Ameren Corporation
US ˙ NYSE ˙ US0236081024

SecurityAEE / Ameren Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership2,177,609 shares
Latest Disclosed Value $ 239,362,782
Northern Trust Corp reports 0.49% increase in ownership of AEE / Ameren Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 2,177,609 shares of Ameren Corporation (US:AEE) valued at $239,362,781 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,167,057 shares of Ameren Corporation. This represents a change in shares of 0.49% during the quarter. The current value of the position is $232,982,387 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.

Upgrade to unlock premium data and export to Excel .

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 2,177,609 10,552 0.49 239,363 10.61 0.0065
2026-02-17 2025-12-31 13F AMEREN COM 023608102 2,167,057 -134,577 -5.85 216,402 -9.92 0.0057
2025-11-14 2025-09-30 13F AMEREN COM 023608102 2,301,634 -73,041 -3.08 240,245 5.34 0.0307
2025-08-13 2025-06-30 13F AMEREN COM 023608102 2,374,675 -104,915 -4.23 228,064 -8.39 0.0314
2025-05-13 2025-03-31 13F AMEREN COM 023608102 2,479,590 57,545 2.38 248,951 15.31 0.0370
2025-02-14 2024-12-31 13F AMEREN COM 023608102 2,422,045 153,031 6.74 215,901 8.80 0.0306
2024-11-13 2024-09-30 13F AMEREN COM 023608102 2,269,014 -93,310 -3.95 198,448 18.13 0.0325
2024-08-14 2024-06-30 13F AMEREN COM 023608102 2,362,324 46,842 2.02 167,985 -1.91 0.0283
2024-05-14 2024-03-31 13F AMEREN COM 023608102 2,315,482 -66,007 -2.77 171,253 -0.59 0.0296
2024-02-13 2023-12-31 13F AMEREN COM 023608102 2,381,489 -48,909 -2.01 172,277 -5.27 0.0312
2023-11-13 2023-09-30 13F AMEREN COM 023608102 2,430,398 29,921 1.25 181,867 -7.23 0.0352
2023-08-11 2023-06-30 13F AMEREN COM 023608102 2,400,477 -158,138 -6.18 196,047 -11.31 0.0377
2023-05-15 2023-03-31 13F AMEREN COM 023608102 2,558,615 -9,465 -0.37 221,039 -3.20 0.0438
2023-02-13 2022-12-31 13F AMEREN COM 023608102 2,568,080 70,843 2.84 228,354 13.52 0.0479
2022-11-14 2022-09-30 13F AMEREN COM 023608102 2,497,237 -20,317 -0.81 201,152 -11.58 0.0459
2022-08-12 2022-06-30 13F AMEREN COM 023608102 2,517,554 -517 -0.02 227,486 -3.65 0.0487
2022-05-13 2022-03-31 13F AMEREN COM 023608102 2,518,071 -189,538 -7.00 236,095 -2.04 0.0415
2022-02-08 2021-12-31 13F AMEREN COM 023608102 2,707,609 7,290 0.27 241,004 10.18 0.0395
2021-11-15 2021-09-30 13F AMEREN COM 023608102 2,700,319 -123,725 -4.38 218,727 -3.23 0.0387
2021-08-13 2021-06-30 13F AMEREN COM 023608102 2,824,044 -4,892 -0.17 226,037 -1.79 0.0398
2021-05-12 2021-03-31 13F AMEREN COM 023608102 2,828,936 -265,137 -8.57 230,163 -4.70 0.0428
2021-02-11 2020-12-31 13F AMEREN COM 023608102 3,094,073 -105,713 -3.30 241,523 -4.55 0.0470
2020-11-16 2020-09-30 13F AMEREN COM 023608102 3,199,786 56,685 1.80 253,038 14.42 0.0555
2020-08-14 2020-06-30 13F AMEREN COM 023608102 3,143,101 -55,934 -1.75 221,148 -5.08 0.0524
2020-05-14 2020-03-31 13F AMEREN COM 023608102 3,199,035 -40,123 -1.24 232,986 -6.34 0.0669
2020-02-14 2019-12-31 13F AMEREN COM 023608102 3,239,158 -109,358 -3.27 248,768 -7.19 0.0557
2019-11-13 2019-09-30 13F AMEREN COM 023608102 3,348,516 -162,052 -4.62 268,050 1.66 0.0642
2019-08-13 2019-06-30 13F AMEREN COM 023608102 3,510,568 -7,528 -0.21 263,678 1.90 0.0625
2019-05-13 2019-03-31 13F AMEREN COM 023608102 3,518,096 128,079 3.78 258,755 17.01 0.0639
2019-02-12 2018-12-31 13F AMEREN COM 023608102 3,390,017 345,521 11.35 221,132 14.89 0.0620
2018-11-14 2018-09-30 13F AMEREN COM 023608102 3,044,496 47,685 1.59 192,472 5.55 0.0471
2018-09-18 2018-06-30 13F/A-1 AMEREN COM 023608102 2,996,811 -26,883 -0.89 182,356 6.50 0.0463
2018-08-14 2018-06-30 13F AMEREN COM 023608102 3,012,290 -11,404 183,298
2018-05-09 2018-03-31 13F AMEREN COM 023608102 3,023,694 -43,223 -1.41 171,232 -5.35 0.0445
2018-02-14 2017-12-31 13F AMEREN COM 023608102 3,066,917 52,059 1.73 180,917 3.75 0.0458
2017-11-13 2017-09-30 13F AMEREN COM 023608102 3,014,858 260,033 9.44 174,380 15.78 0.0454
2017-08-11 2017-06-30 13F AMEREN COM 023608102 2,754,825 -14,439 -0.52 150,607 -0.38 0.0421
2017-05-12 2017-03-31 13F AMEREN COM 023608102 2,769,264 101,071 3.79 151,175 8.00 0.0436
2017-02-13 2016-12-31 13F AMEREN COM 023608102 2,668,193 -59,820 -2.19 139,974 4.33 0.0429
2016-11-09 2016-09-30 13F AMEREN COM 023608102 2,728,013 -8,277 -0.30 134,164 -8.49 0.0418
2016-08-12 2016-06-30 13F AMEREN COM 023608102 2,736,290 -118,031 -4.14 146,611 4.28 0.0476
2016-08-19 2016-03-31 13F/A-1 AMEREN COM 023608102 2,854,321 -53,609 -1.84 140,598 11.84 0.0466
2016-05-13 2016-03-31 13F Ameren COMM 023608102 2,854,307 143,002
2016-02-12 2015-12-31 13F Ameren COMM 023608102 2,907,930 -130,807 -4.30 125,711 -2.13 0.0417
2015-11-12 2015-09-30 13F Ameren COMM 023608102 3,038,737 270,836 9.78 128,447 23.16 0.0429
2015-08-13 2015-06-30 13F AMEREN COM 023608102 2,767,901 -417,340 -13.10 104,294 -22.41 0.0707
2015-08-13 2015-06-30 13F Ameren COMM 002360810 354,588 -2,830,653 13,361 0.0091
2015-05-14 2015-03-31 13F Ameren COMM 023608102 3,185,241 -103,332 -3.14 134,416 -11.39 0.0404
2015-02-12 2014-12-31 13F Ameren COM 023608102 3,288,573 -133,030 -3.89 151,702 15.67 0.0458
2014-11-13 2014-09-30 13F Ameren COMM 023608102 3,421,603 329,081 10.64 131,149 3.74 0.0412
2014-08-14 2014-06-30 13F AMEREN com 023608102 3,092,522 -407,596 -11.65 126,422 -12.33 0.0394
2014-05-14 2014-03-31 13F AMEREN COMM 023608102 3,500,118 316,429 9.94 144,204 25.26 0.0454
2014-02-21 2013-12-31 13F/A-1 AMEREN COM 023608102 3,183,689 -22,756 -0.71 115,122 3.05 0.0369
2014-02-12 2013-12-31 13F AMEREN COM 023608102 3,183,689 115,122
2013-11-13 2013-09-30 13F AMEREN COM 023608102 3,206,445 -128,302 -3.85 111,713 -2.73 0.0393
2013-08-09 2013-06-30 13F AMEREN COM 023608102 3,334,747 3,334,747 114,849 0.0416
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.