Ameren Corporation
US ˙ NYSE ˙ US0236081024

SecurityAEE / Ameren Corporation
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership87,570 shares
Latest Disclosed Value $ 9,625,694
Squarepoint Ops LLC reports 82.21% decrease in ownership of AEE / Ameren Corporation

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 87,570 shares of Ameren Corporation (US:AEE) valued at $9,625,694 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 492,356 shares of Ameren Corporation. This represents a change in shares of -82.21% during the quarter. The current value of the position is $9,302,561 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 87,570 -404,786 -82.21 9,626 -80.42 0.0113
2026-02-13 2025-12-31 13F AMEREN COM 023608102 492,356 -311,165 -38.73 49,167 -41.38 0.0523
2025-11-14 2025-09-30 13F AMEREN COM 023608102 803,521 239,650 42.50 83,872 54.87 0.0843
2025-08-27 2025-06-30 13F/A-1 AMEREN COM 023608102 563,871 386,866 218.56 54,154 204.73 0.0563
2025-08-14 2025-06-30 13F AMEREN COM 023608102 563,871 386,866 54,154 0.0563
2025-08-27 2025-03-31 13F/A-1 AMEREN COM 023608102 177,005 132,209 295.14 17,771 345.05 0.0216
2025-05-15 2025-03-31 13F AMEREN COM 023608102 177,005 132,209 17,771 0.0216
2025-02-14 2024-12-31 13F AMEREN COM 023608102 44,796 -84,625 -65.39 3,993 -64.72 0.0039
2024-11-14 2024-09-30 13F AMEREN COM 023608102 129,421 -66,482 -33.94 11,319 -18.74 0.0177
2024-08-14 2024-06-30 13F AMEREN COM 023608102 195,903 21,794 12.52 13,931 8.18 0.0230
2024-05-15 2024-03-31 13F AMEREN COM 023608102 174,109 49,184 39.37 12,877 42.49 0.0222
2024-02-14 2023-12-31 13F AMEREN COM 023608102 124,925 -58,315 -31.82 9,037 -34.09 0.0171
2023-11-14 2023-09-30 13F AMEREN COM 023608102 183,240 48,531 36.03 13,712 24.63 0.0339
2023-08-14 2023-06-30 13F AMEREN COM 023608102 134,709 -122,710 -47.67 11,002 -50.53 0.0337
2023-05-15 2023-03-31 13F AMEREN COM 023608102 257,419 144,709 128.39 22,238 121.89 0.0906
2023-02-14 2022-12-31 13F AMEREN COM 023608102 112,710 -149,833 -57.07 10,022 -52.61 0.0396
2022-11-14 2022-09-30 13F AMEREN COM 023608102 262,543 -44,268 -14.43 21,148 -23.72 0.1067
2022-08-15 2022-06-30 13F AMEREN COM 023608102 306,811 -52,917 -14.71 27,723 -17.80 0.1542
2022-05-16 2022-03-31 13F AMEREN COM 023608102 359,728 267,780 291.23 33,728 312.12 0.1443
2022-02-14 2021-12-31 13F AMEREN COM 023608102 91,948 40,000 77.00 8,184 94.49 0.0216
2021-11-15 2021-09-30 13F AMEREN COM 023608102 51,948 -68,520 -56.88 4,208 -56.36 0.0121
2021-08-16 2021-06-30 13F AMEREN COM 023608102 120,468 120,468 9,642 0.0367
2021-05-17 2021-03-31 13F AMEREN COM 023608102 0 -29,871 -100.00 0 -100.00
2021-02-16 2020-12-31 13F AMEREN COM 023608102 29,871 29,871 2,332 0.0174
2020-05-15 2020-03-31 13F AMEREN COM 023608102 0 -237,383 -100.00 0 -100.00
2020-02-14 2019-12-31 13F AMEREN COM 023608102 237,383 237,383 18,231 0.1084
2019-11-14 2019-09-30 13F AMEREN COM 023608102 0 -60,673 -100.00 0 -100.00
2019-08-14 2019-06-30 13F AMEREN COM 023608102 60,673 -16,381 -21.26 4,557 -19.59 0.0444
2019-05-15 2019-03-31 13F AMEREN COM 023608102 77,054 -22,413 -22.53 5,667 -12.65 0.0600
2019-02-14 2018-12-31 13F AMEREN COM 023608102 99,467 -132,708 -57.16 6,488 -55.80 0.0755
2018-11-14 2018-09-30 13F AMEREN COM 023608102 232,175 -35,524 -13.27 14,678 -9.89 0.1756
2018-08-14 2018-06-30 13F AMEREN COM 023608102 267,699 103,811 63.34 16,289 75.51 0.2159
2018-05-15 2018-03-31 13F AMEREN COM 023608102 163,888 158,780 3,108.46 9,281 2,983.39 0.1474
2018-02-14 2017-12-31 13F AMEREN COM 023608102 5,108 -27,737 -84.45 301 -84.16 0.0052
2017-11-14 2017-09-30 13F AMEREN COM 023608102 32,845 -86,293 -72.43 1,900 -70.83 0.0366
2017-08-14 2017-06-30 13F AMEREN COM 023608102 119,138 96,396 423.87 6,513 424.82 0.1282
2017-05-15 2017-03-31 13F AMEREN COM 023608102 22,742 22,742 -80.91 1,241 -80.95 0.0342
2017-02-14 2016-12-31 13F AMEREN COM 023608102 0 -35,029 -100.00 0 -100.00
2016-11-14 2016-09-30 13F AMEREN COM 023608102 35,029 19,724 128.87 1,723 110.12 0.1144
2016-08-15 2016-06-30 13F AMEREN COM 023608102 15,305 15,305 -56.31 820 -52.41 0.0512
2016-05-16 2016-03-31 13F AMEREN COM 023608102 0 -11,800 -100.00 0 -100.00
2016-02-16 2015-12-31 13F AMEREN COM 023608102 11,800 11,800 510 0.0559
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.