Question 1

How many shares of BLK does CANTILLON CAPITAL MANAGEMENT LLC own?

Accepted Answer

As of 2026-Q1, CANTILLON CAPITAL MANAGEMENT LLC holds 453,282 shares of BLK (BLACKROCK INC).

Question 2

What is CANTILLON CAPITAL MANAGEMENT LLC's BLK position worth?

Accepted Answer

As of 2026-Q1, CANTILLON CAPITAL MANAGEMENT LLC's BLK position is worth $435.9M.

Question 3

Is CANTILLON CAPITAL MANAGEMENT LLC buying or selling BLK?

Accepted Answer

In 2026-Q1, CANTILLON CAPITAL MANAGEMENT LLC decreased their BLK position (-11.9% change in shares).

Question 4

When did CANTILLON CAPITAL MANAGEMENT LLC first buy BLK?

Accepted Answer

Based on available 13F filings, CANTILLON CAPITAL MANAGEMENT LLC first reported a position in BLK in 2024-Q4. They have held the position across 6 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	453,282	-11.9%	$435.9M	2.9%	$1,052.59	0
2025-Q4	Increased	514,252	+0.8%	$550.4M	3.0%	$1,083.31	55
2025-Q3	Decreased	510,402	-1.1%	$595.1M	3.3%	$1,169.87	0
2025-Q2	Increased	516,027	+10.3%	$541.4M	3.1%	$1,037.84	65
2025-Q1	Decreased	467,854	-3.3%	$442.8M	2.9%	$932.75	0
2024-Q4	New	483,793	-	$495.9M	3.0%	$1,006.79	82

BLK6 quarters

BLK
6 quarters