What did William Von Mueffling buy in Q2 2025?

William Von Mueffling opened 1 new position (ICLR) and added to 3 existing holdings in the Q2 2025 13F.

What did William Von Mueffling sell in Q2 2025?

William Von Mueffling exited 0 positions and trimmed 1.

What William Von Mueffling bought and sold in Q2 2025

In Q2 2025, William Von Mueffling (Cantillon Capital Management) opened 1 new position — including ICLR (0.4%), added to 3, trimmed 1. The book stood at $17.30B across 38 positions, filed Feb 17, 2026.

1New3Added1Trimmed0Exited

Share𝕏 in

New positions (1)

ICLRIcon Plc0.4% · $68M

Added to (3)

IBKRInteractive Brokers Gro-cl A+289% shares · 4.1% · $709M
FASTFastenal CO+94% shares · 2.3% · $391M
ALCAlcon AG+95% shares · 1.5% · $252M

Trimmed (1)

IQVIqvia Holdings Inc-24% shares · 1.4% · $239M

William Von Mueffling's other filings

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

William Von Mueffling's full portfolio →The whole cohort in Q2 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.