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

2021 Q3 · filed 26 Oct · long equity

SPGI - S&P Global 6.74% Hold 2,327,426 $424.89 $989M
GOOGL - Alphabet · CL A 5.69% Hold 311,989 $2,674 $834M
A - Agilent Technologies 3.90% Hold 3,628,722 $157.53 $572M
ADI - Analog Devices 3.89% Hold 3,403,479 $167.48 $570M
EFX - Equifax 3.68% Hold 2,130,761 $253.42 $540M
V - VISA · CL A 3.67% Hold 2,413,372 $222.75 $538M
AVGO - Broadcom 3.58% Hold 1,082,706 $484.93 $525M
TMO - Thermo Fisher Scientific 3.51% Hold 901,211 $571.33 $515M
AMT - American Tower 3.50% Hold 1,934,586 $265.41 $513M
ICE - Intercontinental Exchange 3.24% Hold 4,134,701 $114.82 $475M
AMAT - Applied Matls 3.22% Hold 3,668,926 $128.73 $472M
FIS - Fidelity Natl Info 3.14% Hold 3,787,345 $121.68 $461M
CBRE - CBRE Group · CL A 3.05% Hold 4,596,661 $97.36 $448M
ZTS - Zoetis · CL A 2.92% Hold 2,206,564 $194.14 $428M
META - Meta Platforms · CL A 2.77% Hold 1,198,787 $339.39 $407M
ECL - Ecolab 2.68% Hold 1,882,356 $208.62 $393M
TSM - Taiwan Semiconductor Mfg 2.68% Hold 3,516,896 $111.65 $393M
BC - Brunswick 2.66% Hold 4,098,379 $95.27 $390M
WTW - Willis Towers Watson 2.64% Hold 1,668,708 $232.46 $388M
AON - AON PLC · CL A 2.52% Hold 1,293,142 $285.77 $370M
VRSN - Verisign 2.46% Hold 1,760,022 $205.01 $361M
GOOG - Alphabet · CL C 2.44% Hold 134,425 $2,665 $358M
Trinet Group 2.42% Hold 3,760,211 $94.58 $356M
ADSK - Autodesk 2.33% Hold 1,198,122 $285.17 $342M
CME - CME Group 2.26% Hold 1,710,603 $193.38 $331M
FAST - Fastenal 2.02% Hold 5,727,645 $51.61 $296M
MSFT - Microsoft 1.90% Hold 988,417 $281.92 $279M
Citrix Sys 1.89% Hold 2,583,172 $107.37 $277M
BDX - Becton Dickinson & 1.87% Hold 1,118,342 $245.82 $275M
ENTG - Entegris 1.87% Hold 2,181,573 $125.90 $275M
IQV - IQVIA 1.84% Hold 1,128,213 $239.54 $270M
SSNC - SS&C Technologies 1.82% Hold 3,841,840 $69.40 $267M
MCO - Moodys 1.34% Hold 552,503 $355.11 $196M
CACC - Credit Accep Mich 1.07% Hold 268,874 $585.30 $157M
PRI - Primerica 1.02% Hold 975,320 $153.63 $150M
IBKR - Interactive Brokers · CL A 0.99% Hold 2,325,818 $62.34 $145M
AWI — 0.77% Hold 1,178,741 $95.47 $113M

* 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). Click column headers to sort · click New / Hold / Add / Reduce to promote that move type to the top.

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