DOSSIER · 13F-HR · Q1 2026

CANTILLON CAPITAL MANAGEMENT LLC

CANTILLON's family office based in London, UK $15.1B in tracked AUM across 76 positions as of Q1 2026.

C
CANTILLON·London, UK·Family Office
CIK 0001279936 · last filed Mar 31, 2026
Total AUM
$15.1B
12.2%
vs prior
Holdings
76
positions
Whale Score
68
68
tracked
Activity
no data
changes this Q
Top sector
Tech
43% weight
concentration
AI Analysis · Q1 2026 · Q1 2026
Comprehensive Analysis of CANTILLON CAPITAL MANAGEMENT LLC (SEC 13F)
1. Portfolio Overview

Cantillon Capital Management LLC reported a significant contraction in portfolio value for the quarter ended September 30, 2025. The total assets under management (AUM) decreased by 25.1%, dropping from $17.30 billion to $12.95 billion. This reduction is not solely attributable to market performance but is largely the result of a substantial shift in strategy involving the liquidation of...

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
AVGO
BROADCOM INC
$1.3B4.1M8.3%
02
GOOGL
ALPHABET INC
$1.1B3.7M7.1%
03
TSM
TAIWAN SEMICONDUCTOR MANUFAC
$843M2.5M5.6%
04
IBKR
INTERACTIVE BROKERS GROUP IN
$754M11.2M5.0%
05
SPGI
S&P GLOBAL INC
$658M1.5M4.4%
06
ADI
ANALOG DEVICES INC
$608M1.9M4.0%
07
CBRE
CBRE GROUP INC
$533M3.9M3.5%
08
AMAT
APPLIED MATLS INC
$520M1.5M3.5%
09
V
VISA INC
$519M1.7M3.5%
10
ICE
INTERCONTINENTAL EXCHANGE IN
$463M2.9M3.1%

Filing history

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