AFFILIATED MANAGERS GROUP

Ticker: AMG CUSIP: 008252108 Class: COM

HORIZON KINETICS ASSET MANAGEMENT LLC's Holding History (CIK: 0001056823)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 2,195 Value ($000) $633 Avg Close $258.45 Range $230.09 - $299.69

Q3 2025

Shares 1,978 Value ($000) $472 Avg Close $220.39 Range $194.74 - $250.14

Q2 2025

Shares 2,085 Value ($000) $410 Avg Close $173.47 Range $139.20 - $199.47

Q1 2025

Shares 2,085 Value ($000) $350 Avg Close $174.30 Range $151.61 - $191.09

Q4 2024

Shares 1,774 Value ($000) $328 Avg Close $186.57 Range $173.54 - $199.47

Q3 2024

Shares 1,351 Value ($000) $240 Avg Close $169.81 Range $152.32 - $189.75

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,195	$633	$258.45	$230.09 - $299.69
Q3 2025	1,978	$472	$220.39	$194.74 - $250.14
Q2 2025	2,085	$410	$173.47	$139.20 - $199.47
Q1 2025	2,085	$350	$174.30	$151.61 - $191.09
Q4 2024	1,774	$328	$186.57	$173.54 - $199.47
Q3 2024	1,351	$240	$169.81	$152.32 - $189.75