Ameren Corporation
US ˙ NYSE ˙ US0236081024

SecurityAEE / Ameren Corporation
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership1,331,922 shares
Latest Disclosed Value $ 146,404,866
Lazard Asset Management Llc reports 42.91% increase in ownership of AEE / Ameren Corporation

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 1,331,922 shares of Ameren Corporation (US:AEE) valued at $146,404,866 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 932,017 shares of Ameren Corporation. This represents a change in shares of 42.91% during the quarter. The current value of the position is $145,539,117 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 1,331,922 399,905 42.91 146,405 57.30 0.2409
2026-02-17 2025-12-31 13F AMEREN COM 023608102 932,017 916,865 6,051.12 93,071 5,786.84 0.1577
2025-11-14 2025-09-30 13F AMEREN COM 023608102 15,152 -39,581 -72.32 1,582 31,520.00 0.0021
2025-08-14 2025-06-30 13F AMEREN Common Stock 023608102 54,733 17,609 47.43 5 66.67 0.0072
2025-05-15 2025-03-31 13F AMEREN Common Stock 023608102 37,124 35,559 2,272.14 4 0.0057
2025-02-14 2024-12-31 13F AMEREN Common Stock 023608102 1,565 -37,960 -96.04 0 -100.00 0.0002
2024-11-14 2024-09-30 13F AMEREN Common Stock 023608102 39,525 -52,351 -56.98 3 -50.00 0.0046
2024-08-14 2024-06-30 13F AMEREN Common Stock 023608102 91,876 48,533 111.97 7 100.00 0.0082
2024-07-09 2024-03-31 13F/A-1 AMEREN Common Stock 023608102 43,343 -50,609 -53.87 3 -50.00 0.0039
2024-05-14 2024-03-31 13F AMEREN Common Stock 023608102 43,343 -50,609 3 0.0039
2024-02-14 2023-12-31 13F AMEREN Common Stock 023608102 93,952 50,173 114.61 7 100.00 0.0086
2023-11-14 2023-09-30 13F AMEREN Common Stock 023608102 43,779 -18,383 -29.57 3 -40.00 0.0045
2023-08-15 2023-06-30 13F AMEREN Common Stock 023608102 62,162 -47,106 -43.11 5 -44.44 0.0062
2023-05-15 2023-03-31 13F AMEREN Common Stock 023608102 109,268 30,197 38.19 9 -99.87 0.0124
2023-02-15 2022-12-31 13F AMEREN Common Stock 023608102 79,071 -13,863 -14.92 7,029 -6.09 0.0097
2022-11-14 2022-09-30 13F AMEREN Common Stock 023608102 92,934 -1,710,558 -94.85 7,485 -95.41 0.0109
2022-08-09 2022-06-30 13F AMEREN Common Stock 023608102 1,803,492 -1,766,893 -49.49 162,962 -51.32 0.2204
2022-05-13 2022-03-31 13F AMEREN Common Stock 023608102 3,570,385 -111,663 -3.03 334,758 2.14 0.3879
2022-02-09 2021-12-31 13F AMEREN Common Stock 023608102 3,682,048 72,865 2.02 327,738 12.11 0.3487
2021-11-15 2021-09-30 13F AMEREN Common Stock 023608102 3,609,183 -336,423 -8.53 292,342 -7.43 0.3299
2021-08-12 2021-06-30 13F AMEREN Common Stock 023608102 3,945,606 -19,915 -0.50 315,806 -2.12 0.3544
2021-05-14 2021-03-31 13F AMEREN Common Stock 023608102 3,965,521 3,946,040 20,255.84 322,634 21,125.92 0.3908
2021-02-11 2020-12-31 13F AMEREN Common Stock 023608102 19,481 -15,933 -44.99 1,520 -45.71 0.0019
2020-11-13 2020-09-30 13F AMEREN Common Stock 023608102 35,414 -1,484 -4.02 2,800 7.90 0.0039
2020-08-13 2020-06-30 13F AMEREN Common Stock 023608102 36,898 -101,596 -73.36 2,595 -74.27 0.0040
2020-05-14 2020-03-31 13F AMEREN Common Stock 023608102 138,494 -9,029 -6.12 10,086 -10.97 0.0185
2020-02-13 2019-12-31 13F AMEREN Common Stock 023608102 147,523 63,246 75.05 11,329 67.96 0.0162
2019-11-14 2019-09-30 13F AMEREN Common Stock 023608102 84,277 -18,377 -17.90 6,745 -12.50 0.0111
2019-08-14 2019-06-30 13F AMEREN Common Stock 023608102 102,654 -36,259 -26.10 7,709 -24.55 0.0125
2019-08-28 2019-03-31 13F/A-1 AMEREN Common Stock 023608102 138,913 -37,267 -21.15 10,217 -11.09 0.0167
2019-05-13 2019-03-31 13F AMEREN Common Stock 023608102 138,913 -37,267 10,217
2019-08-28 2018-12-31 13F/A-1 AMEREN Common Stock 023608102 176,180 -117,304 -39.97 11,492 -38.06 0.0212
2019-02-13 2018-12-31 13F AMEREN Common Stock 023608102 176,180 -117,304 11,492
2019-08-30 2018-09-30 13F/A-1 AMEREN Common Stock 023608102 293,484 -47,259 -13.87 18,553 -10.52 0.0300
2018-11-13 2018-09-30 13F AMEREN Common Stock 023608102 293,484 -47,259 18,553
2019-08-30 2018-06-30 13F/A-1 AMEREN Common Stock 023608102 340,743 -164,505 -32.56 20,734 -27.53 0.0360
2018-08-13 2018-06-30 13F AMEREN Common Stock 023608102 340,743 -164,505 20,734
2019-08-28 2018-03-31 13F/A-1 AMEREN Common Stock 023608102 505,248 -743,180 -59.53 28,611 -61.15 0.0488
2018-05-14 2018-03-31 13F AMEREN Common Stock 023608102 505,248 -742,320 28,611
2019-08-28 2017-12-31 13F/A-1 AMEREN Common Stock 023608102 1,248,428 -54,420 -4.18 73,643 -2.27 0.1260
2018-02-13 2017-12-31 13F AMEREN Common Stock 023608102 1,247,568 -55,280 73,592
2019-08-19 2017-09-30 13F/A-1 AMEREN Common Stock 023608102 1,302,848 -1,442,080 -52.54 75,355 -49.78 0.1363
2017-11-13 2017-09-30 13F AMEREN Common Stock 023608102 1,302,848 -1,394,327 75,355
2019-08-19 2017-06-30 13F/A-1 AMEREN Common Stock 023608102 2,744,928 -2,488,816 -47.55 150,063 -47.48 0.2822
2017-08-11 2017-06-30 13F AMEREN Common Stock 023608102 2,697,175 -2,536,569 147,453
2019-08-13 2017-03-31 13F/A-1 AMEREN Common Stock 023608102 5,233,744 593,693 12.79 285,709 17.37 0.5392
2017-05-12 2017-03-31 13F AMEREN Common Stock 023608102 5,234,226 595,665 285,735
2019-07-30 2016-12-31 13F/A-1 AMEREN Common Stock 023608102 4,640,051 165,993 3.71 243,416 10.63 0.4965
2017-02-13 2016-12-31 13F AMEREN Common Stock 023608102 4,638,561 164,527 243,338
2019-08-07 2016-09-30 13F/A-1 AMEREN Common Stock 023608102 4,474,058 189,700 4.43 220,033 -4.15 0.4372
2016-11-14 2016-09-30 13F AMEREN Common Stock 023608102 4,474,034 189,700 220,032
2019-07-29 2016-06-30 13F/A-1 AMEREN Common Stock 023608102 4,284,358 -313,212 -6.81 229,555 -0.34 0.4843
2016-08-15 2016-06-30 13F AMEREN Common Stock 023608102 4,284,334 -313,236 229,554
2019-07-25 2016-03-31 13F/A-1 AMEREN Common Stock 023608102 4,597,570 281,421 6.52 230,337 23.45 0.5024
2016-05-12 2016-03-31 13F AMEREN Common Stock 023608102 4,597,521 281,372 230,335
2019-07-24 2015-12-31 13F/A-1 AMEREN Common Stock 023608102 4,316,149 -2,017,893 -31.86 186,586 -30.31 0.4270
2016-02-12 2015-12-31 13F AMEREN Common Stock 023608102 4,316,149 -2,017,893 186,586
2019-07-15 2015-09-30 13F/A-1 AMEREN Common Stock 023608102 6,334,042 -65,200 -1.02 267,739 11.04 0.6401
2015-11-13 2015-09-30 13F AMEREN Common Stock 023608102 6,334,042 -65,200 267,739
2019-07-08 2015-06-30 13F/A-1 AMEREN Common Stock 023608102 6,399,242 2,027,200 46.37 241,123 30.69 0.5055
2015-08-13 2015-06-30 13F AMEREN Common Stock 023608102 6,399,242 2,027,200 241,123
2015-06-09 2015-03-31 13F/A-1 AMEREN Common Stock 023608102 4,372,042 2,627,790 150.65 184,500 129.30 0.3976
2015-05-15 2015-03-31 13F AMEREN Common Stock 023608102 4,372,042 184,500
2019-08-29 2014-12-31 13F/A-3 AMEREN Common Stock 023608102 1,744,252 22,507 1.31 80,462 21.92 0.1718
2015-05-20 2014-12-31 13F/A-1 AMEREN Common Stock 023608102 1,744,252 0 80,462 0.1549
2015-06-09 2014-12-31 13F/A-2 AMEREN Common Stock 023608102 1,744,252 0 80,462 0.1836
2014-11-07 2014-09-30 13F AMEREN Common Stock 023608102 1,721,745 669,822 63.68 65,994 53.47 0.1417
2014-08-12 2014-06-30 13F AMEREN Common Stock 023608102 1,051,923 1,051,923 43,002 0.0899
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.