Ameren Corporation
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionMagellan Asset Management Ltd
ManagerHamish Douglass
Latest Disclosed Ownership298,332 shares
Latest Disclosed Value $ 32,792,653
Magellan Asset Management Ltd reports 30.40% increase in ownership of AEE / Ameren Corporation

On May 11, 2026 - Magellan Asset Management Ltd filed a 13F-HR form disclosing ownership of 298,332 shares of Ameren Corporation (MX:AEE) valued at $32,792,653 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 228,779 shares of Ameren Corporation. This represents a change in shares of 30.40% 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)
2026-05-11 2026-03-31 13F AMEREN COM 023608102 298,332 69,553 30.40 32,793 43.54 0.4254
2026-02-10 2025-12-31 13F AMEREN COM 023608102 228,779 3,057 1.35 22,846 -3.03 0.2777
2025-11-10 2025-09-30 13F AMEREN COM 023608102 225,722 15,804 7.53 23,561 16.87 0.2790
2025-08-07 2025-06-30 13F AMEREN COM 023608102 209,918 16,590 8.58 20,161 3.86 0.2304
2025-05-12 2025-03-31 13F AMEREN COM 023608102 193,328 -8,089 -4.02 19,410 8.11 0.2360
2025-02-12 2024-12-31 13F AMEREN COM 023608102 201,417 -34,766 -14.72 17,954 -13.08 0.1972
2024-11-14 2024-09-30 13F AMEREN COM 023608102 236,183 -8,180 -3.35 20,657 18.88 0.2057
2024-08-13 2024-06-30 13F AMEREN COM 023608102 244,363 22,600 10.19 17,377 5.94 0.1654
2024-05-14 2024-03-31 13F AMEREN COM 023608102 221,763 -2,579 -1.15 16,402 1.07 0.1567
2024-02-13 2023-12-31 13F AMEREN COM 023608102 224,342 3,971 1.80 16,229 -1.59 0.1617
2023-11-13 2023-09-30 13F AMEREN COM 023608102 220,371 14,367 6.97 16,490 -1.99 0.1753
2023-08-11 2023-06-30 13F AMEREN COM 023608102 206,004 18,976 10.15 16,824 4.13 0.1497
2023-05-12 2023-03-31 13F AMEREN COM 023608102 187,028 -6,763 -3.49 16,157 -6.23 0.1380
2023-02-13 2022-12-31 13F AMEREN COM 023608102 193,791 -3,257 -1.65 17,232 8.56 0.1474
2022-11-10 2022-09-30 13F AMEREN COM 023608102 197,048 -1,240 -0.63 15,872 -11.41 0.1109
2022-08-12 2022-06-30 13F AMEREN COM 023608102 198,288 -24,867 -11.14 17,917 -14.37 0.0978
2022-05-13 2022-03-31 13F AMEREN COM 023608102 223,155 -24,686 -9.96 20,923 -5.15 0.0810
2022-02-11 2021-12-31 13F AMEREN COM 023608102 247,841 17,098 7.41 22,060 18.03 0.0562
2021-11-04 2021-09-30 13F AMEREN COM 023608102 230,743 33,381 16.91 18,690 18.31 0.0373
2021-08-12 2021-06-30 13F AMEREN COM 023608102 197,362 -15,626 -7.34 15,797 -8.84 0.0313
2021-05-13 2021-03-31 13F AMEREN COM 023608102 212,988 -22,669 -9.62 17,329 -5.80 0.0363
2021-02-11 2020-12-31 13F AMEREN COM 023608102 235,657 5,036 2.18 18,395 0.86 0.0425
2020-11-12 2020-09-30 13F AMEREN COM 023608102 230,621 19,378 9.17 18,238 22.71 0.0465
2020-08-14 2020-06-30 13F AMEREN COM 023608102 211,243 23,123 12.29 14,863 8.48 0.0445
2020-05-14 2020-03-31 13F AMEREN COM 023608102 188,120 -13,708 -6.79 13,701 -11.61 0.0472
2020-02-13 2019-12-31 13F AMEREN COM 023608102 201,828 0 0.00 15,500 -4.06 0.0408
2019-11-13 2019-09-30 13F AMEREN COM 023608102 201,828 4,019 2.03 16,156 8.74 0.0464
2019-08-13 2019-06-30 13F AMEREN COM 023608102 197,809 5,867 3.06 14,857 5.24 0.0428
2019-05-14 2019-03-31 13F AMEREN COM 023608102 191,942 22,295 13.14 14,117 27.57 0.0448
2019-03-11 2018-12-31 13F/A-1 AMEREN COM 023608102 169,647 -10,481 -5.82 11,066 -2.83 0.0407
2019-02-14 2018-12-31 13F AMEREN COM 023608102 169,647 -10,481 11,066
2018-11-14 2018-09-30 13F AMEREN COM 023608102 180,128 -3,463 -1.89 11,388 1.93 0.0372
2018-08-13 2018-06-30 13F AMEREN COM 023608102 183,591 -3,165 -1.69 11,172 5.64 0.0392
2018-05-15 2018-03-31 13F AMEREN COM 023608102 186,756 23,495 14.39 10,576 9.81 0.0390
2018-02-14 2017-12-31 13F AMEREN COM 023608102 163,261 101 0.06 9,631 2.06 0.0320
2017-11-13 2017-09-30 13F AMEREN COM 023608102 163,160 843 0.52 9,437 6.34 0.0356
2017-08-11 2017-06-30 13F AMEREN COM 023608102 162,317 11,849 7.87 8,874 10.93 0.0372
2017-05-16 2017-03-31 13F AMEREN COM 023608102 150,468 -36,412 -19.48 8,000 -18.40 0.0353
2017-02-15 2016-12-31 13F AMEREN COM 023608102 186,880 1,921 1.04 9,804 7.78 0.0460
2016-11-14 2016-09-30 13F AMEREN COM 023608102 184,959 -1,409 -0.76 9,096 -8.91 0.0456
2016-08-19 2016-06-30 13F AMEREN COM 023608102 186,368 -20,316 -9.83 9,986 -3.56 0.0560
2016-05-13 2016-03-31 13F AMEREN COM 023608102 206,684 -2,079 -1.00 10,355 14.74 0.0558
2016-02-11 2015-12-31 13F AMEREN COM 023608102 208,763 -5,632 -2.63 9,025 -0.41 0.0505
2015-11-10 2015-09-30 13F AMEREN COM 023608102 214,395 3,733 1.77 9,062 14.16 0.0569
2015-08-13 2015-06-30 13F AMEREN COM 023608102 210,662 31,352 17.48 7,938 4.90 0.0498
2015-05-12 2015-03-31 13F AMEREN COM 023608102 179,310 -15,921 -8.15 7,567 -15.98 0.0487
2015-02-12 2014-12-31 13F AMEREN COM 023608102 195,231 -65,418 -25.10 9,006 -9.86 0.0641
2014-11-13 2014-09-30 13F AMEREN COM 023608102 260,649 11,497 4.61 9,991 -1.90 0.0786
2014-08-12 2014-06-30 13F AMEREN COM 023608102 249,152 -99,495 -28.54 10,185 -29.09 0.0768
2014-05-14 2014-03-31 13F AMEREN COM 023608102 348,647 -11,383 -3.16 14,364 10.33 0.1130
2014-02-11 2013-12-31 13F AMEREN COM 023608102 360,030 22,953 6.81 13,019 10.86 0.1074
2013-11-13 2013-09-30 13F AMEREN COM 023608102 337,077 337,077 11,744 0.1264
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.