Affiliated Managers Group, Inc.

Historical 13F Holders

Symbol
AMG
CUSIP
008252108
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 008252108 since 12/18/2024, newest first.

Filer % of Class Filed
Morgan Stanley 13G/A Amendment 7
5.5%
Checked 5% or less
8/12/2026
Event 6/30/2026
Vanguard Capital Management LLC 13G 5.2% 4/29/2026
Event 3/31/2026
Vanguard Portfolio Management LLC 13G 5.1% 4/28/2026
Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 14 0% 3/26/2026
Event 3/13/2026
Vanguard Group Inc 13G/A Amendment 14 10.2% 3/5/2026
Event 2/27/2026
Clarkston Capital Partners, LLC 13G/A Amendment 3
3.2% 2/13/2026
Event 12/31/2025
Morgan Stanley 13G/A Amendment 6
7.0%
Checked 5% or less
11/7/2025
Event 9/30/2025
Integrated Core Strategies (US) LLC 13G/A Amendment 1
3.6% 10/30/2025
Event 9/30/2025
Vanguard Group Inc 13G/A Amendment 13 9.8% 10/30/2025
Event 9/30/2025
Integrated Core Strategies (US) LLC 13G
5.3% 6/6/2025
Event 6/2/2025
Integrated Core Strategies (US) LLC 13G
4.3% 5/14/2025
Event 5/7/2025
Clarkston Capital Partners, LLC 13G/A Amendment 2
5.2% 2/14/2025
Event 12/31/2024

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 24 38.6 k $14.1 M
2026 Q2 587 35.1 M $8.56 B
2026 Q1 567 24.9 M $6.88 B
2025 Q4 530 26.7 M $7.68 B
2025 Q3 466 26.6 M $6.35 B
2025 Q2 449 26.9 M $5.30 B
2025 Q1 414 27.7 M $4.66 B
2024 Q4 424 28.4 M $5.21 B
2024 Q3 438 28.6 M $5.09 B
2024 Q2 425 31.7 M $4.95 B
2024 Q1 422 35.6 M $5.97 B
2023 Q4 403 34.5 M $5.22 B
2023 Q3 375 31.9 M $4.16 B
2023 Q2 395 33.5 M $4.94 B
2023 Q1 405 35.3 M $4.92 B
2022 Q4 383 36.3 M $5.71 B
2022 Q3 343 36.3 M $4.06 B
2022 Q2 321 37.1 M $4.33 B
2022 Q1 346 37.9 M $5.33 B
2021 Q4 379 39.3 M $6.45 B
2021 Q3 347 40.0 M $6.04 B
2021 Q2 349 41.1 M $6.34 B
2021 Q1 331 42.2 M $6.28 B
2020 Q4 318 46.3 M $4.71 B
2020 Q3 286 46.0 M $3.15 B
2020 Q2 305 46.6 M $3.47 B
2020 Q1 310 46.9 M $2.78 B
2019 Q4 365 48.6 M $4.11 B
2019 Q3 379 49.1 M $4.09 B
2019 Q2 421 49.4 M $4.55 B
2019 Q1 458 49.0 M $5.25 B
2018 Q4 481 51.9 M $5.05 B
2018 Q3 522 50.4 M $6.88 B
2018 Q2 535 52.0 M $7.73 B
2018 Q1 552 52.8 M $10.0 B
2017 Q4 551 53.1 M $10.9 B
2017 Q3 502 53.7 M $10.2 B
2017 Q2 502 54.4 M $9.02 B
2017 Q1 545 54.5 M $8.94 B
2016 Q4 558 55.2 M $8.02 B
2016 Q3 519 53.6 M $7.76 B
2016 Q2 526 54.9 M $7.73 B
2016 Q1 495 55.6 M $8.67 B
2015 Q4 496 53.1 M $8.48 B
2015 Q3 503 52.8 M $9.02 B
2015 Q2 511 53.1 M $11.6 B
2015 Q1 509 54.0 M $11.6 B
2014 Q4 506 54.3 M $11.5 B
2014 Q3 492 54.3 M $10.9 B
2014 Q2 486 57.6 M $11.8 B
2014 Q1 474 53.0 M $10.6 B