Ameren Corporation
US ˙ NYSE ˙ US0236081024

SecurityAEE / Ameren Corporation
InstitutionCerity Partners LLC
Latest Disclosed Ownership46,738 shares
Latest Disclosed Value $ 5,140,367
Cerity Partners LLC reports 94.04% increase in ownership of AEE / Ameren Corporation

On May 15, 2026 - Cerity Partners LLC filed a 13F-HR form disclosing ownership of 46,738 shares of Ameren Corporation (US:AEE) valued at $5,137,441 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 24,087 shares of Ameren Corporation. This represents a change in shares of 94.04% during the quarter. The current value of the position is $4,964,978 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 46,738 22,651 94.04 5,140 113.72 0.0036
2026-02-11 2025-12-31 13F AMEREN COM 023608102 24,087 -318 -1.30 2,405 -5.58 0.0035
2025-10-22 2025-09-30 13F AMEREN COM 023608102 24,405 1,325 5.74 2,547 14.94 0.0041
2025-08-13 2025-06-30 13F AMEREN Stock 023608102 23,080 -4,355 -15.87 2,217 -19.54 0.0040
2025-04-30 2025-03-31 13F AMEREN Stock 023608102 27,435 4,292 18.55 2,755 34.67 0.0056
2025-02-13 2024-12-31 13F AMEREN COM 023608102 23,143 1,295 5.93 2,046 7.07 0.0044
2024-11-12 2024-09-30 13F AMEREN Stock 023608102 21,848 11,802 117.48 1,911 167.51 0.0042
2024-08-13 2024-06-30 13F AMEREN COM 023608102 10,046 -4,053 -28.75 714 -31.48 0.0019
2024-05-14 2024-03-31 13F AMEREN Equities 023608102 14,099 4,409 45.50 1,043 48.64 0.0028
2024-01-26 2023-12-31 13F AMEREN Equity 023608102 9,690 5,417 126.77 701 119.75 0.0023
2023-11-14 2023-09-30 13F AMEREN Equities 023608102 4,273 -8,769 -67.24 320 -70.05 0.0016
2023-08-14 2023-06-30 13F AMEREN Stock 023608102 13,042 3,413 35.45 1,065 28.00 0.0041
2023-05-11 2023-03-31 13F AMEREN COM 023608102 9,629 1,152 13.59 832 10.49 0.0020
2023-02-15 2022-12-31 13F AMEREN Stock 023608102 8,477 -4,370 -34.02 754 -27.25 0.0048
2022-11-14 2022-09-30 13F AMEREN Equities 023608102 12,847 -85 -0.66 1,035 -11.39 0.0124
2022-08-10 2022-06-30 13F AMEREN COM 023608102 12,932 341 2.71 1,168 -1.02 0.0129
2022-04-25 2022-03-31 13F AMEREN Stock 023608102 12,591 8,647 219.24 1,180 235.23 0.0183
2022-02-14 2021-12-31 13F AMEREN Stock 023608102 3,944 3,944 352 0.0054
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.