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William von Mueffling Cantillon Capital Management

AUM $665M
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

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
TCOM icon
26
Trip.com Group
TCOM
$29B
$8.54M 1.28%
214,242
-4,375,379
-95% -$217M
MCO icon
27
Moody's
MCO
$87.2B
$8.19M 1.23%
18,075
-374,438
-95% -$168M
ADBE icon
28
Adobe
ADBE
$109B
– –
-1,019,710
Closed -$248M
ALC icon
29
Alcon
ALC
$35.6B
– –
-2,507,095
Closed -$189M
AMT icon
30
American Tower
AMT
$81.9B
– –
-1,612,473
Closed -$278M
AON icon
31
Aon
AON
$75.3B
– –
-1,095,574
Closed -$354M
EFX icon
32
Equifax
EFX
$22.6B
– –
-1,791,379
Closed -$323M
FWONK icon
33
Liberty Media Series C
FWONK
$26.3B
– –
-1,035,685
Closed -$88.1M
IQV icon
34
IQVIA
IQV
$42.8B
– –
-1,710,896
Closed -$292M
LPLA icon
35
LPL Financial
LPLA
$28.5B
– –
-324,927
Closed -$97.7M
TME icon
36
Tencent Music
TME
$14.4B
– –
-13,382,595
Closed -$124M
TMO icon
37
Thermo Fisher Scientific
TMO
$233B
– –
-769,698
Closed -$378M
FLUT icon
38
Flutter Entertainment
FLUT
$17.8B
– –
-1,375,776
Closed -$140M
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.