American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionSumitomo Mitsui Trust Holdings, Inc.
Latest Disclosed Ownership1,366,768 shares
Latest Disclosed Value $ 179,155,949
Sumitomo Mitsui Trust Holdings, Inc. reports 4.09% decrease in ownership of AEP / American Electric Power Company, Inc.

On April 30, 2026 - Sumitomo Mitsui Trust Holdings, Inc. filed a 13F-HR form disclosing ownership of 1,366,768 shares of American Electric Power Company, Inc. (MX:AEP) valued at $179,155,949 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,425,100 shares of American Electric Power Company, Inc.. This represents a change in shares of -4.09% 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)
2026-04-30 2026-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,366,768 -58,332 -4.09 179,156 9.02 0.1160
2026-01-23 2025-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,425,100 -33,841 -2.32 164,328 0.12 0.0965
2025-10-27 2025-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,458,941 76,620 5.54 164,131 14.43 0.0944
2025-07-31 2025-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,382,321 36,339 2.70 143,430 -2.48 0.0894
2025-04-25 2025-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,345,982 23,778 1.80 147,075 20.61 0.1040
2025-01-28 2024-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,322,204 5,552 0.42 121,947 -9.73 0.0823
2024-11-05 2024-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,316,652 36,423 2.85 135,088 20.26 0.0936
2024-07-19 2024-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,280,229 -109,020 -7.85 112,327 -6.09 0.0829
2024-04-19 2024-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,389,249 22,048 1.61 119,614 7.72 0.0821
2024-01-30 2023-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,367,201 11,593 0.86 111,044 8.90 0.0821
2023-10-30 2023-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,355,608 -30,286 -2.19 101,969 -12.62 0.0837
2023-07-31 2023-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,385,894 -296,977 -17.65 116,692 -23.79 0.0909
2023-04-27 2023-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,682,871 -1,528 -0.09 153,124 -4.26 0.1141
2023-01-30 2022-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,684,399 -14,210 -0.84 159,934 8.91 0.1266
2022-10-21 2022-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,698,609 15,755 0.94 146,845 -9.05 0.1207
2022-07-26 2022-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,682,854 79,895 4.98 161,453 0.95 0.1242
2022-04-27 2022-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,602,959 92,629 6.13 159,927 19.02 0.1065
2022-02-02 2021-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,510,330 -48,159 -3.09 134,374 6.21 0.0817
2021-10-25 2021-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,558,489 -235,285 -13.12 126,518 -16.62 0.0788
2021-08-02 2021-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,793,774 62,960 3.64 151,735 3.50 0.0897
2021-04-30 2021-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,730,814 -39,171 -2.21 146,600 -0.53 0.0916
2021-02-05 2020-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,769,985 -219,581 -11.04 147,387 -9.36 0.0952
2020-10-30 2020-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,989,566 -125,565 -5.94 162,607 -3.47 0.1095
2020-07-27 2020-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 2,115,131 -40,425 -1.88 168,449 -2.29 0.1190
2020-04-27 2020-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 2,155,556 119,475 5.87 172,401 -10.41 0.1482
2020-01-31 2019-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 2,036,081 30,436 1.52 192,430 2.41 0.1513
2019-10-31 2019-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 2,005,645 -86,626 -4.14 187,909 2.05 0.1632
2019-07-29 2019-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 2,092,271 -14,659 -0.70 184,141 4.36 0.1644
2019-05-08 2019-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 2,106,930 131,313 6.65 176,455 19.52 0.1632
2019-02-06 2018-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,975,617 311,979 18.75 147,638 25.20 0.1588
2018-11-07 2018-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,663,638 58,237 3.63 117,919 6.07 0.1268
2018-08-01 2018-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,605,401 80,897 5.31 111,174 6.32 0.1296
2018-05-01 2018-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,524,504 27,263 1.82 104,566 -5.07 0.1345
2018-02-06 2017-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,497,241 97,360 6.95 110,152 12.03 0.1422
2017-11-07 2017-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,399,881 -15,960 -1.13 98,328 -0.03 0.1388
2017-08-07 2017-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,415,841 36,194 2.62 98,358 6.20 0.1443
2017-05-02 2017-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,379,647 -94,759 -6.43 92,616 -0.23 0.1431
2017-01-27 2016-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,474,406 -117,398 -7.38 92,829 -9.18 0.1515
2016-10-28 2016-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,591,804 1,430 0.09 102,210 -8.31 0.1676
2016-07-29 2016-06-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,590,374 16,628 1.06 111,469 6.67 0.1920
2016-05-06 2016-03-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,573,746 42,998 2.81 104,497 15.90 0.1828
2016-02-09 2015-12-31 13F AMERICAN ELECTRIC POWER COM 025537101 1,530,748 193,126 14.44 90,161 18.54 0.1612
2015-11-06 2015-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 1,337,622 28,066 2.14 76,057 9.64 0.1472
2015-07-31 2015-06-30 13F American Electric Power COM 025537101 1,309,556 12,615 0.97 69,367 -4.92 0.1246
2015-05-08 2015-03-31 13F American Electric Power COM 025537101 1,296,941 1,296,941 0.00 72,953 0.1317
2015-02-04 2014-12-31 13F American Electric Power COM 025537101 0 -1,297,660 -100.00 0 -100.00
2014-11-07 2014-09-30 13F American Electric Power COM 025537101 1,297,660 11,671 0.91 67,751 -5.53 0.1358
2014-08-11 2014-06-30 13F American Electric Power COM 025537101 1,285,989 -135,220 -9.51 71,720 -0.39 0.1472
2014-05-09 2014-03-31 13F American Electric Power COM 025537101 1,421,209 138,736 10.82 71,998 20.37 0.1515
2014-02-14 2013-12-31 13F American Electric Power COM 025537101 1,282,473 -37,986 -2.88 59,815 4.49 0.1242
2013-11-07 2013-09-30 13F American Electric Power COM 025537101 1,320,459 -20,145 -1.50 57,242 -4.65 0.1238
2013-08-12 2013-06-30 13F American Electric Power COM 025537101 1,340,604 1,340,604 60,032 0.1363
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.