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William von Mueffling

William von Mueffling Cantillon Capital Management

AUM $665M Turnover 28.95%
1-Year Est. Return 25.91%
 

William von Mueffling is the founder of Cantillon Capital Management, a firm known for concentrated global equity portfolios of high-quality companies. Cantillon’s process emphasizes durable competitive advantages and multi-year holding periods. The firm’s 13F disclosures are tracked by investors seeking institutional quality-growth exposure.

This Fund
S&P 500
This Quarter Est. Return
+19%
1 Year Est. Return
+25.91%
3 Year Est. Return
+105.25%
5 Year Est. Return
+112.09%
10 Year Est. Return
+580.93%
AUM
$665M
AUM Growth
-$14.4B
Cap. Flow
-$16B
Cap. Flow %
-2,398.3%
Top 10 Hldgs %
61.74%
Holding
38
New
–
Increased
–
Reduced
27
Closed
11
Avg Time Held
6.8 years
Top 10 Avg Time Held
3.6 years
Top 20 Avg Time Held
4.7 years

Top Buys

No buys this quarter

Top Sells

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$1.55B
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$1.28B
3
TSM icon
TSMC
TSM
+$965M
4
IBKR icon
Interactive Brokers
IBKR
+$893M
5
ADI icon
Analog Devices
ADI
+$722M

Sector Composition

Rank Sector Weight
1 Technology 42.65%
2 Financials 25.96%
3 Communication Services 13.71%
4 Industrials 8.19%
5 Real Estate 3.67%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow Held Since
AVGO icon
1
Broadcom
AVGO
$1.57T
$70.5M 10.61%
186,760
-3,869,242
-95% -$1.55B
2017 Q1
37 quarters
GOOGL icon
2
Alphabet (Google) Class A
GOOGL
$4.17T
$61.1M 9.19%
171,066
-3,543,995
-95% -$1.28B
2015 Q4
42 quarters
TSM icon
3
TSMC
TSM
$2.14T
$54.8M 8.24%
114,820
-2,378,731
-95% -$965M
2017 Q3
35 quarters
IBKR icon
4
Interactive Brokers
IBKR
$37.5B
$45.1M 6.78%
517,833
-10,728,048
-95% -$893M
2017 Q2
36 quarters
AMAT icon
5
Applied Materials
AMAT
$325B
$36.3M 5.45%
50,176
-1,471,667
-97% -$679M
2020 Q1
25 quarters
ADI icon
6
Analog Devices
ADI
$192B
$35M 5.26%
88,014
-1,823,477
-95% -$722M
2013 Q2
52 quarters
SPGI icon
7
S&P Global
SPGI
$127B
$29M 4.36%
71,249
-1,476,054
-95% -$623M
2016 Q2
40 quarters
V icon
8
Visa
V
$756B
$28.7M 4.31%
83,643
-1,634,515
-95% -$525M
2015 Q4
42 quarters
MSFT icon
9
Microsoft
MSFT
$3.93T
$25.7M 3.86%
68,901
-1,043,364
-94% -$422M
2020 Q1
25 quarters
CBRE icon
10
CBRE Group
CBRE
$38.5B
$24.4M 3.67%
181,083
-3,750,893
-95% -$517M
2016 Q1
41 quarters
LYV icon
11
Live Nation Entertainment
LYV
$39.7B
$20.8M 3.12%
113,503
-2,351,556
-95% -$387M
2023 Q2
12 quarters
BLK icon
12
Blackrock
BLK
$176B
$20.1M 3.02%
20,873
-432,409
-95% -$447M
2021 Q4
18 quarters
FERG icon
13
Ferguson
FERG
$44.8B
$19.1M 2.87%
80,548
-1,668,754
-95% -$403M
2023 Q1
13 quarters
FAST icon
14
Fastenal
FAST
$58.5B
$18.1M 2.72%
376,044
-7,790,620
-95% -$354M
2018 Q2
32 quarters
ENTG icon
15
Entegris
ENTG
$21.2B
$17.9M 2.7%
99,756
-2,066,672
-95% -$298M
2019 Q3
27 quarters
CP icon
16
Canadian Pacific Kansas City
CP
$76.8B
$17.3M 2.6%
199,860
-4,144,575
-95% -$355M
2023 Q3
11 quarters
UBER icon
17
Uber
UBER
$144B
$17.2M 2.59%
238,965
-4,954,899
-95% -$363M
2024 Q2
8 quarters
A icon
18
Agilent Technologies
A
$48.8B
$16.8M 2.53%
126,437
-2,619,392
-95% -$319M
2015 Q4
42 quarters
ICE icon
19
Intercontinental Exchange
ICE
$90.7B
$16.7M 2.51%
135,468
-2,806,486
-95% -$421M
2014 Q4
46 quarters
ORCL icon
20
Oracle
ORCL
$389B
$15.5M 2.32%
105,457
-1,177,728
-92% -$213M
2024 Q1
9 quarters
CME icon
21
CME Group
CME
$106B
$14.1M 2.12%
63,835
-1,322,511
-95% -$366M
2014 Q4
46 quarters
YUM icon
22
Yum! Brands
YUM
$41.1B
$13.3M 2.01%
83,427
-1,728,369
-95% -$268M
2024 Q1
9 quarters
TW icon
23
Tradeweb Markets
TW
$23.9B
$10.9M 1.63%
108,989
-2,258,052
-95% -$245M
2023 Q2
12 quarters
SSNC icon
24
SS&C Technologies
SSNC
$19.7B
$10.7M 1.61%
172,816
-3,580,277
-95% -$243M
2016 Q3
39 quarters
SPOT icon
25
Spotify
SPOT
$109B
$9.28M 1.4%
20,216
-419,137
-95% -$200M
2026 Q1
1 quarter
1
2

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William von Mueffling's Q2 2026 Portfolio in Review

As of Q2 2026, William von Mueffling held 38 positions worth $665M, down 96% from $15.1B the previous quarter. Its ten largest holdings account for 62% of the portfolio.

William von Mueffling withdrew a net $16B in Q2 2026, closing 11 positions and reducing 27 holdings. Its most notable exit was Thermo Fisher Scientific, an estimated $378M position sold in full.

By sector, the portfolio is most concentrated in Technology at 43% of assets, up from 33% a quarter earlier, followed by Financials and Communication Services.

  • William von Mueffling's biggest Q2 2026 reduction was Broadcom, cutting an estimated $1.55B.
  • William von Mueffling fully exited Thermo Fisher Scientific in Q2 2026, selling an estimated $378M.
  • William von Mueffling's ten largest holdings make up 62% of its $665M portfolio in Q2 2026.
  • William von Mueffling opened 0 new positions and closed 11 in Q2 2026.
  • William von Mueffling's portfolio value fell 96% quarter-over-quarter to $665M.

Based on Cantillon Capital Management's 13F filing for Q2 2026, filed 29 Jul 2026.