AFFILIATED MANAGERS GROUP

Ticker: AMG CUSIP: 008252108 Class: COM

NORTH STAR ASSET MANAGEMENT INC's Holding History (CIK: 0001056559)

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

Q4 2025

Shares 77,228 Value ($000) $22,263 Avg Close $258.45 Range $230.09 - $299.69

Q3 2025

Shares 85,334 Value ($000) $20,346 Avg Close $220.39 Range $194.74 - $250.14

Q2 2025

Shares 102,081 Value ($000) $20,086 Avg Close $173.47 Range $139.20 - $199.47

Q1 2025

Shares 102,144 Value ($000) $17,163 Avg Close $174.30 Range $151.61 - $191.09

Q4 2024

Shares 101,921 Value ($000) $18,847 Avg Close $186.57 Range $173.54 - $199.47

Q3 2024

Shares 101,338 Value ($000) $18,018 Avg Close $169.81 Range $152.32 - $189.75

Q2 2024

Shares 100,015 Value ($000) $15,625 Avg Close $159.16 Range $147.08 - $169.59

Q1 2024

Shares 99,817 Value ($000) $16,716 Avg Close $155.40 Range $145.30 - $167.84

Q4 2023

Shares 97,474 Value ($000) $14,760 Avg Close $134.30 Range $120.16 - $156.31

Q3 2023

Shares 97,254 Value ($000) $12,676 Avg Close $139.81 Range $129.01 - $163.83

Q2 2023

Shares 96,393 Value ($000) $14,448 Avg Close $143.06 Range $135.39 - $151.92

Q1 2023

Shares 95,339 Value ($000) $13,578 Avg Close $157.88 Range $132.31 - $180.50

Q4 2022

Shares 95,611 Value ($000) $15,148 Avg Close $141.36 Range $108.04 - $163.24

Q3 2022

Shares 95,060 Value ($000) $10,632 Avg Close $125.39 Range $109.48 - $141.92

Q2 2022

Shares 92,852 Value ($000) $10,827 Avg Close $128.58 Range $112.28 - $146.71

Q1 2022

Shares 91,267 Value ($000) $12,865 Avg Close $143.53 Range $121.29 - $171.22

Q4 2021

Shares 90,468 Value ($000) $14,883 Avg Close $167.52 Range $146.96 - $191.42

Q3 2021

Shares 90,937 Value ($000) $13,739 Avg Close $163.56 Range $146.02 - $180.77

Q2 2021

Shares 90,787 Value ($000) $14,000 Avg Close $159.33 Range $147.97 - $176.63

Q1 2021

Shares 90,349 Value ($000) $13,465 Avg Close $130.58 Range $98.76 - $153.37

Q4 2020

Shares 92,491 Value ($000) $9,406 Avg Close $86.25 Range $66.34 - $103.21

Q3 2020

Shares 93,966 Value ($000) $6,425 Avg Close $69.80 Range $62.10 - $75.77

Q2 2020

Shares 91,503 Value ($000) $6,822 Avg Close $67.48 Range $53.23 - $82.32

Q1 2020

Shares 90,351 Value ($000) $5,343 Avg Close $74.64 Range $44.30 - $88.80

Q4 2019

Shares 91,935 Value ($000) $7,790 Avg Close $81.44 Range $70.43 - $87.94

Q3 2019

Shares 101,252 Value ($000) $8,439 Avg Close $82.65 Range $73.22 - $92.84

Q2 2019

Shares 100,317 Value ($000) $9,243 Avg Close $96.65 Range $82.01 - $113.84

Q1 2019

Shares 93,884 Value ($000) $10,056 Avg Close $104.33 Range $93.26 - $110.96

Q4 2018

Shares 91,291 Value ($000) $8,896 Avg Close $110.59 Range $86.74 - $136.36

Q3 2018

Shares 91,036 Value ($000) $12,447 Avg Close $144.30 Range $133.37 - $159.64

Q2 2018

Shares 87,205 Value ($000) $12,965 Avg Close $160.74 Range $145.08 - $182.71

Q1 2018

Shares 84,844 Value ($000) $16,085 Avg Close $189.64 Range $169.45 - $211.08

Q4 2017

Shares 84,966 Value ($000) $17,440 Avg Close $188.42 Range $173.99 - $202.01

Q3 2017

Shares 86,131 Value ($000) $16,350 Avg Close $172.79 Range $161.15 - $186.54

Q2 2017

Shares 87,928 Value ($000) $14,584 Avg Close $154.87 Range $144.44 - $164.19

Q1 2017

Shares 88,323 Value ($000) $14,479 Avg Close $153.31 Range $135.07 - $166.39

Q4 2016

Shares 88,537 Value ($000) $12,865 Avg Close $140.58 Range $126.32 - $157.66

Q3 2016

Shares 82,692 Value ($000) $11,965 Avg Close $138.59 Range $126.84 - $143.96

Q2 2016

Shares 79,211 Value ($000) $11,150 Avg Close $158.47 Range $126.98 - $174.12

Q1 2016

Shares 77,304 Value ($000) $12,555 Avg Close $135.06 Range $112.27 - $159.84

Q4 2015

Shares 61,298 Value ($000) $9,793 Avg Close $166.43 Range $137.16 - $184.66

Q3 2015

Shares 59,893 Value ($000) $10,241 Avg Close $190.37 Range $159.30 - $214.73

Q2 2015

Shares 56,340 Value ($000) $12,316 Avg Close $215.27 Range $205.22 - $223.28

Q1 2015

Shares 56,572 Value ($000) $12,151 Avg Close $204.27 Range $185.26 - $214.40

Q4 2014

Shares 57,165 Value ($000) $12,133 Avg Close $192.32 Range $168.87 - $209.59

Q3 2014

Shares 56,895 Value ($000) $11,399 Avg Close $197.54 Range $186.21 - $207.58

Q2 2014

Shares 57,137 Value ($000) $11,736 Avg Close $187.17 Range $171.21 - $199.62

Q1 2014

Shares 58,185 Value ($000) $11,640 Avg Close $190.16 Range $175.09 - $212.40

Q4 2013

Shares 57,683 Value ($000) $12,510 Avg Close $193.15 Range $175.92 - $210.55

Q3 2013

Shares 59,509 Value ($000) $10,869 Avg Close $171.93 Range $151.62 - $183.39

Q2 2013

Shares 66,674 Value ($000) $10,931 Avg Close $153.14 Range $138.12 - $166.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	77,228	$22,263	$258.45	$230.09 - $299.69
Q3 2025	85,334	$20,346	$220.39	$194.74 - $250.14
Q2 2025	102,081	$20,086	$173.47	$139.20 - $199.47
Q1 2025	102,144	$17,163	$174.30	$151.61 - $191.09
Q4 2024	101,921	$18,847	$186.57	$173.54 - $199.47
Q3 2024	101,338	$18,018	$169.81	$152.32 - $189.75
Q2 2024	100,015	$15,625	$159.16	$147.08 - $169.59
Q1 2024	99,817	$16,716	$155.40	$145.30 - $167.84
Q4 2023	97,474	$14,760	$134.30	$120.16 - $156.31
Q3 2023	97,254	$12,676	$139.81	$129.01 - $163.83
Q2 2023	96,393	$14,448	$143.06	$135.39 - $151.92
Q1 2023	95,339	$13,578	$157.88	$132.31 - $180.50
Q4 2022	95,611	$15,148	$141.36	$108.04 - $163.24
Q3 2022	95,060	$10,632	$125.39	$109.48 - $141.92
Q2 2022	92,852	$10,827	$128.58	$112.28 - $146.71
Q1 2022	91,267	$12,865	$143.53	$121.29 - $171.22
Q4 2021	90,468	$14,883	$167.52	$146.96 - $191.42
Q3 2021	90,937	$13,739	$163.56	$146.02 - $180.77
Q2 2021	90,787	$14,000	$159.33	$147.97 - $176.63
Q1 2021	90,349	$13,465	$130.58	$98.76 - $153.37
Q4 2020	92,491	$9,406	$86.25	$66.34 - $103.21
Q3 2020	93,966	$6,425	$69.80	$62.10 - $75.77
Q2 2020	91,503	$6,822	$67.48	$53.23 - $82.32
Q1 2020	90,351	$5,343	$74.64	$44.30 - $88.80
Q4 2019	91,935	$7,790	$81.44	$70.43 - $87.94
Q3 2019	101,252	$8,439	$82.65	$73.22 - $92.84
Q2 2019	100,317	$9,243	$96.65	$82.01 - $113.84
Q1 2019	93,884	$10,056	$104.33	$93.26 - $110.96
Q4 2018	91,291	$8,896	$110.59	$86.74 - $136.36
Q3 2018	91,036	$12,447	$144.30	$133.37 - $159.64
Q2 2018	87,205	$12,965	$160.74	$145.08 - $182.71
Q1 2018	84,844	$16,085	$189.64	$169.45 - $211.08
Q4 2017	84,966	$17,440	$188.42	$173.99 - $202.01
Q3 2017	86,131	$16,350	$172.79	$161.15 - $186.54
Q2 2017	87,928	$14,584	$154.87	$144.44 - $164.19
Q1 2017	88,323	$14,479	$153.31	$135.07 - $166.39
Q4 2016	88,537	$12,865	$140.58	$126.32 - $157.66
Q3 2016	82,692	$11,965	$138.59	$126.84 - $143.96
Q2 2016	79,211	$11,150	$158.47	$126.98 - $174.12
Q1 2016	77,304	$12,555	$135.06	$112.27 - $159.84
Q4 2015	61,298	$9,793	$166.43	$137.16 - $184.66
Q3 2015	59,893	$10,241	$190.37	$159.30 - $214.73
Q2 2015	56,340	$12,316	$215.27	$205.22 - $223.28
Q1 2015	56,572	$12,151	$204.27	$185.26 - $214.40
Q4 2014	57,165	$12,133	$192.32	$168.87 - $209.59
Q3 2014	56,895	$11,399	$197.54	$186.21 - $207.58
Q2 2014	57,137	$11,736	$187.17	$171.21 - $199.62
Q1 2014	58,185	$11,640	$190.16	$175.09 - $212.40
Q4 2013	57,683	$12,510	$193.15	$175.92 - $210.55
Q3 2013	59,509	$10,869	$171.93	$151.62 - $183.39
Q2 2013	66,674	$10,931	$153.14	$138.12 - $166.12