阿美倫公司
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionLMR Partners LLP
Latest Disclosed Ownership4,024 shares
Latest Disclosed Value $ 442,318
LMR Partners LLP reports 24.22% decrease in ownership of AEE / Ameren Corporation

On May 15, 2026 - LMR Partners LLP filed a 13F-HR form disclosing ownership of 4,024 shares of Ameren Corporation (MX:AEE) valued at $442,318 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,310 shares of Ameren Corporation. This represents a change in shares of -24.22% 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 4,024 -1,286 -24.22 442 -16.60 0.0010
2026-02-17 2025-12-31 13F AMEREN COM 023608102 5,310 262 5.19 530 0.76 0.0010
2025-11-14 2025-09-30 13F AMEREN COM 023608102 5,048 1,951 63.00 527 77.10 0.0023
2025-08-14 2025-06-30 13F AMEREN COM 023608102 3,097 570 22.56 297 17.39 0.0021
2025-05-15 2025-03-31 13F AMEREN COM 023608102 2,527 2,527 254 0.0024
2024-02-14 2023-12-31 13F AMEREN COM 023608102 0 -149,932 -100.00 0 -100.00
2023-11-14 2023-09-30 13F AMEREN COM 023608102 149,932 41,180 37.87 11,219 26.33 0.1261
2023-08-14 2023-06-30 13F AMEREN COM 023608102 108,752 108,752 8,882 0.0986
2023-05-15 2023-03-31 13F AMEREN COM 023608102 0 -159,989 -100.00 0 -100.00
2023-02-14 2022-12-31 13F AMEREN COM 023608102 159,989 110,634 224.16 14,226 257.80 0.2483
2022-11-14 2022-09-30 13F AMEREN COM 023608102 49,355 49,355 3,976 0.0731
2020-08-14 2020-06-30 13F AMEREN COM 023608102 0 -4,046 -100.00 0 -100.00
2020-08-14 2020-03-31 13F/A-1 AMEREN COM 023608102 4,046 4,046 316 0.0147
2020-05-15 2020-03-31 13F AMEREN COM 023608102 4,046 4,046 316 328.4041
2019-08-14 2019-06-30 13F AMEREN COM 023608102 0 -7,271 -100.00 0 -100.00
2019-05-15 2019-03-31 13F AMEREN COM 023608102 7,271 -4,542 -38.45 535 -30.61 0.0273
2019-02-14 2018-12-31 13F AMEREN COM 023608102 11,813 11,813 771 0.0378
2018-08-03 2018-06-30 13F AMEREN COM 023608102 0 -13,777 -100.00 0 -100.00
2018-05-04 2018-03-31 13F AMEREN COM 023608102 13,777 0 0.00 813 0.00 0.0835
2018-01-30 2017-12-31 13F AMEREN COM 023608102 13,777 13,777 813 0.0835
2017-11-09 2017-09-30 13F AMEREN COM 023608102 0 -28,758 -100.00 0 -100.00
2017-08-03 2017-06-30 13F AMEREN COM 023608102 28,758 28,758 1,572 0.0986
2017-05-11 2017-03-31 13F AMEREN COM 023608102 0 -14,865 -100.00 0 -100.00
2017-02-07 2016-12-31 13F AMEREN COM 023608102 14,865 1,984 15.40 780 23.03 0.1198
2016-11-04 2016-09-30 13F/A-1 AMEREN COM 023608102 12,881 7,811 154.06 634 133.95 0.0602
2016-11-01 2016-09-30 13F AMEREN COM 023608102 12,881 634
2016-11-04 2016-06-30 13F/A-1 AMEREN COM 023608102 5,070 -21,736 -81.09 271 -79.82 0.0420
2016-07-28 2016-06-30 13F AMEREN COM 023608102 5,070 271
2016-05-04 2016-03-31 13F AMEREN COM 023608102 26,806 26,806 0.00 1,343 0.1467
2015-08-10 2015-06-30 13F AMEREN COM 023608102 0 -7,087 -100.00 0 -100.00
2015-04-20 2015-03-31 13F AMEREN COM 023608102 7,087 2,268 47.06 299 34.08 0.0413
2015-01-20 2014-12-31 13F AMEREN COM 023608102 4,819 4,819 223 0.0291
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.