AFFILIATED MANAGERS GROUP

Ticker: AMG CUSIP: 008252108 Class: COM

SG Americas Securities, LLC's Holding History (CIK: 0001313360)

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

Q4 2025

Shares 1,557 Value ($000) $0 Avg Close $258.45 Range $230.09 - $299.69

Q3 2025

Shares 4,137 Value ($000) $1 Avg Close $220.39 Range $194.74 - $250.14

Q2 2025

Shares 3,086 Value ($000) $1 Avg Close $173.47 Range $139.20 - $199.47

Q1 2025

Shares 1,677 Value ($000) $0 Avg Close $174.30 Range $151.61 - $191.09

Q4 2024

Shares 29,558 Value ($000) $5 Avg Close $186.57 Range $173.54 - $199.47

Q3 2024

Shares 6,447 Value ($000) $1 Avg Close $169.81 Range $152.32 - $189.75

Q2 2024

Shares 4,805 Value ($000) $1 Avg Close $159.16 Range $147.08 - $169.59

Q1 2024

Shares 10,364 Value ($000) $2 Avg Close $155.40 Range $145.30 - $167.84

Q4 2023

Shares 15,256 Value ($000) $2 Avg Close $134.30 Range $120.16 - $156.31

Q3 2023

Shares 8,854 Value ($000) $1 Avg Close $139.81 Range $129.01 - $163.83

Q2 2023

Shares 12,357 Value ($000) $2 Avg Close $143.06 Range $135.39 - $151.92

Q1 2023

Shares 6,530 Value ($000) $1 Avg Close $157.88 Range $132.31 - $180.50

Q4 2022

Shares 4,564 Value ($000) $1 Avg Close $141.36 Range $108.04 - $163.24

Q3 2022

Shares 3,587 Value ($000) $401 Avg Close $125.39 Range $109.48 - $141.92

Q2 2022

Shares 12,955 Value ($000) $1,511 Avg Close $128.58 Range $112.28 - $146.71

Q1 2022

Shares 13,858 Value ($000) $1,953 Avg Close $143.53 Range $121.29 - $171.22

Q4 2021

Shares 10,177 Value ($000) $1,674 Avg Close $167.52 Range $146.96 - $191.42

Q3 2021

Shares 1,607 Value ($000) $243 Avg Close $163.56 Range $146.02 - $180.77

Q2 2021

Shares 21,513 Value ($000) $3,318 Avg Close $159.33 Range $147.97 - $176.63

Q1 2021

Shares 22,133 Value ($000) $3,298 Avg Close $130.58 Range $98.76 - $153.37

Q4 2020

Shares 18,811 Value ($000) $1,913 Avg Close $86.25 Range $66.34 - $103.21

Q3 2020

Shares 3,056 Value ($000) $209 Avg Close $69.80 Range $62.10 - $75.77

Q2 2020

Shares 12,872 Value ($000) $960 Avg Close $67.48 Range $53.23 - $82.32

Q1 2020

Shares 1,894 Value ($000) $112 Avg Close $74.64 Range $44.30 - $88.80

Q4 2019

Shares 4,735 Value ($000) $401 Avg Close $81.44 Range $70.43 - $87.94

Q3 2019

Shares 11,709 Value ($000) $976 Avg Close $82.65 Range $73.22 - $92.84

Q2 2019

Shares 9,862 Value ($000) $909 Avg Close $96.65 Range $82.01 - $113.84

Q1 2019

Shares 42,526 Value ($000) $4,555 Avg Close $104.33 Range $93.26 - $110.96

Q4 2018

Shares 15,959 Value ($000) $1,555 Avg Close $110.59 Range $86.74 - $136.36

Q3 2018

Shares 34,082 Value ($000) $4,660 Avg Close $144.30 Range $133.37 - $159.64

Q2 2018

Shares 14,192 Value ($000) $2,110 Avg Close $160.74 Range $145.08 - $182.71

Q1 2018

Shares 9,341 Value ($000) $1,771 Avg Close $189.64 Range $169.45 - $211.08

Q4 2017

Shares 17,878 Value ($000) $3,669 Avg Close $188.42 Range $173.99 - $202.01

Q3 2017

Shares 18,177 Value ($000) $3,451 Avg Close $172.79 Range $161.15 - $186.54

Q2 2017

Shares 10,168 Value ($000) $1,686 Avg Close $154.87 Range $144.44 - $164.19

Q1 2017

Shares 9,503 Value ($000) $1,558 Avg Close $153.31 Range $135.07 - $166.39

Q4 2016

Shares 18,522 Value ($000) $2,691 Avg Close $140.58 Range $126.32 - $157.66

Q3 2016

Shares 5,278 Value ($000) $764 Avg Close $138.59 Range $126.84 - $143.96

Q1 2016

Shares 1,553 Value ($000) $252 Avg Close $135.06 Range $112.27 - $159.84

Q2 2015

Shares 12,259 Value ($000) $2,680 Avg Close $215.27 Range $205.22 - $223.28

Q1 2015

Shares 18,241 Value ($000) $3,918 Avg Close $204.27 Range $185.26 - $214.40

Q4 2014

Shares 29,632 Value ($000) $6,289 Avg Close $192.32 Range $168.87 - $209.59

Q3 2014

Shares 9,707 Value ($000) $1,945 Avg Close $197.54 Range $186.21 - $207.58

Q2 2014

Shares 27,098 Value ($000) $5,566 Avg Close $187.17 Range $171.21 - $199.62

Q1 2014

Shares 15,555 Value ($000) $3,112 Avg Close $190.16 Range $175.09 - $212.40

Q4 2013

Shares 11,338 Value ($000) $2,459 Avg Close $193.15 Range $175.92 - $210.55

Q3 2013

Shares 20,756 Value ($000) $3,791 Avg Close $171.93 Range $151.62 - $183.39

Q2 2013

Shares 6,147 Value ($000) $1,008 Avg Close $153.14 Range $138.12 - $166.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,557	$0	$258.45	$230.09 - $299.69
Q3 2025	4,137	$1	$220.39	$194.74 - $250.14
Q2 2025	3,086	$1	$173.47	$139.20 - $199.47
Q1 2025	1,677	$0	$174.30	$151.61 - $191.09
Q4 2024	29,558	$5	$186.57	$173.54 - $199.47
Q3 2024	6,447	$1	$169.81	$152.32 - $189.75
Q2 2024	4,805	$1	$159.16	$147.08 - $169.59
Q1 2024	10,364	$2	$155.40	$145.30 - $167.84
Q4 2023	15,256	$2	$134.30	$120.16 - $156.31
Q3 2023	8,854	$1	$139.81	$129.01 - $163.83
Q2 2023	12,357	$2	$143.06	$135.39 - $151.92
Q1 2023	6,530	$1	$157.88	$132.31 - $180.50
Q4 2022	4,564	$1	$141.36	$108.04 - $163.24
Q3 2022	3,587	$401	$125.39	$109.48 - $141.92
Q2 2022	12,955	$1,511	$128.58	$112.28 - $146.71
Q1 2022	13,858	$1,953	$143.53	$121.29 - $171.22
Q4 2021	10,177	$1,674	$167.52	$146.96 - $191.42
Q3 2021	1,607	$243	$163.56	$146.02 - $180.77
Q2 2021	21,513	$3,318	$159.33	$147.97 - $176.63
Q1 2021	22,133	$3,298	$130.58	$98.76 - $153.37
Q4 2020	18,811	$1,913	$86.25	$66.34 - $103.21
Q3 2020	3,056	$209	$69.80	$62.10 - $75.77
Q2 2020	12,872	$960	$67.48	$53.23 - $82.32
Q1 2020	1,894	$112	$74.64	$44.30 - $88.80
Q4 2019	4,735	$401	$81.44	$70.43 - $87.94
Q3 2019	11,709	$976	$82.65	$73.22 - $92.84
Q2 2019	9,862	$909	$96.65	$82.01 - $113.84
Q1 2019	42,526	$4,555	$104.33	$93.26 - $110.96
Q4 2018	15,959	$1,555	$110.59	$86.74 - $136.36
Q3 2018	34,082	$4,660	$144.30	$133.37 - $159.64
Q2 2018	14,192	$2,110	$160.74	$145.08 - $182.71
Q1 2018	9,341	$1,771	$189.64	$169.45 - $211.08
Q4 2017	17,878	$3,669	$188.42	$173.99 - $202.01
Q3 2017	18,177	$3,451	$172.79	$161.15 - $186.54
Q2 2017	10,168	$1,686	$154.87	$144.44 - $164.19
Q1 2017	9,503	$1,558	$153.31	$135.07 - $166.39
Q4 2016	18,522	$2,691	$140.58	$126.32 - $157.66
Q3 2016	5,278	$764	$138.59	$126.84 - $143.96
Q1 2016	1,553	$252	$135.06	$112.27 - $159.84
Q2 2015	12,259	$2,680	$215.27	$205.22 - $223.28
Q1 2015	18,241	$3,918	$204.27	$185.26 - $214.40
Q4 2014	29,632	$6,289	$192.32	$168.87 - $209.59
Q3 2014	9,707	$1,945	$197.54	$186.21 - $207.58
Q2 2014	27,098	$5,566	$187.17	$171.21 - $199.62
Q1 2014	15,555	$3,112	$190.16	$175.09 - $212.40
Q4 2013	11,338	$2,459	$193.15	$175.92 - $210.55
Q3 2013	20,756	$3,791	$171.93	$151.62 - $183.39
Q2 2013	6,147	$1,008	$153.14	$138.12 - $166.12