William von Mueffling Cantillon Capital Management
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.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
LPL Financial
LPLA
|
+$131M |
| 2 |
Tradeweb Markets
TW
|
+$80.9M |
| 3 |
Adobe
ADBE
|
+$53.4M |
| 4 |
Liberty Media Series C
FWONK
|
+$53.1M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$9.06M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Zoetis
ZTS
|
+$176M |
| 2 |
Broadcom
AVGO
|
+$34.1M |
| 3 |
Ecolab
ECL
|
+$21.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 32.38% |
| 2 | Financials | 27.2% |
| 3 | Communication Services | 11.97% |
| 4 | Healthcare | 8.61% |
| 5 | Industrials | 8.1% |
Similar funds
William von Mueffling's Q4 2025 Portfolio in Review
As of Q4 2025, William von Mueffling held 39 positions worth $18.5B, up 1.8% from $18.2B the previous quarter. Its ten largest holdings account for 48% of the portfolio.
William von Mueffling's Q4 2025 filing shows 1 new, 35 increased, 1 reduced and 2 closed positions. Its largest new stake was LPL Financial: 369,068 shares worth $132M. The largest sale was Zoetis, an estimated $176M.
By sector, the portfolio is most concentrated in Technology at 32% of assets, up from 32% a quarter earlier, followed by Financials and Communication Services.
- William von Mueffling's largest Q4 2025 buy was LPL Financial: 369,068 shares worth $132M.
- William von Mueffling added most to Tradeweb Markets in Q4 2025, an estimated $80.9M increase.
- William von Mueffling's biggest Q4 2025 reduction was Broadcom, cutting an estimated $34.1M.
- William von Mueffling fully exited Zoetis in Q4 2025, selling an estimated $176M.
- William von Mueffling's ten largest holdings make up 48% of its $18.5B portfolio in Q4 2025.
- William von Mueffling opened 1 new position and closed 2 in Q4 2025.
- William von Mueffling's portfolio value rose 1.8% quarter-over-quarter to $18.5B.
Based on Cantillon Capital Management's 13F filing for Q4 2025, filed 11 Feb 2026.