AMG | AFFILIATED MANAGERS GROUP IN

CUSIP: 008252108

1 Funds Holding

6K Total Shares

$2M Total Value

$8.0B

Market Cap

12.5

P/E Ratio

7.6

Forward P/E

$22.74

EPS (TTM)

0.01%

Dividend Yield

$671M

Cash

$2.7B

Total Debt

27M

Shares Out

$151.30

$334.78

52-Week Range

Fund / Manager Click to search	Shares	Value	% of Portfolio	Cost Basis	Est. Return
Longleaf Partners\|Mason Hawkins	5.6K	$2M	0.07%	$134.77	+144.71%

Quarter:

Fund / Manager Click to search	Action	Change	Shares After	Value	Price
2025-Q4
Longleaf Partners	SELL	-18.7%	5.6K	$2M	$257.65
2025-Q3
Ariel Investments	SELL	-6.7%	1.3M	$301M	$218.35
Dodge & Cox	SELL	-20.0%	2.4K	$572232	$218.35
2025-Q2
Ariel Investments	SELL	-3.7%	1.4M	$267M	$176.07
Longleaf Partners	SELL	-98.6%	6.8K	$1M	$176.07
2025-Q1
Ariel Investments	SELL	-1.2%	1.4M	$236M	$171.81
Longleaf Partners	SELL	-31.7%	479.8K	$81M	$171.81
Dodge & Cox	SELL	-53.9%	3.0K	$504090	$171.81
2024-Q4
Ariel Investments	SELL	-1.9%	1.4M	$263M	$186.59
Longleaf Partners	SELL	-3.1%	702.5K	$130M	$186.59
Dodge & Cox	BUY	NEW	6.5K	$1M	$186.59
2024-Q3
Ariel Investments	BUY	+0.7%	1.5M	$258M	$170.68
Longleaf Partners	SELL	-8.9%	724.8K	$129M	$170.68
2024-Q2
Ariel Investments	BUY	+8.7%	1.4M	$225M	$158.97
Longleaf Partners	SELL	-5.1%	795.2K	$124M	$158.97
2024-Q1
Ariel Investments	BUY	+6.8%	1.3M	$222M	$156.22
Longleaf Partners	SELL	-5.0%	837.9K	$140M	$156.22
2023-Q4
Ariel Investments	BUY	+4.6%	1.2M	$188M	$132.12
Longleaf Partners	SELL	-2.8%	882.4K	$134M	$132.12
2023-Q3
Ariel Investments	BUY	+11.3%	1.2M	$155M	$134.77
Longleaf Partners	SELL	-1.4%	908.0K	$118M	$134.77
2023-Q2
Ariel Investments	SELL	-2.3%	1.1M	$160M	$142.55
Longleaf Partners	SELL	-0.2%	921.0K	$138M	$142.55
2023-Q1
Ariel Investments	SELL	-3.2%	1.1M	$156M	$162.43
Longleaf Partners	SELL	-0.9%	923.4K	$132M	$162.43
2022-Q4
Longleaf Partners	SELL	-42.4%	931.8K	$148M	$153.87
Ariel Investments	SELL	-1.5%	1.1M	$179M	$153.87
2022-Q3
Longleaf Partners	SELL	-7.7%	1.6M	$181M	$125.60
Ariel Investments	BUY	+3.2%	1.1M	$128M	$125.60
2022-Q2
Longleaf Partners	SELL	-1.3%	1.8M	$204M	$130.10
Ariel Investments	BUY	+18.4%	1.1M	$129M	$130.10
2022-Q1
Longleaf Partners	BUY	+15.5%	1.8M	$250M	$142.67
Ariel Investments	BUY	+4.4%	937.2K	$132M	$142.67
2021-Q4
Longleaf Partners	SELL	-3.9%	1.5M	$253M	$165.98
Ariel Investments	BUY	+6.5%	897.6K	$148M	$165.98
2021-Q3
Longleaf Partners	BUY	+5.9%	1.6M	$242M	$164.61
Ariel Investments	BUY	+1.9%	842.8K	$127M	$164.61
2021-Q2
Longleaf Partners	BUY	+18.9%	1.5M	$233M	$158.75
Ariel Investments	BUY	+0.2%	827.5K	$128M	$158.75
2021-Q1
Longleaf Partners	SELL	-21.4%	1.3M	$189M	$139.13
Ariel Investments	BUY	+4.3%	825.6K	$123M	$139.13
2020-Q4
Longleaf Partners	BUY	+15.4%	1.6M	$165M	$85.50
Ariel Investments	BUY	+5.6%	791.5K	$80M	$85.50
2020-Q3
Longleaf Partners	BUY	+1.1%	1.4M	$96M	$70.42
Ariel Investments	BUY	+0.0%	749.4K	$51M	$70.42
2020-Q2
Longleaf Partners	SELL	-1.1%	1.4M	$103M	$66.60
Ariel Investments	BUY	+13.7%	749.3K	$56M	$66.60
2020-Q1
Longleaf Partners	BUY	+0.0%	1.4M	$83M	$81.68
Ariel Investments	BUY	+11.2%	659.2K	$39M	$81.68
2019-Q4
Longleaf Partners	SELL	-7.9%	1.4M	$119M	$84.06
Ariel Investments	BUY	+1.0%	592.7K	$50M	$84.06
Jensen Investment Management	SELL	EXIT	—	—	$84.06
2019-Q3
Longleaf Partners	SELL	-4.8%	1.5M	$127M	$85.32
Ariel Investments	BUY	+28.2%	586.7K	$49M	$85.32
2019-Q2
Longleaf Partners	SELL	-5.5%	1.6M	$147M	$91.34
Ariel Investments	BUY	+12.9%	457.6K	$42M	$91.34
2019-Q1
Longleaf Partners	SELL	-8.0%	1.7M	$181M	$106.58
Ariel Investments	BUY	+0.6%	405.4K	$43M	$106.58
2018-Q4
Longleaf Partners	BUY	+56.6%	1.8M	$179M	$113.33
Ariel Investments	BUY	+50.4%	403.0K	$39M	$113.33
Jensen Investment Management	BUY	+53.8%	6.9K	$668000	$113.33
Torray Investment Partners	SELL	EXIT	—	—	$113.33
2018-Q3
Longleaf Partners	BUY	NEW	1.2M	$161M	$148.02
Ariel Investments	BUY	NEW	267.9K	$37M	$148.02
Torray Investment Partners	BUY	+0.8%	4.8K	$658000	$148.02
Jensen Investment Management	BUY	+33.9%	4.5K	$610000	$148.02
2018-Q2
Torray Investment Partners	SELL	-11.1%	4.8K	$710000	$164.81
Jensen Investment Management	BUY	+19.4%	3.3K	$495000	$164.81
2018-Q1
Torray Investment Partners	BUY	+5.0%	5.4K	$1M	$191.80
Jensen Investment Management	BUY	+53.3%	2.8K	$529000	$191.80

6 Months Insider Sentiment

Buy $0 Sell $0

0 Buys

0 Sells

+0 Net

2 Grants

Largest

$39K Alvingham

Date	Insider Click to search	Role Click to search	Type	Shares	Price	Value
Dec 23, 2025	Jay C. Horgen	Chief Executive Officer	GRANT	4.0K	—	—
Nov 25, 2025	Tracy P. Palandjian	Director	GRANT	3.5K	—	—
Nov 07, 2025	Karen L. Alvingham	Director	EXERCISE	560	$69.63	$39K

AMG | AFFILIATED MANAGERS GROUP IN

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