CIBC Asset Management Inc reports 3.44% increase in ownership of AEE / Ameren Corporation

아메렌 코퍼레이션

MX ˙ BMV ˙ US0236081024

Security	MX:AEE / Ameren Corporation
Institution	CIBC Asset Management Inc
Latest Disclosed Ownership	172,510 shares
Latest Disclosed Value	$ 18,962,299

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 172,510 shares of Ameren Corporation (MX:AEE) valued at $18,962,299 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 166,768 shares of Ameren Corporation. This represents a change in shares of 3.44% 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-12	2026-03-31	13F	AMEREN	COM	023608102	172,510	5,742	3.44	18,962	13.87	0.0463
2026-02-10	2025-12-31	13F	AMEREN	COM	023608102	166,768	25,626	18.16	16,653	13.04	0.0402
2025-10-31	2025-09-30	13F	AMEREN	COM	023608102	141,142	2,712	1.96	14,732	10.82	0.0427
2025-08-14	2025-06-30	13F	AMEREN	COM	023608102	138,430	25,319	22.38	13,295	17.07	0.0411
2025-05-13	2025-03-31	13F	AMEREN	COM	023608102	113,111	66,511	142.73	11,356	173.44	0.0377
2025-01-31	2024-12-31	13F	AMEREN	COM	023608102	46,600	1,184	2.61	4,154	4.56	0.0136
2024-11-06	2024-09-30	13F	AMEREN	COM	023608102	45,416	2,957	6.96	3,972	31.57	0.0129
2024-08-01	2024-06-30	13F	AMEREN	COM	023608102	42,459	-1,771	-4.00	3,019	-7.70	0.0107
2024-05-09	2024-03-31	13F	AMEREN	COM	023608102	44,230	924	2.13	3,271	4.44	0.0113
2024-02-13	2023-12-31	13F	AMEREN	COM	023608102	43,306	-53,146	-55.10	3,133	-56.60	0.0117
2023-10-30	2023-09-30	13F	AMEREN	COM	023608102	96,452	-1,292	-1.32	7,218	-9.58	0.0299
2023-08-14	2023-06-30	13F	AMEREN	COM	023608102	97,744	-1,525	-1.54	7,983	-6.92	0.0306
2023-05-12	2023-03-31	13F	AMEREN	COM	023608102	99,269	298	0.30	8,576	-2.56	0.0340
2023-02-13	2022-12-31	13F	AMEREN	COM	023608102	98,971	-12,893	-11.53	8,801	-2.34	0.0369
2022-11-03	2022-09-30	13F	AMEREN	COM	023608102	111,864	80,239	253.72	9,011	215.29	0.0395
2022-08-09	2022-06-30	13F	AMEREN	COM	023608102	31,625	6,801	27.40	2,858	22.82	0.0116
2022-05-06	2022-03-31	13F	AMEREN	COM	023608102	24,824	234	0.95	2,327	6.30	0.0082
2022-02-08	2021-12-31	13F	AMEREN	COM	023608102	24,590	1,445	6.24	2,189	16.75	0.0080
2021-11-09	2021-09-30	13F	AMEREN	COM	023608102	23,145	1,058	4.79	1,875	6.05	0.0076
2021-08-16	2021-06-30	13F	AMEREN	COM	023608102	22,087	602	2.80	1,768	1.14	0.0071
2021-05-14	2021-03-31	13F	AMEREN	COM	023608102	21,485	-261	-1.20	1,748	3.01	0.0074
2021-02-03	2020-12-31	13F	AMEREN	COM	023608102	21,746	-33	-0.15	1,697	-1.45	0.0080
2020-11-05	2020-09-30	13F	AMEREN	COM	023608102	21,779	394	1.84	1,722	14.42	0.0088
2020-07-28	2020-06-30	13F	AMEREN	COM	023608102	21,385	-82,279	-79.37	1,505	-80.07	0.0088
2020-04-30	2020-03-31	13F	AMEREN	COM	023608102	103,664	69,470	203.16	7,550	187.51	0.0534
2020-02-14	2019-12-31	13F	AMEREN	COM	023608102	34,194	3,868	12.75	2,626	8.15	0.0148
2019-10-30	2019-09-30	13F	AMEREN	COM	023608102	30,326	4,376	16.86	2,428	24.58	0.0143
2019-08-05	2019-06-30	13F	AMEREN	COM	023608102	25,950	-569	-2.15	1,949	-0.05	0.0117
2019-05-06	2019-03-31	13F	AMEREN	COM	023608102	26,519	1,315	5.22	1,950	18.61	0.0121
2019-02-12	2018-12-31	13F	AMEREN	COM	023608102	25,204	-416	-1.62	1,644	1.48	0.0121
2018-11-02	2018-09-30	13F	AMEREN	COM	023608102	25,620	431	1.71	1,620	5.68	0.0100
2018-08-09	2018-06-30	13F	AMEREN	COM	023608102	25,189	963	3.98	1,533	11.73	0.0096
2018-04-30	2018-03-31	13F	AMEREN	COM	023608102	24,226	-1,199	-4.72	1,372	-8.53	0.0089
2018-02-02	2017-12-31	13F	AMEREN	COM	023608102	25,425	1,211	5.00	1,500	7.07	0.0092
2017-11-06	2017-09-30	13F	AMEREN	COM	023608102	24,214	409	1.72	1,401	7.69	0.0088
2017-07-27	2017-06-30	13F	AMEREN	COM	023608102	23,805	85	0.36	1,301	0.46	0.0090
2017-05-12	2017-03-31	13F	AMEREN	COM	023608102	23,720	-412	-1.71	1,295	2.29	0.0089
2017-02-08	2016-12-31	13F	AMEREN	COM	023608102	24,132	128	0.53	1,266	7.20	0.0091
2016-10-19	2016-09-30	13F	AMEREN	COM	023608102	24,004	-1,850	-7.16	1,181	-14.73	0.0087
2016-08-02	2016-06-30	13F	AMEREN	COM	023608102	25,854	386	1.52	1,385	8.54	0.0104
2016-05-09	2016-03-31	13F	AMEREN	COM	023608102	25,468	301	1.20	1,276	17.28	0.0096
2016-02-02	2015-12-31	13F	AMEREN	COM	023608102	25,167	1,059	4.39	1,088	6.77	0.0090
2015-11-03	2015-09-30	13F	AMEREN	COM	023608102	24,108	246	1.03	1,019	13.35	0.0081
2015-08-06	2015-06-30	13F	AMEREN	COM	023608102	23,862	1,821	8.26	899	-3.33	0.0063
2015-05-08	2015-03-31	13F	AMEREN	COM	023608102	22,041	728	3.42	930	-5.39	0.0066
2015-02-10	2014-12-31	13F	AMEREN	COM	023608102	21,313	-7,393	-25.75	983	-10.64	0.0066
2014-11-05	2014-09-30	13F	AMEREN	COM	023608102	28,706	-115	-0.40	1,100	-6.62	0.0066
2014-08-01	2014-06-30	13F	AMEREN	COM	023608102	28,821	-1,056	-3.53	1,178	-4.31	0.0067
2014-05-09	2014-03-31	13F	AMEREN	COM	023608102	29,877	1,472	5.18	1,231	19.86	0.0073
2014-02-04	2013-12-31	13F	AMEREN	COM	023608102	28,405	-336	-1.17	1,027	2.60	0.0063
2013-10-29	2013-09-30	13F	AMEREN	COM	023608102	28,741	12	0.04	1,001	1.21	0.0064
2013-10-02	2013-06-30	13F/A-1	AMEREN	COM	023608102	28,729	28,729		989		0.0067
2013-08-09	2013-06-30	13F	AMEREN	COM	023608102	28,729			989		0.0067

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.