아메렌 코퍼레이션
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionNissay Asset Management Corp /japan/ /adv
Latest Disclosed Ownership35,137 shares
Latest Disclosed Value $ 3,862,259
Nissay Asset Management Corp /japan/ /adv reports 1.39% increase in ownership of AEE / Ameren Corporation

On May 15, 2026 - Nissay Asset Management Corp /japan/ /adv filed a 13F-HR form disclosing ownership of 35,137 shares of Ameren Corporation (MX:AEE) valued at $3,862,259 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 34,657 shares of Ameren Corporation. This represents a change in shares of 1.39% 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)
2026-05-15 2026-03-31 13F AMEREN COM 023608102 35,137 480 1.39 3,862 11.62 0.0205
2026-02-17 2025-12-31 13F AMEREN COM 023608102 34,657 -698 -1.97 3,461 -6.23 0.0180
2025-11-14 2025-09-30 13F AMEREN COM 023608102 35,355 1,118 3.27 3,690 12.23 0.0204
2025-08-14 2025-06-30 13F AMEREN COM 023608102 34,237 1,557 4.76 3,288 0.21 0.0192
2025-05-15 2025-03-31 13F AMEREN COM 023608102 32,680 404 1.25 3,281 12.83 0.0213
2025-02-14 2024-12-31 13F AMEREN COM 023608102 32,276 91 0.28 2,909 3.34 0.0177
2024-11-14 2024-09-30 13F AMEREN COM 023608102 32,185 992 3.18 2,815 26.87 0.0178
2024-08-14 2024-06-30 13F AMEREN COM 023608102 31,193 1,324 4.43 2,218 0.41 0.0147
2024-05-15 2024-03-31 13F AMEREN COM 023608102 29,869 607 2.07 2,209 4.40 0.0153
2024-02-14 2023-12-31 13F AMEREN COM 023608102 29,262 1,147 4.08 2,117 0.62 0.0170
2023-11-14 2023-09-30 13F AMEREN COM 023608102 28,115 1,006 3.71 2,104 -4.97 0.0186
2023-08-14 2023-06-30 13F AMEREN COM 023608102 27,109 -14 -0.05 2,214 -5.55 0.0191
2023-05-15 2023-03-31 13F AMEREN COM 023608102 27,123 -1,065 -3.78 2,343 -6.50 0.0209
2023-02-14 2022-12-31 13F AMEREN COM 023608102 28,188 -409 -1.43 2,506 8.81 0.0240
2022-11-14 2022-09-30 13F AMEREN COM 023608102 28,597 1,034 3.75 2,303 -7.55 0.0242
2022-08-15 2022-06-30 13F AMEREN COM 023608102 27,563 -259 -0.93 2,491 -4.52 0.0248
2022-05-16 2022-03-31 13F AMEREN COM 023608102 27,822 803 2.97 2,609 8.48 0.0227
2022-02-14 2021-12-31 13F AMEREN COM 023608102 27,019 1,007 3.87 2,405 14.14 0.0184
2021-11-10 2021-09-30 13F AMEREN COM 023608102 26,012 1,280 5.18 2,107 6.41 0.0179
2021-08-13 2021-06-30 13F AMEREN COM 023608102 24,732 762 3.18 1,980 1.54 0.0174
2021-05-11 2021-03-31 13F AMEREN COM 023608102 23,970 -550 -2.24 1,950 1.88 0.0192
2021-02-08 2020-12-31 13F AMEREN COM 023608102 24,520 296 1.22 1,914 -0.10 0.0288
2020-10-20 2020-09-30 13F AMEREN COM 023608102 24,224 628 2.66 1,916 15.42 0.0324
2020-07-27 2020-06-30 13F AMEREN COM 023608102 23,596 569 2.47 1,660 -1.01 0.0322
2020-05-05 2020-03-31 13F AMEREN COM 023608102 23,027 580 2.58 1,677 -2.73 0.0427
2020-02-14 2019-12-31 13F AMEREN COM 023608102 22,447 562 2.57 1,724 -1.60 0.0383
2019-11-14 2019-09-30 13F AMEREN COM 023608102 21,885 1,028 4.93 1,752 11.81 0.0434
2019-08-07 2019-06-30 13F AMEREN COM 023608102 20,857 448 2.20 1,567 4.40 0.0396
2019-05-03 2019-03-31 13F AMEREN COM 023608102 20,409 664 3.36 1,501 16.54 0.0397
2019-02-06 2018-12-31 13F AMEREN COM 023608102 19,745 128 0.65 1,288 3.87 0.0392
2018-10-30 2018-09-30 13F AMEREN COM 023608102 19,617 655 3.45 1,240 7.45 0.0334
2018-08-08 2018-06-30 13F AMEREN COM 023608102 18,962 1,531 8.78 1,154 16.92 0.0338
2018-05-14 2018-03-31 13F AMEREN COM 023608102 17,431 247 1.44 987 -2.57 0.0308
2018-02-14 2017-12-31 13F AMEREN COM 023608102 17,184 17,184 1,013 0.0309
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.