What did William Von Mueffling buy in Q4 2025?

William Von Mueffling opened 1 new position (LPLA) and added to 2 existing holdings in the Q4 2025 13F.

What did William Von Mueffling sell in Q4 2025?

William Von Mueffling exited 2 positions (ZTS, ECL) and trimmed 0.

What William Von Mueffling bought and sold in Q4 2025

In Q4 2025, William Von Mueffling (Cantillon Capital Management) opened 1 new position — including LPLA (0.7%), added to 2, exited 2 (ZTS, ECL). The book stood at $18.49B across 37 positions, filed Feb 11, 2026.

1New2Added0Trimmed2Exited

Share𝕏 in

New positions (1)

LPLALpl Financial Holdings Inc0.7% · $132M

Added to (2)

TWTradeweb Markets Inc-class A+39% shares · 1.6% · $289M
FWONKLiberty Media Corp-formula-c+46% shares · 0.9% · $168M

Exited (2)

ZTSZoetis Incwas 1.0% of book
ECLEcolab Incwas 0.1% of book

William Von Mueffling's other filings

Q1 2026 changes Q3 2025 changes Q2 2025 changes Q1 2025 changes Q4 2024 changes

William Von Mueffling's full portfolio →The whole cohort in Q4 2025 →

Changes vs the prior quarter's 13F, long US equity positions only (no shorts, options, or non-US listings). ADD/TRIM are share- count changes of ±20% or more. Sourced from SEC EDGAR. Not investment advice.