Ameren Corporation
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionBoston Private Wealth Llc
Latest Disclosed Ownership1,940 shares
Latest Disclosed Value $ 213,245
Boston Private Wealth Llc reports 16.13% decrease in ownership of AEE / Ameren Corporation

On April 17, 2026 - Boston Private Wealth Llc filed a 13F-HR form disclosing ownership of 1,940 shares of Ameren Corporation (MX:AEE) valued at $213,245 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 2,313 shares of Ameren Corporation. This represents a change in shares of -16.13% during the quarter.

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)
2026-04-17 2026-03-31 13F AMEREN CORP COM USD0.01 COM 023608102 1,940 -373 -16.13 213 -7.79 0.0140
2026-02-04 2025-12-31 13F AMEREN CORP COM USD0.01 COM 023608102 2,313 -8,746 -79.08 231 -79.98 0.0136
2025-11-06 2025-09-30 13F AMEREN CORP COM USD0.01 COM 023608102 11,059 -3,462 -23.84 1,154 -17.22 0.0621
2025-08-14 2025-06-30 13F AMEREN CORP COM USD0.01 COM 023608102 14,521 1,369 10.41 1,395 5.61 0.0747
2025-05-14 2025-03-31 13F AMEREN CORP COM USD0.01 COM 023608102 13,152 7,979 154.24 1,320 186.33 0.0543
2025-02-05 2024-12-31 13F AMEREN CORP COM USD0.01 COM 023608102 5,173 5,173 461 0.0086
2024-05-15 2024-03-31 13F AMEREN CORP COM USD0.01 COM 023608102 0 -3,454 -100.00 0 -100.00
2024-01-30 2023-12-31 13F AMEREN CORP COM USD0.01 COM 023608102 3,454 -162 -4.48 250 -7.78 0.0061
2023-10-23 2023-09-30 13F AMEREN CORP COM USD0.01 COM 023608102 3,616 116 3.31 271 -5.26 0.0059
2023-07-24 2023-06-30 13F AMEREN CORP COM USD0.01 COM 023608102 3,500 -718 -17.02 286 -21.70 0.0052
2023-05-12 2023-03-31 13F AMEREN CORP COM USD0.01 COM 023608102 4,218 58 1.39 364 -1.36 0.0051
2023-02-10 2022-12-31 13F Ameren COM 023608102 4,160 -193 -4.43 370 5.13 0.0050
2022-11-09 2022-09-30 13F Ameren COM 023608102 4,353 534 13.98 351 1.74 0.0051
2022-08-16 2022-06-30 13F Ameren COM 023608102 3,819 24 0.63 345 -2.82 0.0053
2022-05-13 2022-03-31 13F Ameren COM 023608102 3,795 -590 -13.45 355 -8.97 0.0048
2022-02-15 2021-12-31 13F Ameren COM 023608102 4,385 636 16.96 390 28.29 0.0064
2021-11-09 2021-09-30 13F Ameren COM 023608102 3,749 -219 -5.52 304 -4.40 0.0039
2021-08-13 2021-06-30 13F Ameren COM 023608102 3,968 -94 -2.31 318 -3.93 0.0040
2021-05-11 2021-03-31 13F Ameren COM 023608102 4,062 -369 -8.33 331 -4.34 0.0046
2021-02-10 2020-12-31 13F Ameren COM 023608102 4,431 -759 -14.62 346 -15.82 0.0051
2020-11-10 2020-09-30 13F Ameren COM 023608102 5,190 -1,139 -18.00 411 -7.64 0.0068
2020-08-05 2020-06-30 13F Ameren COM 023608102 6,329 -11,849 -65.18 445 -66.39 0.0083
2020-05-11 2020-03-31 13F Ameren COM 023608102 18,178 -3,712 -16.96 1,324 -21.24 0.0321
2020-02-13 2019-12-31 13F Ameren COM 023608102 21,890 -4,340 -16.55 1,681 -19.95 0.0306
2019-11-01 2019-09-30 13F Ameren COM 023608102 26,230 -414 -1.55 2,100 4.95 0.0418
2019-07-10 2019-06-30 13F Ameren COM 023608102 26,644 -624 -2.29 2,001 -0.25 0.0672
2019-05-14 2019-03-31 13F Ameren COM 023608102 27,268 -3,123 -10.28 2,006 1.21 0.0792
2019-02-14 2018-12-31 13F Ameren COM 023608102 30,391 -6 -0.02 1,982 3.12 0.0846
2018-11-13 2018-09-30 13F Ameren COM 023608102 30,397 -2,172 -6.67 1,922 -3.03 0.0680
2018-08-14 2018-06-30 13F Ameren COM 023608102 32,569 -2,971 -8.36 1,982 -1.54 0.0760
2018-05-11 2018-03-31 13F Ameren COM 023608102 35,540 -1,005 -2.75 2,013 -6.63 0.0772
2018-02-13 2017-12-31 13F Ameren COM 023608102 36,545 520 1.44 2,156 3.45 0.0811
2017-11-13 2017-09-30 13F Ameren COM 023608102 36,025 4,679 14.93 2,084 21.59 0.0801
2017-08-04 2017-06-30 13F Ameren COM 023608102 31,346 3,468 12.44 1,714 12.61 0.0672
2017-05-11 2017-03-31 13F Ameren COM 023608102 27,878 -5,236 -15.81 1,522 -12.38 0.0606
2017-02-15 2016-12-31 13F Ameren COM 023608102 33,114 -539 -1.60 1,737 4.95 0.0719
2016-11-15 2016-09-30 13F/A-1 Ameren COM 023608102 33,653 1,626 5.08 1,655 -3.55 0.0673
2016-11-14 2016-09-30 13F Ameren COM 023608102 32,027 0 1,716 0.0700
2016-08-01 2016-06-30 13F Ameren COM 023608102 32,027 2,849 9.76 1,716 17.37 0.0700
2016-05-13 2016-03-31 13F Ameren COM 023608102 29,178 3,312 12.80 1,462 30.77 0.0595
2016-02-12 2015-12-31 13F Ameren COM 023608102 25,866 -627 -2.37 1,118 -0.18 0.0441
2015-11-12 2015-09-30 13F Ameren COM 023608102 26,493 -2,726 -9.33 1,120 1.73 0.0434
2015-08-13 2015-06-30 13F Ameren COM 023608102 29,219 -1,588 -5.15 1,101 -15.31 0.0364
2015-05-12 2015-03-31 13F Ameren COM 023608102 30,807 2,234 7.82 1,300 -1.37 0.0420
2015-02-10 2014-12-31 13F Ameren COM 023608102 28,573 28,573 1,318 0.0426
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.