Ameren Corporation
US ˙ NYSE ˙ US0236081024

SecurityAEE / Ameren Corporation
InstitutionDean Capital Management
Latest Disclosed Ownership25,805 shares
Latest Disclosed Value $ 2,836,486
Dean Capital Management reports 0.01% decrease in ownership of AEE / Ameren Corporation

On May 15, 2026 - Dean Capital Management filed a 13F-HR form disclosing ownership of 25,805 shares of Ameren Corporation (US:AEE) valued at $2,836,486 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 20, 2026 disclosing 25,807 shares of Ameren Corporation. This represents a change in shares of -0.01% during the quarter. The current value of the position is $2,760,877 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)
2026-05-15 2026-03-31 13F Ameren CS 023608102 25,805 -2 -0.01 2,836 10.05 1.1750
2026-02-20 2025-12-31 13F Ameren CS 023608102 25,807 788 3.15 2,577 -1.30 1.0980
2025-11-14 2025-09-30 13F Ameren CS 023608102 25,019 0 0.00 2,611 8.70 1.0183
2025-08-14 2025-06-30 13F Ameren CS 023608102 25,019 1,339 5.65 2,403 1.05 0.9875
2025-05-16 2025-03-31 13F Ameren CS 023608102 23,680 485 2.09 2,377 15.00 1.0358
2025-02-14 2024-12-31 13F Ameren CS 023608102 23,195 365 1.60 2,068 3.56 0.8804
2024-11-14 2024-09-30 13F Ameren CS 023608102 22,830 22,830 1,997 0.8477
2024-08-14 2024-06-30 13F Ameren CS 023608102 0 -16,322 -100.00 0 -100.00
2024-05-14 2024-03-31 13F Ameren CS 023608102 16,322 0 0.00 1,207 2.29 0.7024
2024-02-14 2023-12-31 13F Ameren CS 023608102 16,322 2,647 19.36 1,181 15.35 0.7291
2023-11-14 2023-09-30 13F Ameren CS 023608102 13,675 13,675 1,023 0.7662
2021-05-11 2021-03-31 13F Ameren CS 023608102 0 -8,482 -100.00 0 -100.00
2021-02-16 2020-12-31 13F Ameren CS 023608102 8,482 -526 -5.84 662 -7.02 0.3925
2020-11-16 2020-09-30 13F Ameren CS 023608102 9,008 -2,110 -18.98 712 -8.95 0.7334
2020-08-14 2020-06-30 13F Ameren CS 023608102 11,118 1,207 12.18 782 8.31 0.9128
2020-05-14 2020-03-31 13F Ameren CS 023608102 9,911 390 4.10 722 -1.23 1.0726
2020-02-13 2019-12-31 13F/A-1 Ameren CS 023608102 9,521 123 1.31 731 -2.79 0.6938
2020-02-13 2019-12-31 13F Ameren CS 023608102 9,521 731
2019-11-14 2019-09-30 13F Ameren CS 023608102 9,398 -390 -3.98 752 2.31 0.7765
2019-08-14 2019-06-30 13F Ameren CS 023608102 9,788 9,788 735 0.7652
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.