Affiliated Managers Group, Inc.
US ˙ NYSE ˙ US0082521081

SecurityAMG / Affiliated Managers Group, Inc.
InstitutionFranklin Resources Inc
Latest Disclosed Ownership119,615 shares
Latest Disclosed Value $ 33,097,471
Franklin Resources Inc reports 89.61% increase in ownership of AMG / Affiliated Managers Group, Inc.

On May 13, 2026 - Franklin Resources Inc filed a 13F-HR form disclosing ownership of 119,615 shares of Affiliated Managers Group, Inc. (US:AMG) valued at $33,097,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 63,086 shares of Affiliated Managers Group, Inc.. This represents a change in shares of 89.61% during the quarter. The current value of the position is $37,273,230 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 119,615 56,529 89.61 33,097 81.99 0.0081
2026-02-11 2025-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 63,086 9,960 18.75 18,186 20.66 0.0045
2025-11-13 2025-09-30 13F AEROVIRONMENT COM 008252108 53,126 17,249 48.08 15,073 113.51 0.0038
2025-08-12 2025-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 35,877 -16,995 -32.14 7,060 -20.54 0.0019
2025-05-13 2025-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 52,872 -29,671 -35.95 8,884 -41.79 0.0026
2025-02-12 2024-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 82,543 -19,370 -19.01 15,264 -21.17 0.0042
2024-11-27 2024-09-30 13F/A-1 AFFILIATED MANAGERS GROUP IN COM 008252108 101,913 15,746 18.27 19,363 43.85 0.0054
2024-11-12 2024-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 101,913 15,746 19,363 0.0009
2024-08-14 2024-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 86,167 12,585 17.10 13,462 9.24 0.0041
2024-05-13 2024-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 73,582 26,749 57.12 12,323 73.77 0.0039
2024-02-09 2023-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 46,833 -65 -0.14 7,091 16.02 0.0033
2023-11-13 2023-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 46,898 -8,756 -15.73 6,113 -26.72 0.0031
2023-08-11 2023-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 55,654 22,441 67.57 8,342 76.34 0.0040
2023-05-12 2023-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 33,213 -6,674 -16.73 4,730 -25.15 0.0024
2023-02-10 2022-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 39,887 4,976 14.25 6,319 61.86 0.0033
2022-11-14 2022-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 34,911 31,413 898.03 3,904 856.86 0.0021
2022-08-11 2022-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 3,498 -986 -21.99 408 -35.55 0.0002
2022-05-13 2022-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 4,484 259 6.13 633 -8.92 0.0003
2022-02-11 2021-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 4,225 90 2.18 695 11.38 0.0003
2021-11-12 2021-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 4,135 2,825 215.65 624 208.91 0.0002
2021-08-13 2021-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 1,310 1,310 202 0.0001
2019-08-14 2019-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 0 -2,517 -100.00 0 -100.00
2019-05-15 2019-03-31 13F/A-1 AFFILIATED MANAGERS GROUP IN COM 008252108 2,517 397 18.73 269 29.95 0.0001
2019-05-14 2019-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 2,517 397 269
2019-02-12 2018-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 2,120 -1,545 -42.16 207 -58.68 0.0001
2018-11-13 2018-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 3,665 -275 -6.98 501 -14.51 0.0002
2018-08-14 2018-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 3,940 -152,161 -97.48 586 -98.02 0.0003
2018-05-10 2018-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 156,101 -45,660 -22.63 29,593 -28.54 0.0150
2018-02-14 2017-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 201,761 -70,600 -25.92 41,411 -19.91 0.0199
2017-11-13 2017-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 272,361 -2,580 -0.94 51,703 13.38 0.0253
2017-08-10 2017-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 274,941 -127,000 -31.60 45,602 -30.79 0.0227
2017-05-12 2017-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 401,941 -14,177 -3.41 65,894 8.98 0.0334
2017-02-14 2016-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 416,118 -316,017 -43.16 60,462 -42.92 0.0313
2016-11-14 2016-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 732,135 -123,332 -14.42 105,917 -12.05 0.0554
2016-08-11 2016-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 855,467 -73,847 -7.95 120,433 -20.20 0.0648
2016-05-10 2016-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 929,314 -138,512 -12.97 150,924 -11.54 0.0801
2016-04-27 2015-12-31 13F/A-1 AFFILIATED MANAGERS GROUP COM 008252108 1,067,826 -150,195 -12.33 170,604 -18.09 0.0864
2016-02-12 2015-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 1,067,826 170,604
2015-11-10 2015-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 1,218,021 83,128 7.32 208,275 -16.05 0.1029
2015-08-12 2015-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 1,134,893 178,399 18.65 248,088 20.76 0.1126
2015-05-14 2015-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 956,494 174,024 22.24 205,433 23.70 0.0931
2015-02-10 2014-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 782,470 -113,869 -12.70 166,073 -7.53 0.0753
2014-11-12 2014-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 896,339 -73,324 -7.56 179,587 -9.83 0.0819
2014-08-12 2014-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 969,663 13,879 1.45 199,162 4.16 0.0877
2014-05-13 2014-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 955,784 238,151 33.19 191,203 22.85 0.0903
2014-02-12 2013-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 717,633 116,495 19.38 155,639 41.76 0.0761
2013-11-14 2013-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 601,138 -71,250 -10.60 109,791 -0.40 0.0584
2013-08-09 2013-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 672,388 672,388 110,232 0.0629
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.