M
FAST - Fastenal 2.30% Reduce −1.6% 5,236,169 $53.94 $282M −87,046 +$31M
Trinet Group 2.24% Reduce −1.8% 3,415,475 $80.61 $275M −61,228 +$40M
SSNC - SS&C Technologies 2.21% Add +11.9% 4,813,860 $56.47 $272M +513,068 +$48M
ADSK - Autodesk 2.02% Reduce −1.6% 1,189,986 $208.16 $248M −19,160 +$22M
ENTG - Entegris 1.94% Reduce −1.7% 2,904,481 $82.01 $238M −51,733 +$44M
CDW - CDW Corp 1.94% Add +142.4% 1,221,725 $194.89 $238M +717,782 +$148M
MCO - Moodys 1.26% Reduce −1.7% 503,615 $306.02 $154M −8,897 +$11M
ADBE - Adobe Systems 1.16% Reduce −2.0% 369,506 $385.37 $142M −7,444 +$16M
FERG - Ferguson 1.13% New 1,038,171 $133.75 $139M +1,038,171 +$139M
AWI — 1.09% Reduce −1.6% 1,886,268 $71.24 $134M −31,440 +$3M
CACC - Credit Accep Mich 0.86% Reduce −1.5% 242,785 $436.04 $106M −3,772 −$11M
Hayward 0.50% Reduce −1.0% 5,191,323 $11.72 $61M −54,085 +$12M

Exits / last held

not current holdings · last reported size, unchanged · gone vs 2022 Q4

Stock % of portfolio Recent activity Shares Reported price* Value Share change $ change
FIS - Fidelity Natl Info 2.37% Exit 0 $67.85 $279M −4,115,693 −$279M
GOOG - Alphabet · CL C 1.76% Exit 0 $88.73 $208M −2,346,008 −$208M
Endeavor Group · CL A 0.76% Exit 0 $22.54 $89M −3,966,332 −$89M

* Reported price is value ÷ shares from the 13F as of period end — not a live market quote. Weight % is each long-equity position ÷ full 13F AUM, so rows may not sum to 100% when the filing includes options or other non-equity (excluded from this table). Share change and $ change are vs 2022 Q4. Click column headers to sort · click New / Hold / Add / Reduce to promote that move type to the top. Exit opens the last-held block below.

Filings history

20 periods · normalized AUM · open a period for holdings

Period Holdings AUM QoQ Form Filed Filing ID
2026 Q2 27 $665M −95.6% 13F-HR 7/29/2026 000127993626000005
2026 Q1 38 $15.1B −18.6% 13F-HR 5/7/2026 000127993626000004
2025 Q4 37 $18.5B +1.8% 13F-HR 2/11/2026 000127993626000001
2025 Q3 76 $18.2B RESTATEMENT 2/17/2026 000089914026000221
2025 Q3 38 $18.2B +5.0% 13F-HR 10/30/2025 000127993625000002
2025 Q2 75 $17.3B RESTATEMENT 2/17/2026 000089914026000220
2025 Q2 38 $17.3B +12.0% 13F-HR 7/30/2025 000108514625004326
2025 Q1 74 $15.4B RESTATEMENT 2/17/2026 000089914026000219
2025 Q1 37 $15.4B −6.7% 13F-HR 5/9/2025 000108514625002887
2024 Q4 36 $16.5B +1.2% 13F-HR 2/5/2025 000108514625000819
2024 Q3 38 $16.4B +9.3% 13F-HR 11/7/2024 000108514624005445
2024 Q2 39 $15B −5.9% 13F-HR 8/5/2024 000108514624003487
2024 Q1 37 $15.9B +6.2% 13F-HR 5/8/2024 000108514624002327
2023 Q4 37 $15B +11.0% 13F-HR 2/7/2024 000108514624000806
2023 Q3 39 $13.5B −5.8% 13F-HR 11/6/2023 000108514623004105
2023 Q2 38 $14.3B +16.5% 13F-HR 8/9/2023 000108514623003182
2023 Q1 37 $12.3B +4.0% 13F-HR 5/4/2023 000108514623002054
2022 Q4 39 $11.8B +6.9% 13F-HR 2/6/2023 000108514623000646
2022 Q3 39 $11B −7.8% 13F-HR 11/3/2022 000108514622003752
2022 Q2 39 $12B −14.5% 13F-HR 8/3/2022 000108514622002745
2022 Q1 37 $14B −7.5% 13F-HR 5/3/2022 000108514622001676
2021 Q4 38 $15.1B +3.2% 13F-HR 1/27/2022 000108514622000359
2021 Q3 37 $14.7B 13F-HR 10/26/2021 000108514621002904

About

CANTILLON CAPITAL MANAGEMENT LLC

23 processed 13Fs on this site · 2021 Q3–2026 Q2

Notable person
William Von Mueffling
SEC filing name
CANTILLON CAPITAL MANAGEMENT LLC
Location
New York, NY
All SEC filings
View on sec.gov