Affiliated Managers Group, Inc.
DE ˙ DB ˙ US0082521081
270,00 € ↑14,00 (5,47%)
2026-06-04
AKTIENPREIS
SecurityDE:AFS / Affiliated Managers Group, Inc.
InstitutionStifel Financial Corp
Latest Disclosed Ownership3,136 shares
Latest Disclosed Value $ 867,599
Stifel Financial Corp reports 0.10% decrease in ownership of AFS / Affiliated Managers Group, Inc.

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 3,136 shares of Affiliated Managers Group, Inc. (DE:AFS) valued at $740,096 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,139 shares of Affiliated Managers Group, Inc.. This represents a change in shares of -0.10% during the quarter. The current value of the position is $846,720 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)
2026-05-12 2026-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 3,136 -3 -0.10 868 -4.09 0.0002
2026-02-13 2025-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 3,139 385 13.98 905 37.80 0.0008
2025-11-12 2025-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 2,754 86 3.22 657 25.19 0.0006
2025-08-14 2025-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 2,668 -160 -5.66 525 10.32 0.0005
2025-05-14 2025-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 2,828 -96 -3.28 475 -12.04 0.0005
2025-02-13 2024-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 2,924 -69 -2.31 541 1.50 0.0006
2024-11-14 2024-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 2,993 -1,390 -31.71 532 -22.22 0.0006
2024-08-13 2024-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 4,383 -147 -3.25 685 -9.76 0.0008
2024-05-14 2024-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 4,530 -10,644 -70.15 759 -67.00 0.0009
2024-02-12 2023-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 15,174 -613 -3.88 2,298 11.67 0.0029
2023-11-13 2023-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 15,787 -531 -3.25 2,058 -15.87 0.0029
2023-08-14 2023-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 16,318 -617 -3.64 2,446 1.41 0.0033
2023-05-12 2023-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 16,935 -8 -0.05 2,412 -10.17 0.0035
2023-02-13 2022-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 16,943 817 5.07 2,684 48.78 0.0040
2022-11-14 2022-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 16,126 819 5.35 1,804 1.12 0.0030
2022-08-15 2022-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 15,307 2,646 20.90 1,784 -0.06 0.0028
2022-05-13 2022-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 12,661 -16,097 -55.97 1,785 -62.27 0.0024
2022-02-14 2021-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 28,758 -204 -0.70 4,731 8.11 0.0063
2021-11-15 2021-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 28,962 -210 -0.72 4,376 -2.73 0.0064
2021-08-13 2021-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 29,172 2,849 10.82 4,499 14.68 0.0067
2021-05-14 2021-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 26,323 -906 -3.33 3,923 41.62 0.0065
2021-02-12 2020-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 27,229 -2,788 -9.29 2,770 34.99 0.0049
2020-11-16 2020-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 30,017 -4,128 -12.09 2,052 -19.40 0.0042
2020-08-14 2020-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 34,145 1,313 4.00 2,546 25.17 0.0059
2020-05-14 2020-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 32,832 2,604 8.61 2,034 -20.58 0.0056
2020-02-13 2019-12-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 30,228 -8,872 -22.69 2,561 -22.63 0.0053
2019-11-19 2019-09-30 13F/A-1 AFFILIATED MANAGERS GROUP IN COM 008252108 39,100 -21,509 -35.49 3,310 -40.09 0.0084
2019-11-13 2019-09-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 39,312 -21,297 3,329 1,866.0714
2019-08-14 2019-06-30 13F AFFILIATED MANAGERS GROUP IN COM 008252108 60,609 -7,223 -10.65 5,525 -22.82 0.0142
2019-05-14 2019-03-31 13F AFFILIATED MANAGERS GROUP IN COM 008252108 67,832 41,218 154.87 7,159 177.80 0.0202
2019-02-13 2018-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 26,614 -8,433 -24.06 2,577 -46.25 0.0083
2018-11-13 2018-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 35,047 -11,401 -24.55 4,794 -30.51 0.0137
2018-08-14 2018-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 46,448 -10,645 -18.65 6,899 -36.27 0.0212
2018-05-11 2018-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 57,093 -2,167 -3.66 10,825 -10.96 0.0342
2018-02-14 2017-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 59,260 -856 -1.42 12,157 6.55 0.0385
2017-11-13 2017-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 60,116 -1,828 -2.95 11,410 11.25 0.0396
2017-08-14 2017-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 61,944 -1,747 -2.74 10,256 -1.71 0.0381
2017-05-10 2017-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 63,691 -8,434 -11.69 10,434 -0.45 0.0404
2017-02-16 2016-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 72,125 11,540 19.05 10,481 19.61 0.0445
2016-11-15 2016-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 60,585 5,792 10.57 8,763 13.60 0.0394
2016-08-17 2016-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 54,793 -3,830 -6.53 7,714 -18.98 0.0357
2016-05-16 2016-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 58,623 -747 -1.26 9,521 0.36 0.0507
2016-03-21 2015-12-31 13F/A-2 AFFILIATED MANAGERS GROUP COM 008252108 59,370 -10,192 -14.65 9,487 -20.26 0.0494
2016-02-26 2015-12-31 13F/A-1 AFFILIATED MANAGERS GROUP COM 008252108 59,349 -21 9,484 0.0496
2016-02-16 2015-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 59,349 9,908
2015-11-16 2015-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 69,562 -83,020 -54.41 11,898 -64.32 0.0669
2015-08-17 2015-06-30 13F/A-1 AFFILIATED MANAGERS GROUP COM 008252108 152,582 28,856 23.32 33,346 25.50 0.1724
2015-08-17 2015-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 152,519 33,334
2015-05-14 2015-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 123,726 -17,474 -12.38 26,571 -11.34 0.1454
2015-02-13 2014-12-31 13F AFFILIATED MANAGERS GROUP COM 008252108 141,200 124,835 762.82 29,969 814.53 0.1665
2014-11-13 2014-09-30 13F AFFILIATED MANAGERS GROUP COM 008252108 16,365 -2,757 -14.42 3,277 -16.59 0.0288
2014-08-14 2014-06-30 13F AFFILIATED MANAGERS GROUP COM 008252108 19,122 -7,240 -27.46 3,929 -25.50 0.0353
2014-05-15 2014-03-31 13F AFFILIATED MANAGERS GROUP COM 008252108 26,362 26,362 5,274 0.0505
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.