AFFILIATED MANAGERS GROUP

Ticker: AMG CUSIP: 008252108 Class: COM

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q4 2025

Shares 35,430 Value ($000) $10,214 Avg Close $258.45 Range $230.09 - $299.69

Q3 2025

Shares 35,430 Value ($000) $8,448 Avg Close $220.39 Range $194.74 - $250.14

Q2 2025

Shares 35,430 Value ($000) $6,972 Avg Close $173.47 Range $139.20 - $199.47

Q1 2025

Shares 35,430 Value ($000) $5,953 Avg Close $174.30 Range $151.61 - $191.09

Q4 2024

Shares 35,430 Value ($000) $6,552 Avg Close $186.57 Range $173.54 - $199.47

Q3 2024

Shares 35,430 Value ($000) $6,299 Avg Close $169.81 Range $152.32 - $189.75

Q2 2024

Shares 35,430 Value ($000) $5,535 Avg Close $159.16 Range $147.08 - $169.59

Q1 2024

Shares 35,430 Value ($000) $5,933 Avg Close $155.40 Range $145.30 - $167.84

Q4 2023

Shares 35,430 Value ($000) $5,365 Avg Close $134.30 Range $120.16 - $156.31

Q3 2023

Shares 35,430 Value ($000) $4,618 Avg Close $139.81 Range $129.01 - $163.83

Q2 2023

Shares 35,430 Value ($000) $5,311 Avg Close $143.06 Range $135.39 - $151.92

Q1 2023

Shares 35,430 Value ($000) $5,046 Avg Close $157.88 Range $132.31 - $180.50

Q4 2022

Shares 35,430 Value ($000) $5,613 Avg Close $141.36 Range $108.04 - $163.24

Q3 2022

Shares 35,430 Value ($000) $3,963 Avg Close $125.39 Range $109.48 - $141.92

Q2 2022

Shares 35,430 Value ($000) $4,131 Avg Close $128.58 Range $112.28 - $146.71

Q1 2022

Shares 35,430 Value ($000) $4,994 Avg Close $143.53 Range $121.29 - $171.22

Q4 2021

Shares 35,430 Value ($000) $5,829 Avg Close $167.52 Range $146.96 - $191.42

Q3 2021

Shares 35,430 Value ($000) $5,353 Avg Close $163.56 Range $146.02 - $180.77

Q2 2021

Shares 35,430 Value ($000) $5,464 Avg Close $159.33 Range $147.97 - $176.63

Q1 2021

Shares 35,430 Value ($000) $5,280 Avg Close $130.58 Range $98.76 - $153.37

Q4 2020

Shares 35,430 Value ($000) $3,603 Avg Close $86.25 Range $66.34 - $103.21

Q3 2020

Shares 35,430 Value ($000) $2,423 Avg Close $69.80 Range $62.10 - $75.77

Q2 2020

Shares 35,430 Value ($000) $2,642 Avg Close $67.48 Range $53.23 - $82.32

Q1 2020

Shares 35,430 Value ($000) $2,095 Avg Close $74.64 Range $44.30 - $88.80

Q4 2019

Shares 35,430 Value ($000) $3,002 Avg Close $81.44 Range $70.43 - $87.94

Q3 2019

Shares 35,430 Value ($000) $2,953 Avg Close $82.65 Range $73.22 - $92.84

Q2 2019

Shares 76,981 Value ($000) $7,093 Avg Close $96.65 Range $82.01 - $113.84

Q1 2019

Shares 85,375 Value ($000) $9,145 Avg Close $104.33 Range $93.26 - $110.96

Q4 2018

Shares 84,876 Value ($000) $8,270 Avg Close $110.59 Range $86.74 - $136.36

Q3 2018

Shares 110,618 Value ($000) $15,124 Avg Close $144.30 Range $133.37 - $159.64

Q2 2018

Shares 209,528 Value ($000) $31,151 Avg Close $160.74 Range $145.08 - $182.71

Q1 2018

Shares 221,882 Value ($000) $42,065 Avg Close $189.64 Range $169.45 - $211.08

Q4 2017

Shares 230,919 Value ($000) $47,396 Avg Close $188.42 Range $173.99 - $202.01

Q3 2017

Shares 226,214 Value ($000) $42,942 Avg Close $172.79 Range $161.15 - $186.54

Q2 2017

Shares 111,997 Value ($000) $18,576 Avg Close $154.87 Range $144.44 - $164.19

Q1 2015

Shares 2,387 Value ($000) $513 Avg Close $204.27 Range $185.26 - $214.40

Q4 2014

Shares 2,387 Value ($000) $507 Avg Close $192.32 Range $168.87 - $209.59

Q3 2014

Shares 4,022 Value ($000) $806 Avg Close $197.54 Range $186.21 - $207.58

Q2 2014

Shares 7,187 Value ($000) $1,476 Avg Close $187.17 Range $171.21 - $199.62

Q1 2014

Shares 25,182 Value ($000) $5,038 Avg Close $190.16 Range $175.09 - $212.40

Q4 2013

Shares 4,966 Value ($000) $1,077 Avg Close $193.15 Range $175.92 - $210.55

Q3 2013

Shares 4,152 Value ($000) $758 Avg Close $171.93 Range $151.62 - $183.39

Q2 2013

Shares 7,657 Value ($000) $1,255 Avg Close $153.14 Range $138.12 - $166.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	35,430	$10,214	$258.45	$230.09 - $299.69
Q3 2025	35,430	$8,448	$220.39	$194.74 - $250.14
Q2 2025	35,430	$6,972	$173.47	$139.20 - $199.47
Q1 2025	35,430	$5,953	$174.30	$151.61 - $191.09
Q4 2024	35,430	$6,552	$186.57	$173.54 - $199.47
Q3 2024	35,430	$6,299	$169.81	$152.32 - $189.75
Q2 2024	35,430	$5,535	$159.16	$147.08 - $169.59
Q1 2024	35,430	$5,933	$155.40	$145.30 - $167.84
Q4 2023	35,430	$5,365	$134.30	$120.16 - $156.31
Q3 2023	35,430	$4,618	$139.81	$129.01 - $163.83
Q2 2023	35,430	$5,311	$143.06	$135.39 - $151.92
Q1 2023	35,430	$5,046	$157.88	$132.31 - $180.50
Q4 2022	35,430	$5,613	$141.36	$108.04 - $163.24
Q3 2022	35,430	$3,963	$125.39	$109.48 - $141.92
Q2 2022	35,430	$4,131	$128.58	$112.28 - $146.71
Q1 2022	35,430	$4,994	$143.53	$121.29 - $171.22
Q4 2021	35,430	$5,829	$167.52	$146.96 - $191.42
Q3 2021	35,430	$5,353	$163.56	$146.02 - $180.77
Q2 2021	35,430	$5,464	$159.33	$147.97 - $176.63
Q1 2021	35,430	$5,280	$130.58	$98.76 - $153.37
Q4 2020	35,430	$3,603	$86.25	$66.34 - $103.21
Q3 2020	35,430	$2,423	$69.80	$62.10 - $75.77
Q2 2020	35,430	$2,642	$67.48	$53.23 - $82.32
Q1 2020	35,430	$2,095	$74.64	$44.30 - $88.80
Q4 2019	35,430	$3,002	$81.44	$70.43 - $87.94
Q3 2019	35,430	$2,953	$82.65	$73.22 - $92.84
Q2 2019	76,981	$7,093	$96.65	$82.01 - $113.84
Q1 2019	85,375	$9,145	$104.33	$93.26 - $110.96
Q4 2018	84,876	$8,270	$110.59	$86.74 - $136.36
Q3 2018	110,618	$15,124	$144.30	$133.37 - $159.64
Q2 2018	209,528	$31,151	$160.74	$145.08 - $182.71
Q1 2018	221,882	$42,065	$189.64	$169.45 - $211.08
Q4 2017	230,919	$47,396	$188.42	$173.99 - $202.01
Q3 2017	226,214	$42,942	$172.79	$161.15 - $186.54
Q2 2017	111,997	$18,576	$154.87	$144.44 - $164.19
Q1 2015	2,387	$513	$204.27	$185.26 - $214.40
Q4 2014	2,387	$507	$192.32	$168.87 - $209.59
Q3 2014	4,022	$806	$197.54	$186.21 - $207.58
Q2 2014	7,187	$1,476	$187.17	$171.21 - $199.62
Q1 2014	25,182	$5,038	$190.16	$175.09 - $212.40
Q4 2013	4,966	$1,077	$193.15	$175.92 - $210.55
Q3 2013	4,152	$758	$171.93	$151.62 - $183.39
Q2 2013	7,657	$1,255	$153.14	$138.12 - $166.12