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

2022 Q3 2022 Q2 · filed 3 Nov · long equity

SPGI - S&P Global 5.85% Reduce −0.9% 2,116,093 $305.35 $646M −18,778 −$73M
GOOGL - Alphabet · CL A 5.10% Add +1880.9% 5,889,126 $95.65 $563M +5,591,826 −$85M
AVGO - Broadcom 4.11% Reduce −0.9% 1,021,489 $444.01 $454M −9,583 −$47M
ADI - Analog Devices 4.06% Reduce −0.9% 3,215,910 $139.34 $448M −27,784 −$26M
TMO - Thermo Fisher Scientific 3.91% Reduce −0.8% 851,439 $507.19 $432M −6,767 −$34M
A - Agilent Technologies 3.77% Reduce −0.9% 3,427,840 $121.55 $417M −30,916 +$6M
V - VISA · CL A 3.67% Reduce −0.9% 2,281,428 $177.65 $405M −19,912 −$48M
AMT - American Tower 3.56% Reduce −0.7% 1,831,099 $214.70 $393M −13,128 −$78M
WTW - Willis Towers Watson 3.34% Reduce −0.7% 1,836,160 $200.94 $369M −13,163 +$4M
ICE - Intercontinental Exchange 3.20% Reduce −0.9% 3,907,633 $90.35 $353M −33,548 −$18M
EFX - Equifax 3.13% Reduce −0.8% 2,015,876 $171.43 $346M −15,483 −$26M
AON - AON PLC · CL A 2.96% Reduce −0.9% 1,221,914 $267.87 $327M −11,477 −$5M
FIS - Fidelity Natl Info 2.87% Reduce −0.9% 4,196,301 $75.57 $317M −36,777 −$71M
VRSN - Verisign 2.76% Reduce −0.7% 1,751,262 $173.70 $304M −11,975 +$9M
CBRE - CBRE Group · CL A 2.75% Reduce −0.9% 4,505,213 $67.51 $304M −39,820 −$30M
CME - CME Group 2.59% Reduce −0.9% 1,614,662 $177.13 $286M −14,374 −$47M
AMAT - Applied Matls 2.58% Reduce −0.9% 3,470,583 $81.93 $284M −31,175 −$34M
IQV - IQVIA 2.56% Reduce −0.9% 1,560,039 $181.14 $283M −13,890 −$59M
BC - Brunswick 2.55% Reduce −1.0% 4,300,917 $65.45 $281M −45,457 −$3M
MSFT - Microsoft 2.55% Add +13.0% 1,207,444 $232.90 $281M +139,323 +$7M
ZTS - Zoetis · CL A 2.50% Reduce −0.7% 1,857,751 $148.29 $275M −13,566 −$46M
ECL - Ecolab 2.33% Reduce −0.8% 1,782,160 $144.42 $257M −15,001 −$19M
Trinet Group 2.29% Reduce −0.7% 3,549,515 $71.22 $253M −25,627 −$25M
FAST - Fastenal 2.26% Reduce −1.0% 5,409,249 $46.04 $249M −57,024 −$24M
BDX - Becton Dickinson & 2.19% Reduce −1.1% 1,085,256 $222.83 $242M −12,198 −$29M
BLK - Blackrock 2.12% Add +14.5% 425,689 $550.28 $234M +53,808 +$8M
ADSK - Autodesk 2.09% Reduce −0.9% 1,235,493 $186.80 $231M −10,836 +$16M
GOOG - Alphabet · CL C 2.09% Add +1881.6% 2,396,018 $96.15 $230M +2,275,107 −$34M
TSM - Taiwan Semiconductor Mfg 2.06% Reduce −0.8% 3,322,282 $68.56 $228M −27,836 −$46M
ENTG - Entegris 1.92% Add +22.7% 2,556,644 $83.02 $212M +472,922 +$20M
SSNC - SS&C Technologies 1.90% Add +19.7% 4,386,719 $47.75 $209M +720,803 −$3M
IBKR - Interactive Brokers · CL A 1.43% Reduce −0.9% 2,470,872 $63.91 $158M −22,039 +$21M
META - Meta Platforms · CL A 1.39% Reduce −0.8% 1,133,827 $135.68 $154M −9,108 −$30M
AWI — 1.27% Reduce −0.9% 1,764,912 $79.23 $140M −15,852 +$6M
MCO - Moodys 1.15% Reduce −0.9% 523,267 $243.11 $127M −4,545 −$16M
CACC - Credit Accep Mich 1.00% Reduce −1.2% 252,544 $438.00 $111M −2,954 −$10M
ADBE - Adobe Systems 0.95% Reduce −0.8% 382,590 $275.20 $105M −2,972 −$36M
Endeavor Group · CL A 0.75% Reduce −0.9% 4,099,864 $20.26 $83M −36,586 −$2M
Hayward 0.43% Reduce −1.1% 5,402,297 $8.87 $48M −60,721 −$31M

* 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 Q2. 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