아메렌 코퍼레이션
MX ˙ BMV ˙ US0236081024
SecurityMX:AEE / Ameren Corporation
InstitutionJennison Associates Llc
Latest Disclosed Ownership1,409,566 shares
Latest Disclosed Value $ 154,939,494
Jennison Associates Llc reports 2.14% decrease in ownership of AEE / Ameren Corporation

On May 6, 2026 - Jennison Associates Llc filed a 13F-HR form disclosing ownership of 1,409,566 shares of Ameren Corporation (MX:AEE) valued at $154,939,494 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 1,440,327 shares of Ameren Corporation. This represents a change in shares of -2.14% 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)
2026-05-06 2026-03-31 13F AMEREN COM 023608102 1,409,566 -30,761 -2.14 154,939 7.72 0.1066
2026-01-30 2025-12-31 13F AMEREN COM 023608102 1,440,327 -27,488 -1.87 143,831 -6.12 0.0864
2025-10-30 2025-09-30 13F AMEREN COM 023608102 1,467,815 -203,712 -12.19 153,211 -4.56 0.0892
2025-08-01 2025-06-30 13F AMEREN COM 023608102 1,671,527 -20,588 -1.22 160,533 -5.51 0.0952
2025-05-05 2025-03-31 13F AMEREN COM 023608102 1,692,115 223,078 15.19 169,888 29.74 0.1192
2025-01-24 2024-12-31 13F AMEREN COM 023608102 1,469,037 434,889 42.05 130,950 44.78 0.0795
2024-11-08 2024-09-30 13F AMEREN COM 023608102 1,034,148 258,858 33.39 90,447 64.06 0.0562
2024-08-05 2024-06-30 13F AMEREN COM 023608102 775,290 -9,971 -1.27 55,131 -5.07 0.0353
2024-05-02 2024-03-31 13F AMEREN COM 023608102 785,261 -280,611 -26.33 58,078 -24.68 0.0388
2024-02-01 2023-12-31 13F AMEREN COM 023608102 1,065,872 -446,314 -29.51 77,105 -31.86 0.0575
2023-10-31 2023-09-30 13F AMEREN COM 023608102 1,512,186 -80,581 -5.06 113,157 -13.01 0.0961
2023-08-03 2023-06-30 13F AMEREN COM 023608102 1,592,767 5,471 0.34 130,081 -5.14 0.1067
2023-04-26 2023-03-31 13F AMEREN COM 023608102 1,587,296 -1,587,286 -50.00 137,127 -51.42 0.1258
2023-02-09 2022-12-31 13F AMEREN COM 023608102 3,174,582 1,109,611 53.73 282,284 69.71 0.2861
2022-11-01 2022-09-30 13F AMEREN COM 023608102 2,064,971 -225,146 -9.83 166,333 -19.62 0.1654
2022-08-02 2022-06-30 13F AMEREN COM 023608102 2,290,117 139,080 6.47 206,935 2.61 0.2065
2022-05-11 2022-03-31 13F AMEREN COM 023608102 2,151,037 16,872 0.79 201,681 6.17 0.1485
2022-02-08 2021-12-31 13F AMEREN COM 023608102 2,134,165 -1,187 -0.06 189,962 9.83 0.1205
2021-11-09 2021-09-30 13F AMEREN COM 023608102 2,135,352 -56,303 -2.57 172,964 -1.40 0.1118
2021-08-12 2021-06-30 13F AMEREN COM 023608102 2,191,655 -11,659 -0.53 175,420 -2.14 0.1162
2021-05-11 2021-03-31 13F AMEREN COM 023608102 2,203,314 -189,695 -7.93 179,262 -4.03 0.1312
2021-02-05 2020-12-31 13F AMEREN COM 023608102 2,393,009 -34,539 -1.42 186,798 -2.69 0.1332
2020-11-04 2020-09-30 13F AMEREN COM 023608102 2,427,548 69,711 2.96 191,970 15.72 0.1543
2020-08-06 2020-06-30 13F AMEREN COM 023608102 2,357,837 -138,467 -5.55 165,897 -8.75 0.1500
2020-05-06 2020-03-31 13F AMEREN COM 023608102 2,496,304 71,487 2.95 181,806 -2.37 0.2209
2020-02-07 2019-12-31 13F AMEREN COM 023608102 2,424,817 -6,487 -0.27 186,226 -4.32 0.1879
2019-11-08 2019-09-30 13F AMEREN COM 023608102 2,431,304 -2,784 -0.11 194,626 6.46 0.2056
2019-08-06 2019-06-30 13F AMEREN COM 023608102 2,434,088 -60,309 -2.42 182,824 -0.35 0.1828
2019-05-10 2019-03-31 13F AMEREN COM 023608102 2,494,397 -260,142 -9.44 183,463 2.11 0.1823
2019-02-06 2018-12-31 13F AMEREN COM 023608102 2,754,539 356,027 14.84 179,679 18.50 0.2010
2018-11-08 2018-09-30 13F AMEREN COM 023608102 2,398,512 186,956 8.45 151,634 12.68 0.1396
2018-08-02 2018-06-30 13F AMEREN COM 023608102 2,211,556 397,126 21.89 134,573 30.97 0.1312
2018-04-20 2018-03-31 13F AMEREN COM 023608102 1,814,430 0 0.00 102,751 -4.00 0.1022
2018-01-25 2017-12-31 13F AMEREN COM 023608102 1,814,430 0 0.00 107,033 1.99 0.1057
2017-11-03 2017-09-30 13F AMEREN COM 023608102 1,814,430 0 0.00 104,947 5.80 0.1075
2017-08-04 2017-06-30 13F AMEREN COM 023608102 1,814,430 -335,000 -15.59 99,195 -15.46 0.1052
2017-08-02 2017-03-31 13F/A-1 AMEREN COM 023608102 2,149,430 -3,925 -0.18 117,337 3.87 0.1259
2017-04-28 2017-03-31 13F AMEREN COM 023608102 2,149,430 -3,925 117,337
2017-08-02 2016-12-31 13F/A-1 AMEREN COM 023608102 2,153,355 -87,985 -3.93 112,965 2.48 0.1261
2017-02-06 2016-12-31 13F AMEREN COM 023608102 2,153,355 112,965
2016-11-01 2016-09-30 13F AMEREN COM 023608102 2,241,340 -47,320 -2.07 110,229 -10.11 0.1188
2016-08-03 2016-06-30 13F AMEREN COM 023608102 2,288,660 -53,212 -2.27 122,626 4.52 0.1345
2016-05-03 2016-03-31 13F AMEREN COM 023608102 2,341,872 0 0.00 117,328 15.89 0.1231
2016-02-10 2015-12-31 13F AMEREN COM 023608102 2,341,872 0 0.00 101,239 2.27 0.0994
2015-11-06 2015-09-30 13F AMEREN COM 023608102 2,341,872 984,497 72.53 98,991 93.55 0.1053
2015-08-03 2015-06-30 13F AMEREN COM 023608102 1,357,375 -399,080 -22.72 51,146 -31.00 0.0469
2015-06-25 2015-03-31 13F/A-1 AMEREN COM 023608102 1,756,455 -736,413 -29.54 74,122 -35.54 0.0679
2015-05-04 2015-03-31 13F AMEREN COM 023608102 1,756,455 74,122
2015-06-25 2014-12-31 13F/A-1 AMEREN COM 023608102 2,492,868 839,960 50.82 114,996 81.51 0.1075
2015-02-06 2014-12-31 13F AMEREN COM 023608102 2,492,868 839,960 114,996 0.1075
2014-11-12 2014-09-30 13F/A-1 AMEREN COM 023608102 1,652,908 0 0.00 63,356 -6.24 0.0588
2014-11-05 2014-09-30 13F AMEREN COM 023608102 1,652,908 0 63,356 0.0604
2014-08-08 2014-06-30 13F AMEREN COM 023608102 1,652,908 0 0.00 67,571 -0.78 0.0621
2014-05-07 2014-03-31 13F AMEREN COM 023608102 1,652,908 383,070 30.17 68,100 48.31 0.0651
2014-02-10 2013-12-31 13F AMEREN COM 023608102 1,269,838 403,156 46.52 45,917 52.07 0.0450
2013-11-13 2013-09-30 13F AMEREN COM 023608102 866,682 0 0.00 30,195 1.16 0.0317
2013-08-05 2013-06-30 13F AMEREN COM 023608102 866,682 866,682 29,849 0.0336
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.