아메렌 코퍼레이션
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionBaird Financial Group, Inc.
Latest Disclosed Ownership11,079 shares
Latest Disclosed Value $ 1,217,803
Baird Financial Group, Inc. reports 0.37% decrease in ownership of AEE / Ameren Corporation

On May 14, 2026 - Baird Financial Group, Inc. filed a 13F-HR form disclosing ownership of 11,079 shares of Ameren Corporation (MX:AEE) valued at $1,217,803 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,120 shares of Ameren Corporation. This represents a change in shares of -0.37% 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 11,079 -41 -0.37 1,218 9.64 0.0010
2026-02-13 2025-12-31 13F AMEREN CORP COM COMMON 023608102 11,120 184 1.68 1,110 -2.72 0.0017
2025-11-13 2025-09-30 13F AMEREN COMMON 023608102 10,936 1,577 16.85 1,142 27.06 0.0018
2025-08-13 2025-06-30 13F AMEREN CORP COM COMMON 023608102 9,359 29 0.31 899 -4.06 0.0016
2025-05-15 2025-03-31 13F AMEREN CORP COM COMMON 023608102 9,330 5,138 122.57 937 150.94 0.0018
2025-02-14 2024-12-31 13F AMEREN COMMON 023608102 4,192 1,273 43.61 374 46.27 0.0007
2024-11-14 2024-09-30 13F AMEREN COMMON 023608102 2,919 -3,279 -52.90 255 -42.05 0.0005
2024-08-14 2024-06-30 13F AMEREN COMMON 023608102 6,198 2,315 59.62 441 53.31 0.0009
2024-05-14 2024-03-31 13F AMEREN COMMON 023608102 3,883 -3,028 -43.81 287 -42.48 0.0006
2024-02-14 2023-12-31 13F AMEREN COMMON 023608102 6,911 -2,041 -22.80 500 -25.41 0.0011
2023-11-13 2023-09-30 13F AMEREN COMMON 023608102 8,952 412 4.82 670 -4.02 0.0018
2023-08-11 2023-06-30 13F AMEREN COMMON 023608102 8,540 -2,142 -20.05 697 -24.40 0.0018
2023-05-15 2023-03-31 13F AMEREN COMMON 023608102 10,682 -773 -6.75 923 92,100.00 0.0023
2023-02-13 2022-12-31 13F AMEREN COMMON 023608102 11,455 2,608 29.48 1 -99.86 0.0027
2022-11-15 2022-09-30 13F AMEREN COMMON 023608102 8,847 -386 -4.18 713 -14.51 0.0021
2022-08-08 2022-06-30 13F AMEREN COMMON 023608102 9,233 -1,097 -10.62 834 -13.84 0.0023
2022-05-13 2022-03-31 13F AMEREN COMMON 023608102 10,330 3,732 56.56 968 64.91 0.0024
2022-02-09 2021-12-31 13F AMEREN COMMON 023608102 6,598 -490 -6.91 587 2.26 0.0014
2021-11-12 2021-09-30 13F AMEREN COMMON 023608102 7,088 2,951 71.33 574 73.41 0.0015
2021-08-11 2021-06-30 13F AMEREN COMMON 023608102 4,137 -29 -0.70 331 -2.36 0.0009
2021-05-13 2021-03-31 13F AMEREN COMMON 023608102 4,166 -331 -7.36 339 -3.42 0.0010
2021-02-11 2020-12-31 13F AMEREN COMMON 023608102 4,497 -18 -0.40 351 -1.68 0.0010
2020-11-12 2020-09-30 13F AMEREN COMMON 023608102 4,515 -1,547 -25.52 357 -16.39 0.0012
2020-10-22 2020-06-30 13F/A-1 AMEREN COMMON 023608102 6,062 964 18.91 427 15.09 0.0016
2020-08-14 2020-06-30 13F AMEREN COMMON 023608102 6,836 1,738 525 1,040.4307
2020-05-14 2020-03-31 13F AMEREN COMMON 023608102 5,098 -1,418 -21.76 371 -25.80 0.0017
2020-02-14 2019-12-31 13F AMEREN COMMON 023608102 6,516 -36 -0.55 500 -4.58 0.0018
2019-11-14 2019-09-30 13F AMEREN Common 023608102 6,552 796 13.83 524 21.02 0.0021
2019-08-14 2019-06-30 13F AMEREN COMMON 023608102 5,756 1,799 45.46 433 48.80 0.0017
2019-05-14 2019-03-31 13F AMEREN COMMON 023608102 3,957 3,957 291 0.0017
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.