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

2026 Q1 2025 Q4 · filed 7 May · long equity

AVGO - Broadcom 8.34% Reduce −11.9% 4,056,002 $309.51 $1.3B −548,299 −$338M
GOOGL - Alphabet · CL A 7.10% Reduce −11.9% 3,715,061 $287.56 $1.1B −500,173 −$251M
TSM - Taiwan Semiconductor 5.60% Reduce −11.9% 2,493,551 $337.95 $843M −335,727 −$17M
IBKR - Interactive Brokers · CL A 5.01% Reduce −11.9% 11,245,881 $67.07 $754M −1,514,023 −$66M
SPGI - S&P Global 4.37% Reduce −11.9% 1,547,303 $425.34 $658M −208,321 −$259M
ADI - Analog Devices 4.04% Reduce −11.9% 1,911,491 $318.14 $608M −257,301 +$20M
CBRE - CBRE Group · CL A 3.54% Reduce −11.9% 3,931,976 $135.46 $533M −528,610 −$185M
AMAT - Applied Matls 3.46% Reduce −48.8% 1,521,843 $341.79 $520M −1,451,818 −$244M
V - VISA · CL A 3.45% Reduce −11.9% 1,718,158 $302.24 $519M −231,330 −$164M
ICE - Intercontinental Exchange 3.07% Reduce −11.9% 2,941,954 $157.28 $463M −396,028 −$78M
BLK - Blackrock 2.90% Reduce −11.9% 453,282 $961.71 $436M −60,970 −$114M
MSFT - Microsoft 2.74% Reduce −11.9% 1,112,265 $370.17 $412M −149,754 −$199M
CME - CME Group 2.72% Reduce −11.9% 1,386,346 $295.35 $409M −186,671 −$20M
FERG - Ferguson Enterprises 2.71% Reduce −11.9% 1,749,302 $233.26 $408M −235,552 −$34M
FAST - Fastenal 2.52% Reduce −11.9% 8,166,664 $46.40 $379M −1,100,224 +$7M
TMO - Thermo Fisher Scientific 2.51% Reduce −11.9% 769,698 $491.53 $378M −103,624 −$128M
LYV - Live Nation 2.50% Reduce −11.9% 2,465,059 $152.51 $376M −332,146 −$23M
UBER - UBER Technologies 2.48% Add +1.0% 5,193,864 $71.93 $374M +53,201 −$46M
AON - AON PLC · CL A 2.35% Reduce −11.9% 1,095,574 $322.78 $354M −147,444 −$85M
CP - Canadian Pacific 2.27% Add +3.2% 4,344,435 $78.66 $342M +136,577 +$32M
EFX - Equifax 2.14% Add +3.9% 1,791,379 $180.07 $323M +67,381 −$51M
A - Agilent Technologies 2.08% Reduce −11.9% 2,745,829 $113.98 $313M −369,809 −$111M
IQV - IQVIA 1.94% Reduce −11.9% 1,710,896 $170.54 $292M −230,248 −$146M
YUM - Yum Brands 1.87% Reduce −11.9% 1,811,796 $155.48 $282M −244,087 −$29M
TW - Tradeweb Mkts · CL A 1.85% Reduce −11.9% 2,367,041 $117.66 $279M −321,204 −$11M
AMT - American Tower 1.85% Reduce −11.9% 1,612,473 $172.58 $278M −218,052 −$43M
ENTG - Entegris 1.69% Reduce −11.9% 2,166,428 $117.24 $254M −292,725 +$47M
SSNC - SS&C Tech 1.68% Reduce −11.9% 3,753,093 $67.57 $254M −505,400 −$119M
ADBE - Adobe 1.65% Reduce −11.9% 1,019,710 $243.08 $248M −137,527 −$157M
TCOM - Trip Group 1.52% Reduce −1.7% 4,589,621 $49.79 $229M −80,157 −$107M
SPOT - Spotify Technology S A 1.42% New 439,353 $484.91 $213M +439,353 +$213M
ALC - Alcon AG 1.26% Reduce −11.9% 2,507,095 $75.35 $189M −338,026 −$35M
ORCL - Oracle 1.25% Add +49.1% 1,283,185 $147.11 $189M +422,508 +$21M
MCO - Moodys 1.14% Reduce −11.9% 392,513 $436.25 $171M −52,887 −$56M
FLUT - Flutter Entmt 0.93% Reduce −39.2% 1,375,776 $101.95 $140M −888,249 −$347M
TME - Tencent Music Entmt Group 0.83% Reduce −28.5% 13,382,595 $9.28 $124M −5,325,907 −$204M
LPLA - Lpl Finl 0.65% Reduce −12.0% 324,927 $300.83 $98M −44,141 −$34M
FWONK - Liberty Media Del 0.59% Reduce −39.3% 1,035,685 $85.02 $88M −671,214 −$80M

* 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 2025 Q4. 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