AFFILIATED MANAGERS GROUP

Ticker: AMG CUSIP: 008252108 Class: COM

JANUS HENDERSON GROUP PLC's Holding History (CIK: 0001274173)

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

Q4 2025

Shares 12,770 Value ($000) $3,685 Avg Close $258.45 Range $230.09 - $299.69

Q3 2025

Shares 11,947 Value ($000) $2,851 Avg Close $220.39 Range $194.74 - $250.14

Q2 2025

Shares 11,947 Value ($000) $2,348 Avg Close $173.47 Range $139.20 - $199.47

Q1 2025

Shares 12,795 Value ($000) $2,141 Avg Close $174.30 Range $151.61 - $191.09

Q4 2024

Shares 13,795 Value ($000) $2,554 Avg Close $186.57 Range $173.54 - $199.47

Q3 2024

Shares 14,495 Value ($000) $2,577 Avg Close $169.81 Range $152.32 - $189.75

Q2 2024

Shares 14,495 Value ($000) $2,264 Avg Close $159.16 Range $147.08 - $169.59

Q1 2024

Shares 14,667 Value ($000) $2,455 Avg Close $155.40 Range $145.30 - $167.84

Q4 2023

Shares 17,567 Value ($000) $2,663 Avg Close $134.30 Range $120.16 - $156.31

Q3 2023

Shares 17,601 Value ($000) $2,295 Avg Close $139.81 Range $129.01 - $163.83

Q2 2023

Shares 17,605 Value ($000) $2,640 Avg Close $143.06 Range $135.39 - $151.92

Q1 2023

Shares 17,635 Value ($000) $2,511 Avg Close $157.88 Range $132.31 - $180.50

Q4 2022

Shares 7,932 Value ($000) $1,257 Avg Close $141.36 Range $108.04 - $163.24

Q3 2022

Shares 6,532 Value ($000) $731 Avg Close $125.39 Range $109.48 - $141.92

Q2 2022

Shares 8,618 Value ($000) $1,006 Avg Close $128.58 Range $112.28 - $146.71

Q1 2022

Shares 8,631 Value ($000) $1,216 Avg Close $143.53 Range $121.29 - $171.22

Q4 2021

Shares 8,634 Value ($000) $1,421 Avg Close $167.52 Range $146.96 - $191.42

Q3 2021

Shares 4,296 Value ($000) $649 Avg Close $163.56 Range $146.02 - $180.77

Q4 2019

Shares 200,852 Value ($000) $17,020 Avg Close $81.44 Range $70.43 - $87.94

Q3 2019

Shares 498,675 Value ($000) $41,565 Avg Close $82.65 Range $73.22 - $92.84

Q2 2019

Shares 565,467 Value ($000) $52,102 Avg Close $96.65 Range $82.01 - $113.84

Q1 2019

Shares 404,961 Value ($000) $43,376 Avg Close $104.33 Range $93.26 - $110.96

Q4 2018

Shares 336,334 Value ($000) $32,772 Avg Close $110.59 Range $86.74 - $136.36

Q3 2018

Shares 227,896 Value ($000) $31,160 Avg Close $144.30 Range $133.37 - $159.64

Q2 2018

Shares 461,065 Value ($000) $68,548 Avg Close $160.74 Range $145.08 - $182.71

Q1 2018

Shares 538,454 Value ($000) $102,073 Avg Close $189.64 Range $169.45 - $211.08

Q4 2017

Shares 486,176 Value ($000) $99,789 Avg Close $188.42 Range $173.99 - $202.01

Q3 2017

Shares 410,381 Value ($000) $77,901 Avg Close $172.79 Range $161.15 - $186.54

Q2 2017

Shares 518,866 Value ($000) $86,059 Avg Close $154.87 Range $144.44 - $164.19

Q1 2017

Shares 119,783 Value ($000) $19,637 Avg Close $153.31 Range $135.07 - $166.39

Q4 2016

Shares 133,725 Value ($000) $19,430 Avg Close $140.58 Range $126.32 - $157.66

Q3 2016

Shares 149,529 Value ($000) $21,637 Avg Close $138.59 Range $126.84 - $143.96

Q2 2016

Shares 154,670 Value ($000) $21,772 Avg Close $158.47 Range $126.98 - $174.12

Q1 2016

Shares 174,200 Value ($000) $28,290 Avg Close $135.06 Range $112.27 - $159.84

Q4 2015

Shares 192,201 Value ($000) $30,706 Avg Close $166.43 Range $137.16 - $184.66

Q3 2015

Shares 198,459 Value ($000) $21,965 Avg Close $190.37 Range $159.30 - $214.73

Q2 2015

Shares 208,313 Value ($000) $45,538 Avg Close $215.27 Range $205.22 - $223.28

Q1 2015

Shares 250,102 Value ($000) $53,717 Avg Close $204.27 Range $185.26 - $214.40

Q4 2014

Shares 269,999 Value ($000) $57,304 Avg Close $192.32 Range $168.87 - $209.59

Q3 2014

Shares 9,089 Value ($000) $1,820 Avg Close $197.54 Range $186.21 - $207.58

Q2 2014

Shares 9,089 Value ($000) $1,855 Avg Close $187.17 Range $171.21 - $199.62

Q1 2014

Shares 8,291 Value ($000) $1,659 Avg Close $190.16 Range $175.09 - $212.40

Q4 2013

Shares 7,468 Value ($000) $1,620 Avg Close $193.15 Range $175.92 - $210.55

Q3 2013

Shares 7,468 Value ($000) $1,364 Avg Close $171.93 Range $151.62 - $183.39

Q2 2013

Shares 5,448 Value ($000) $884 Avg Close $153.14 Range $138.12 - $166.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	12,770	$3,685	$258.45	$230.09 - $299.69
Q3 2025	11,947	$2,851	$220.39	$194.74 - $250.14
Q2 2025	11,947	$2,348	$173.47	$139.20 - $199.47
Q1 2025	12,795	$2,141	$174.30	$151.61 - $191.09
Q4 2024	13,795	$2,554	$186.57	$173.54 - $199.47
Q3 2024	14,495	$2,577	$169.81	$152.32 - $189.75
Q2 2024	14,495	$2,264	$159.16	$147.08 - $169.59
Q1 2024	14,667	$2,455	$155.40	$145.30 - $167.84
Q4 2023	17,567	$2,663	$134.30	$120.16 - $156.31
Q3 2023	17,601	$2,295	$139.81	$129.01 - $163.83
Q2 2023	17,605	$2,640	$143.06	$135.39 - $151.92
Q1 2023	17,635	$2,511	$157.88	$132.31 - $180.50
Q4 2022	7,932	$1,257	$141.36	$108.04 - $163.24
Q3 2022	6,532	$731	$125.39	$109.48 - $141.92
Q2 2022	8,618	$1,006	$128.58	$112.28 - $146.71
Q1 2022	8,631	$1,216	$143.53	$121.29 - $171.22
Q4 2021	8,634	$1,421	$167.52	$146.96 - $191.42
Q3 2021	4,296	$649	$163.56	$146.02 - $180.77
Q4 2019	200,852	$17,020	$81.44	$70.43 - $87.94
Q3 2019	498,675	$41,565	$82.65	$73.22 - $92.84
Q2 2019	565,467	$52,102	$96.65	$82.01 - $113.84
Q1 2019	404,961	$43,376	$104.33	$93.26 - $110.96
Q4 2018	336,334	$32,772	$110.59	$86.74 - $136.36
Q3 2018	227,896	$31,160	$144.30	$133.37 - $159.64
Q2 2018	461,065	$68,548	$160.74	$145.08 - $182.71
Q1 2018	538,454	$102,073	$189.64	$169.45 - $211.08
Q4 2017	486,176	$99,789	$188.42	$173.99 - $202.01
Q3 2017	410,381	$77,901	$172.79	$161.15 - $186.54
Q2 2017	518,866	$86,059	$154.87	$144.44 - $164.19
Q1 2017	119,783	$19,637	$153.31	$135.07 - $166.39
Q4 2016	133,725	$19,430	$140.58	$126.32 - $157.66
Q3 2016	149,529	$21,637	$138.59	$126.84 - $143.96
Q2 2016	154,670	$21,772	$158.47	$126.98 - $174.12
Q1 2016	174,200	$28,290	$135.06	$112.27 - $159.84
Q4 2015	192,201	$30,706	$166.43	$137.16 - $184.66
Q3 2015	198,459	$21,965	$190.37	$159.30 - $214.73
Q2 2015	208,313	$45,538	$215.27	$205.22 - $223.28
Q1 2015	250,102	$53,717	$204.27	$185.26 - $214.40
Q4 2014	269,999	$57,304	$192.32	$168.87 - $209.59
Q3 2014	9,089	$1,820	$197.54	$186.21 - $207.58
Q2 2014	9,089	$1,855	$187.17	$171.21 - $199.62
Q1 2014	8,291	$1,659	$190.16	$175.09 - $212.40
Q4 2013	7,468	$1,620	$193.15	$175.92 - $210.55
Q3 2013	7,468	$1,364	$171.93	$151.62 - $183.39
Q2 2013	5,448	$884	$153.14	$138.12 - $166.12