Ameren Corporation
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership6,273,520 shares
Latest Disclosed Value $ 689,604,322
Ameriprise Financial Inc reports 1.24% decrease in ownership of AEE / Ameren Corporation

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 6,273,520 shares of Ameren Corporation (MX:AEE) valued at $689,604,322 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 6,352,441 shares of Ameren Corporation. This represents a change in shares of -1.24% 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)
2026-05-15 2026-03-31 13F AMEREN COM 023608102 6,273,520 -78,921 -1.24 689,604 8.71 0.0296
2026-02-17 2025-12-31 13F AMEREN COM 023608102 6,352,441 68,912 1.10 634,371 -3.28 0.1434
2025-11-14 2025-09-30 13F AMEREN COM 023608102 6,283,529 60,519 0.97 655,892 9.74 0.1506
2025-08-14 2025-06-30 13F AMEREN COM 023608102 6,223,010 179,137 2.96 597,673 -1.51 0.1473
2025-05-14 2025-03-31 13F AMEREN COM 023608102 6,043,873 -394,648 -6.13 606,809 5.73 0.1638
2025-02-14 2024-12-31 13F AMEREN COM 023608102 6,438,521 -239,366 -3.58 573,936 -1.73 0.1473
2024-11-14 2024-09-30 13F AMEREN COM 023608102 6,677,887 124,105 1.89 584,048 25.32 0.1498
2024-08-14 2024-06-30 13F AMEREN COM 023608102 6,553,782 248,355 3.94 466,039 -0.07 0.1261
2024-05-15 2024-03-31 13F AMEREN COM 023608102 6,305,427 -2,635,483 -29.48 466,372 -27.89 0.1284
2024-02-14 2023-12-31 13F AMEREN COM 023608102 8,940,910 2,721,268 43.75 646,793 38.97 0.1936
2023-11-14 2023-09-30 13F AMEREN COM 023608102 6,219,642 -75,746 -1.20 465,416 -9.48 0.1528
2023-08-14 2023-06-30 13F AMEREN COM 023608102 6,295,388 -165,557 -2.56 514,144 -7.89 0.1612
2023-05-22 2023-03-31 13F/A-1 AMEREN COM 023608102 6,460,945 -253,291 -3.77 558,172 -6.51 0.1830
2023-05-15 2023-03-31 13F AMEREN COM 023608102 6,460,945 -253,291 558,172 0.0338
2023-02-14 2022-12-31 13F AMEREN COM 023608102 6,714,236 301,318 4.70 597,033 15.56 0.2046
2022-11-14 2022-09-30 13F AMEREN COM 023608102 6,412,918 -19,037 -0.30 516,655 -11.07 0.1911
2022-08-15 2022-06-30 13F AMEREN COM 023608102 6,431,955 227,223 3.66 580,941 0.06 0.2026
2022-05-16 2022-03-31 13F AMEREN COM 023608102 6,204,732 100,880 1.65 580,620 6.88 0.1713
2022-02-14 2021-12-31 13F AMEREN COM 023608102 6,103,852 419,885 7.39 543,251 18.00 0.1502
2021-11-15 2021-09-30 13F AMEREN COM 023608102 5,683,967 89,382 1.60 460,400 2.82 0.1471
2021-08-16 2021-06-30 13F AMEREN COM 023608102 5,594,585 -82,795 -1.46 447,783 -3.06 0.1385
2021-05-17 2021-03-31 13F AMEREN COM 023608102 5,677,380 448,999 8.59 461,912 13.18 0.1535
2021-02-12 2020-12-31 13F AMEREN COM 023608102 5,228,381 855,501 19.56 408,125 18.01 0.1448
2020-11-16 2020-09-30 13F AMEREN COM 023608102 4,372,880 274,442 6.70 345,848 19.93 0.1407
2020-08-14 2020-06-30 13F AMEREN COM 023608102 4,098,438 -319,517 -7.23 288,368 -10.41 0.1235
2020-05-15 2020-03-31 13F AMEREN COM 023608102 4,417,955 -88,371 -1.96 321,877 -6.99 0.1690
2020-02-14 2019-12-31 13F AMEREN COM 023608102 4,506,326 97,872 2.22 346,085 -1.93 0.1439
2019-11-14 2019-09-30 13F AMEREN COM 023608102 4,408,454 -8,946 -0.20 352,892 6.36 0.1581
2019-08-14 2019-06-30 13F AMEREN COM 023608102 4,417,400 -314,418 -6.64 331,794 -4.67 0.1486
2019-05-15 2019-03-31 13F AMEREN COM 023608102 4,731,818 229,219 5.09 348,034 18.50 0.1601
2019-02-14 2018-12-31 13F AMEREN COM 023608102 4,502,599 -175,430 -3.75 293,700 -0.69 0.1469
2018-11-14 2018-09-30 13F AMEREN COM 023608102 4,678,029 1,165,506 33.18 295,745 38.37 0.1034
2018-08-14 2018-06-30 13F AMEREN COM 023608102 3,512,523 1,399,388 66.22 213,735 78.61 0.0946
2018-05-14 2018-03-31 13F AMEREN COM 023608102 2,113,135 86,432 4.26 119,667 0.09 0.0541
2018-02-12 2017-12-31 13F AMEREN COM 023608102 2,026,703 -692,541 -25.47 119,557 -23.99 0.0545
2017-11-07 2017-09-30 13F AMEREN COM 023608102 2,719,244 -253,696 -8.53 157,282 -3.23 0.0749
2017-08-10 2017-06-30 13F AMEREN COM 023608102 2,972,940 590,243 24.77 162,535 24.96 0.0814
2017-05-05 2017-03-31 13F AMEREN COM 023608102 2,382,697 400,804 20.22 130,066 25.10 0.0673
2017-02-03 2016-12-31 13F AMEREN COM 023608102 1,981,893 -258,295 -11.53 103,969 -5.63 0.0568
2016-11-08 2016-09-30 13F AMEREN COM 023608102 2,240,188 -43,106 -1.89 110,174 -9.95 0.0617
2016-08-08 2016-06-30 13F AMEREN COM 023608102 2,283,294 47,402 2.12 122,341 9.21 0.0717
2016-05-12 2016-03-31 13F AMEREN COM 023608102 2,235,892 89,982 4.19 112,019 20.75 0.0668
2016-02-11 2015-12-31 13F AMEREN COM 023608102 2,145,910 -73,551 -3.31 92,768 -1.12 0.0545
2015-11-12 2015-09-30 13F AMEREN COM 023608102 2,219,461 -2,663 -0.12 93,815 12.04 0.0581
2015-08-13 2015-06-30 13F AMEREN COM 023608102 2,222,124 -87,429 -3.79 83,733 -14.09 0.0477
2015-05-14 2015-03-31 13F AMEREN COM 023608102 2,309,553 -59,247 -2.50 97,462 -10.81 0.0559
2015-02-13 2014-12-31 13F AMEREN COM 023608102 2,368,800 -166,582 -6.57 109,273 12.44 0.0637
2014-11-14 2014-09-30 13F AMEREN COM 023608102 2,535,382 47,462 1.91 97,184 -4.45 0.0585
2014-08-13 2014-06-30 13F AMEREN COM 023608102 2,487,920 -475,396 -16.04 101,707 -16.69 0.0600
2014-05-14 2014-03-31 13F AMEREN COM 023608102 2,963,316 -265,092 -8.21 122,087 4.58 0.0733
2014-02-14 2013-12-31 13F AMEREN COM 023608102 3,228,408 850,875 35.79 116,740 40.93 0.0707
2013-11-14 2013-09-30 13F AMEREN COM 023608102 2,377,533 -112,425 -4.52 82,834 -3.41 0.0543
2013-08-14 2013-06-30 13F AMEREN COM 023608102 2,489,958 2,489,958 85,758 0.0594
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.