Ameren Corporation
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
Institution1832 Asset Management L.P.
Latest Disclosed Ownership173,400 shares
Latest Disclosed Value $ 19,060,128
1832 Asset Management L.P. reports 4.57% decrease in ownership of AEE / Ameren Corporation

On May 14, 2026 - 1832 Asset Management L.P. filed a 13F-HR form disclosing ownership of 173,400 shares of Ameren Corporation (MX:AEE) valued at $19,060,128 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 181,700 shares of Ameren Corporation. This represents a change in shares of -4.57% 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)
2026-05-14 2026-03-31 13F AMEREN COM 023608102 173,400 -8,300 -4.57 19,060 5.05 0.0175
2026-02-13 2025-12-31 13F AMEREN COM 023608102 181,700 0 0.00 18,145 -4.33 0.0138
2025-11-14 2025-09-30 13F AMEREN COM 023608102 181,700 85,700 89.27 18,966 105.72 0.0150
2025-08-13 2025-06-30 13F AMEREN COM 023608102 96,000 71,225 287.49 9,220 270.69 0.0072
2025-05-14 2025-03-31 13F AMEREN COM 023608102 24,775 4,646 23.08 2,487 38.63 0.0023
2025-02-14 2024-12-31 13F AMEREN COM 023608102 20,129 1,121 5.90 1,794 7.94 0.0015
2024-11-13 2024-09-30 13F AMEREN COM 023608102 19,008 -3,706 -16.32 1,662 2.91 0.0013
2024-08-13 2024-06-30 13F AMEREN COM 023608102 22,714 -2,603 -10.28 1,615 -13.73 0.0013
2024-05-14 2024-03-31 13F AMEREN COM 023608102 25,317 821 3.35 1,872 5.64 0.0011
2024-02-13 2023-12-31 13F AMEREN COM 023608102 24,496 1,183 5.07 1,772 1.61 0.0026
2023-11-13 2023-09-30 13F AMEREN COM 023608102 23,313 -711 -2.96 1,745 -11.11 0.0025
2023-08-14 2023-06-30 13F AMEREN COM 023608102 24,024 -1,100 -4.38 1,962 -9.59 0.0038
2023-05-12 2023-03-31 13F AMEREN COM 023608102 25,124 2,562 11.36 2,170 8.18 0.0045
2023-02-15 2022-12-31 13F AMEREN COM 023608102 22,562 -228,593 -91.02 2,006 -90.08 0.0041
2022-11-14 2022-09-30 13F AMEREN COM 023608102 251,155 -479,174 -65.61 20,231 -69.34 0.0431
2022-08-15 2022-06-30 13F AMEREN COM 023608102 730,329 129,916 21.64 65,993 18.86 0.1330
2022-05-16 2022-03-31 13F AMEREN COM 023608102 600,413 600,413 55,521 0.0906
2019-02-14 2018-12-31 13F AMEREN COM 023608102 0 -8,058 -100.00 0 -100.00
2018-11-14 2018-09-30 13F AMEREN COM 023608102 8,058 -19,086 -70.31 494 -68.95 0.0016
2018-08-14 2018-06-30 13F AMEREN COM 023608102 27,144 27,144 1,591 0.0054
2017-05-15 2017-03-31 13F AMEREN COM 023608102 0 -71 -100.00 0 -100.00
2017-04-01 2016-12-31 13F/A-1 AMEREN COM 023608102 71 -253,529 -99.97 4 -99.96 0.0000
2017-02-14 2016-12-31 13F AMEREN COM 023608102 71 4
2014-05-14 2014-03-31 13F AMEREN COM 023608102 253,600 -107,400 -29.75 10,359 -20.75 0.0356
2014-02-13 2013-12-31 13F AMEREN COM 023608102 361,000 61,000 20.33 13,071 25.26 0.0503
2013-11-13 2013-09-30 13F AMEREN COM 023608102 300,000 300,000 10,435 0.0463
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.