Mason Hawkins's AMG Position Overview
Mason Hawkins (via Southeastern Asset Management Inc/Tn/) currently holds 5,562 shares of Affiliated Managers Group, Inc. (AMG) worth $1.6 M, representing 0.07% of the portfolio. First purchased in 2018-Q3, this long-term strategic position has been held for 30 quarters.
Based on 13F filings, Mason Hawkins has maintained a strategic position in AMG, demonstrating sustained confidence in this investment. Largest addition occurred in Q4 2018, adding 664,810 shares. Largest reduction occurred in Q4 2022, reducing 686,331 shares.
Analysis based on 13F filings available since 2013 Q2
Mason Hawkins's Affiliated Managers Group (AMG) Holding Value Over Time
Track share changes against reported price movement
Quarterly Affiliated Managers Group (AMG) Trades by Mason Hawkins
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -1,276 | Reduce 18.66% | 5,562 | $288.28 |
| Q2 2025 | -472,933 | Reduce 98.57% | 6,838 | $196.77 |
| Q1 2025 | -222,716 | Reduce 31.70% | 479,771 | $168.03 |
| Q4 2024 | -22,342 | Reduce 3.08% | 702,487 | $184.92 |
| Q3 2024 | -70,420 | Reduce 8.86% | 724,829 | $177.80 |
| Q2 2024 | -42,629 | Reduce 5.09% | 795,249 | $156.23 |
| Q1 2024 | -44,497 | Reduce 5.04% | 837,878 | $167.47 |
| Q4 2023 | -25,664 | Reduce 2.83% | 882,375 | $151.42 |
| Q3 2023 | -12,996 | Reduce 1.41% | 908,039 | $130.34 |
| Q2 2023 | -2,323 | Reduce 0.25% | 921,035 | $149.89 |
| Q1 2023 | -8,423 | Reduce 0.90% | 923,358 | $142.42 |
| Q4 2022 | -686,331 | Reduce 42.42% | 931,781 | $158.43 |
| Q3 2022 | -134,723 | Reduce 7.69% | 1.62 M | $111.85 |
| Q2 2022 | -22,395 | Reduce 1.26% | 1.75 M | $116.60 |
| Q1 2022 | +238,069 | Add 15.49% | 1.78 M | $140.95 |
| Q4 2021 | -62,600 | Reduce 3.91% | 1.54 M | $164.51 |
| Q3 2021 | +88,728 | Add 5.87% | 1.6 M | $151.09 |
| Q2 2021 | +240,196 | Add 18.90% | 1.51 M | $154.21 |
| Q1 2021 | -346,782 | Reduce 21.44% | 1.27 M | $149.03 |
| Q4 2020 | +215,995 | Add 15.41% | 1.62 M | $101.70 |
| Q3 2020 | +14,510 | Add 1.05% | 1.4 M | $68.38 |
| Q2 2020 | -14,786 | Reduce 1.05% | 1.39 M | $74.56 |
| Q1 2020 | +601 | Add 0.04% | 1.4 M | $59.14 |
| Q4 2019 | -120,698 | Reduce 7.93% | 1.4 M | $84.74 |
| Q3 2019 | -77,392 | Reduce 4.84% | 1.52 M | $83.35 |
| Q2 2019 | -92,416 | Reduce 5.46% | 1.6 M | $92.14 |
| Q1 2019 | -147,811 | Reduce 8.03% | 1.69 M | $107.11 |
| Q4 2018 | +664,810 | Add 56.59% | 1.84 M | $97.44 |
| Q3 2018 | +1.17 M | New Buy | 1.17 M | $136.72 |
Mason Hawkins's Affiliated Managers Group Investment FAQs
Mason Hawkins first purchased Affiliated Managers Group, Inc. (AMG) in Q3 2018, acquiring 1,174,806 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mason Hawkins has held Affiliated Managers Group, Inc. (AMG) for 30 quarters since Q3 2018.
Mason Hawkins's largest addition to Affiliated Managers Group, Inc. (AMG) was in Q3 2018, adding 1,174,806 shares worth $160.62 M.
According to the latest 13F filing for Q4 2025, Mason Hawkins's firm, Southeastern Asset Management Inc/Tn/, owns 5,562 shares of Affiliated Managers Group, Inc. (AMG), valued at approximately $1.6 M.
As of the Q4 2025 filing, Affiliated Managers Group, Inc. (AMG) represents approximately 0.07% of Mason Hawkins's publicly disclosed stock portfolio, making it one of their key holdings.
Mason Hawkins's peak holding in Affiliated Managers Group, Inc. (AMG) was 1,839,616 shares, as reported at the end of Q4 2018.