Ameren Corporation
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionReaves W H & Co Inc
Latest Disclosed Ownership1,072,573 shares
Latest Disclosed Value $ 117,897,225
Reaves W H & Co Inc reports 1.11% decrease in ownership of AEE / Ameren Corporation

On May 7, 2026 - Reaves W H & Co Inc filed a 13F-HR form disclosing ownership of 1,072,573 shares of Ameren Corporation (MX:AEE) valued at $117,897,225 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,084,664 shares of Ameren Corporation. This represents a change in shares of -1.11% 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)
2026-05-07 2026-03-31 13F AMEREN CORP COM COM 023608102 1,072,573 -12,091 -1.11 117,897 8.85 1.9564
2026-02-10 2025-12-31 13F AMEREN CORP COM COM 023608102 1,084,664 120,652 12.52 108,315 7.64 1.8946
2025-11-06 2025-09-30 13F AMEREN CORP COM COM 023608102 964,012 510,192 112.42 100,624 130.87 1.7923
2025-08-11 2025-06-30 13F AMEREN CORP COM COM 023608102 453,820 453,820 43,585 0.9662
2025-02-06 2024-12-31 13F AMEREN CORP COM COM 023608102 0 -278,000 -100.00 0 -100.00
2024-11-05 2024-09-30 13F AMEREN CORP COM COM 023608102 278,000 -30,000 -9.74 24 14.29 0.6652
2024-08-08 2024-06-30 13F AMEREN CORP COM COM 023608102 308,000 -52,727 -14.62 22 -19.23 0.7397
2024-05-07 2024-03-31 13F AMEREN CORP COM COM 023608102 360,727 -282,762 -43.94 27 -43.48 0.9460
2024-02-07 2023-12-31 13F AMEREN CORP COM COM 023608102 643,489 -328,566 -33.80 47 -36.11 1.6914
2023-11-07 2023-09-30 13F AMEREN CORP COM COM 023608102 972,055 -294,423 -23.25 73 -30.10 2.8793
2023-08-07 2023-06-30 13F AMEREN CORP COM COM 023608102 1,266,478 -4,948 -0.39 103 -5.50 3.8108
2023-05-09 2023-03-31 13F AMEREN CORP COM COM 023608102 1,271,426 6,324 0.50 110 -2.68 3.9519
2023-02-09 2022-12-31 13F AMEREN CORP COM COM 023608102 1,265,102 -9,778 -0.77 112 -99.89 4.0161
2022-11-08 2022-09-30 13F AMEREN CORP COM COM 023608102 1,274,880 43,719 3.55 102,692 -7.69 3.8646
2022-08-05 2022-06-30 13F AMEREN CORP COM COM 023608102 1,231,161 4,402 0.36 111,248 -3.28 3.8209
2022-05-05 2022-03-31 13F AMEREN CORP COM COM 023608102 1,226,759 -67,306 -5.20 115,021 -0.14 3.6650
2022-02-09 2021-12-31 13F AMEREN CORP COM COM 023608102 1,294,065 28,830 2.28 115,185 12.39 3.5190
2021-11-08 2021-09-30 13F AMEREN CORP COM COM 023608102 1,265,235 43,285 3.54 102,484 4.78 3.2704
2021-08-05 2021-06-30 13F AMEREN CORP COM COM 023608102 1,221,950 312,292 34.33 97,805 32.15 3.1814
2021-05-06 2021-03-31 13F AMEREN CORP COM COM 023608102 909,658 112,215 14.07 74,010 18.89 2.5739
2021-02-08 2020-12-31 13F AMEREN CORP COM COM 023608102 797,443 797,443 62,249 2.2179
2019-08-08 2019-06-30 13F AMEREN CORP COM COM 023608102 0 -21,850 -100.00 0 -100.00
2019-05-08 2019-03-31 13F AMEREN CORP COM COM 023608102 21,850 -17,000 -43.76 1,607 -36.58 0.0530
2019-02-07 2018-12-31 13F AMEREN CORP COM COM 023608102 38,850 -3,600 -8.48 2,534 -5.59 0.0928
2018-11-08 2018-09-30 13F AMEREN CORP COM COM 023608102 42,450 7,450 21.29 2,684 26.01 0.0878
2018-08-08 2018-06-30 13F AMEREN CORP COM COM 023608102 35,000 35,000 2,130 0.0723
2017-02-08 2016-12-31 13F AMEREN CORP COM COM 023608102 0 -30,000 -100.00 0 -100.00
2016-11-09 2016-09-30 13F AMEREN CORP COM COM 023608102 30,000 -28,000 -48.28 1,475 -52.54 0.0541
2016-08-09 2016-06-30 13F AMEREN CORP COM COM 023608102 58,000 0 0.00 3,108 6.95 0.1083
2016-05-11 2016-03-31 13F AMEREN CORP COM COM 023608102 58,000 -15,245 -20.81 2,906 -8.21 0.1039
2016-02-09 2015-12-31 13F/A-1 AMEREN CORP COM COM 023608102 73,245 3,000 4.27 3,166 6.64 0.1269
2016-02-09 2015-12-31 13F AMEREN CORP COM COM 023608102 70,245 2,969
2015-11-10 2015-09-30 13F AMEREN CORP COM COM 023608102 70,245 -110,000 -61.03 2,969 -56.29 0.1156
2015-08-10 2015-06-30 13F/A-1 AMEREN CORP COM COM 023608102 180,245 -90,000 -33.30 6,792 -40.44 0.2430
2015-08-10 2015-06-30 13F AMEREN CORP COM COM 023608102 180,245 6,792
2015-05-11 2015-03-31 13F AMEREN CORP COM COM 023608102 270,245 -30,000 -9.99 11,404 -17.66 0.3925
2015-02-09 2014-12-31 13F AMEREN CORP COM COM 023608102 300,245 -100,000 -24.98 13,850 -9.72 0.4806
2014-11-06 2014-09-30 13F AMEREN CORP COM COM 023608102 400,245 -25 -0.01 15,341 -6.25 0.5527
2014-08-07 2014-06-30 13F AMEREN CORP COM COM 023608102 400,270 -50,000 -11.10 16,363 -11.79 0.5276
2014-05-08 2014-03-31 13F AMEREN CORP COM COM 023608102 450,270 242,000 116.20 18,551 146.33 0.6419
2014-02-07 2013-12-31 13F AMEREN CORP COM COM 023608102 208,270 57,970 38.57 7,531 43.83 0.2502
2013-11-08 2013-09-30 13F AMEREN CORP COM COM 023608102 150,300 0 0.00 5,236 1.16 0.1605
2013-08-09 2013-06-30 13F AMEREN CORP COM COM 023608102 150,300 150,300 5,176 0.1636
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.