Ameren Corporation
US ˙ NYSE ˙ US0236081024

SecurityAEE / Ameren Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership35,351 shares
Latest Disclosed Value $ 3,886,559
Advisor Group Holdings, Inc. reports 6.76% decrease in ownership of AEE / Ameren Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 35,351 shares of Ameren Corporation (US:AEE) valued at $3,885,782 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 37,914 shares of Ameren Corporation. This represents a change in shares of -6.76% during the quarter. The current value of the position is $3,755,337 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 COM 023608102 35,351 -2,563 -6.76 3,887 2.64 0.0033
2026-02-17 2025-12-31 13F AMEREN COM 023608102 37,914 1,314 3.59 3,787 2.27 0.0055
2025-11-14 2025-09-30 13F AMEREN COM 023608102 36,600 553 1.53 3,702 6.93 0.0052
2025-09-04 2025-06-30 13F/A-1 MEREN COM 023608102 36,047 3,175 9.66 3,463 4.88 0.0062
2025-08-13 2025-06-30 13F MEREN COM 023608102 27,562 -5,310 2,474 0.0029
2025-05-12 2025-03-31 13F AMEREN COM 023608102 32,872 -2,041 -5.85 3,301 8.55 0.0074
2025-06-06 2024-12-31 13F/A-1 AMEREN COM 023608102 34,913 622 1.81 3,041 1.40 0.0068
2025-02-07 2024-12-31 13F AMEREN COM 023608102 34,060 -231 2,924 0.0075
2024-11-13 2024-09-30 13F AMEREN COM 023608102 34,291 -7,925 -18.77 2,999 -0.10 0.0068
2024-08-13 2024-06-30 13F AMEREN COM 023608102 42,216 -11,680 -21.67 3,002 -24.69 0.0071
2024-05-10 2024-03-31 13F AMEREN COM 023608102 53,896 -11,476 -17.55 3,986 -15.75 0.0089
2024-02-12 2023-12-31 13F AMEREN COM 023608102 65,372 -26,661 -28.97 4,732 -31.31 0.0083
2023-11-13 2023-09-30 13F AMEREN COM 023608102 92,033 14,589 18.84 6,888 8.87 0.0102
2023-08-21 2023-06-30 13F/A-1 AMEREN COM 023608102 77,444 2,898 3.89 6,326 -1.86 0.0114
2023-08-10 2023-06-30 13F AMEREN COM 023608102 77,444 2,898 6,326 0.0017
2023-05-12 2023-03-31 13F AMEREN COM 023608102 74,546 -6,899 -8.47 6,447 -10.99 0.0121
2023-02-10 2022-12-31 13F AMEREN COM 023608102 81,445 -13,134 -13.89 7,243 -4.94 0.0147
2022-11-14 2022-09-30 13F AMEREN COM 023608102 94,579 -2,615 -2.69 7,618 -13.30 0.0174
2022-08-10 2022-06-30 13F AMEREN COM 023608102 97,194 15,319 18.71 8,787 15.41 0.0194
2022-05-04 2022-03-31 13F AMEREN COM 023608102 81,875 -1,141 -1.37 7,614 3.02 0.0148
2022-02-03 2021-12-31 13F AMEREN COM 023608102 83,016 4,174 5.29 7,391 15.72 0.0140
2021-11-05 2021-09-30 13F AMEREN COM 023608102 78,842 -3,620 -4.39 6,387 -3.24 0.0133
2021-08-02 2021-06-30 13F AMEREN COM 023608102 82,462 1,788 2.22 6,601 0.55 0.0143
2021-05-13 2021-03-31 13F AMEREN COM 023608102 80,674 2,464 3.15 6,565 7.50 0.0158
2021-02-10 2020-12-31 13F AMEREN COM 023608102 78,210 2,496 3.30 6,107 2.18 0.0163
2020-11-12 2020-09-30 13F AMEREN COM 023608102 75,714 -1,993 -2.56 5,977 9.27 0.0179
2020-08-14 2020-06-30 13F AMEREN COM 023608102 77,707 -9,190 -10.58 5,470 -0.76 0.0184
2020-05-18 2020-03-31 13F AMEREN COM 023608102 86,897 86,897 5,512 0.0226
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.