American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionNational Pension Service
Latest Disclosed Ownership1,949,424 shares
Latest Disclosed Value $ 255,530,498
National Pension Service reports 0.29% increase in ownership of AEP / American Electric Power Company, Inc.

On May 12, 2026 - National Pension Service filed a 13F-HR form disclosing ownership of 1,949,424 shares of American Electric Power Company, Inc. (MX:AEP) valued at $255,530,498 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,943,852 shares of American Electric Power Company, Inc.. This represents a change in shares of 0.29% 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)
2026-05-12 2026-03-31 13F AMERICAN ELEC PWR COM 025537101 1,949,424 5,572 0.29 255,530 14.00 0.1941
2026-02-10 2025-12-31 13F AMERICAN ELEC PWR AMERICAN ELEC PWR CO INC 025537101 1,943,852 24,410 1.27 224,146 3.80 0.1660
2025-11-04 2025-09-30 13F AMERICAN ELEC PWR COM 025537101 1,919,442 24,862 1.31 215,937 9.85 0.1677
2025-08-08 2025-06-30 13F AMERICAN ELEC PWR COM 025537101 1,894,580 352,198 22.83 196,582 16.64 0.1697
2025-05-13 2025-03-31 13F AMERICAN ELEC PWR COM 025537101 1,542,382 106,418 7.41 168,536 27.26 0.1620
2025-02-05 2024-12-31 13F AMERICAN ELEC PWR COM 025537101 1,435,964 -97,292 -6.35 132,439 -15.81 0.1253
2024-10-30 2024-09-30 13F AMERICANELECPWRCOINC COM 025537101 1,533,256 152,381 11.04 157,312 29.84 0.1517
2024-08-13 2024-06-30 13F AMERICAN ELEC PWR COM 025537101 1,380,875 37,573 2.80 121,158 4.75 0.1392
2024-05-14 2024-03-31 13F AMERICAN ELEC PWR COM 025537101 1,343,302 37,823 2.90 115,658 9.08 0.1388
2024-02-07 2023-12-31 13F AMERICAN ELEC PWR COM 025537101 1,305,479 44,884 3.56 106,031 10.18 0.1477
2023-11-15 2023-09-30 13F AMERICAN ELEC PWR COM 025537101 1,260,595 68,793 5.77 96,234 -3.02 0.1540
2023-08-16 2023-06-30 13F AMERICAN ELEC PWR COM 025537101 1,191,802 183,680 18.22 99,229 8.85 0.1601
2023-05-12 2023-03-31 13F AMERICAN ELEC PWR COM 025537101 1,008,122 124,435 14.08 91,164 8.65 0.1660
2023-02-24 2022-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 883,687 33,533 3.94 83,906 10.81 0.1650
2023-02-21 2022-12-31 13F AMERICAN ELEC PWR COM 025537101 883,687 33,533 84 0.1650
2023-02-24 2022-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 850,154 38,075 4.69 75,723 -2.81 0.1580
2022-11-18 2022-09-30 13F AMERICAN ELEC PWR COM 025537101 850,154 38,075 75,723 0.1580
2022-08-17 2022-06-30 13F AMERICAN ELEC PWR COM 025537101 812,079 76,234 10.36 77,911 6.12 0.1606
2022-05-13 2022-03-31 13F AMERICAN ELEC PWR COM 025537101 735,845 -114,577 -13.47 73,415 -2.97 0.1340
2022-02-15 2021-12-31 13F AMERICAN ELEC PWR COM 025537101 850,422 -19,610 -2.25 75,662 7.13 0.1320
2021-11-18 2021-09-30 13F AMERICAN ELEC PWR COM 025537101 870,032 16,408 1.92 70,629 -2.19 0.1345
2021-08-17 2021-06-30 13F AMERICAN ELEC PWR COM 025537101 853,624 12,497 1.49 72,208 1.35 0.1372
2021-05-14 2021-03-31 13F AMERICAN ELEC PWR COM 025537101 841,127 134,169 18.98 71,243 20.99 0.1490
2021-02-19 2020-12-31 13F AMERICAN ELEC PWR COM 025537101 706,958 29,797 4.40 58,883 7.82 0.1342
2020-11-13 2020-09-30 13F AMERICAN ELEC PWR COM 025537101 677,161 0 0.00 54,613 1.27 0.1434
2020-08-11 2020-06-30 13F AMERICAN ELEC PWR COM 025537101 677,161 79,318 13.27 53,929 12.79 0.1540
2020-05-27 2020-03-31 13F AMERICAN ELEC PWR COM 025537101 597,843 5,557 0.94 47,815 -14.58 0.1618
2020-02-21 2019-12-31 13F AMERICAN ELEC PWR COM 025537101 592,286 -150 -0.03 55,977 0.85 0.1536
2019-11-15 2019-09-30 13F AMERICAN ELEC PWR COM 025537101 592,436 28,300 5.02 55,505 11.79 0.1756
2019-08-14 2019-06-30 13F AMERICAN ELEC PWR COM 025537101 564,136 27,951 5.21 49,650 10.57 0.1659
2019-05-15 2019-03-31 13F AMERICAN ELEC PWR COM 025537101 536,185 19,902 3.85 44,905 9.61 0.1727
2019-02-15 2018-12-31 13F AMERICAN ELEC PWR COM 025537101 516,283 24,286 4.94 40,967 17.47 0.1690
2018-11-15 2018-09-30 13F AMERICAN ELEC PWR COM 025537101 491,997 -743 -0.15 34,873 2.07 0.1420
2018-08-14 2018-06-30 13F AMERICAN ELEC PWR COM 025537101 492,740 32,214 7.00 34,167 8.17 0.1546
2018-04-13 2018-03-31 13F AMERICAN ELEC PWR COM 025537101 460,526 12,309 2.75 31,587 -4.21 0.1566
2018-01-17 2017-12-31 13F AMERICAN ELEC PWR COM 025537101 448,217 9,116 2.08 32,975 6.52 0.1646
2017-10-16 2017-09-30 13F AMERICAN ELECTRIC POWER COM 025537101 439,101 17,638 4.18 30,957 5.53 0.1703
2017-07-13 2017-06-30 13F AMERICAN ELEC PWR COM 025537101 421,463 40,729 10.70 29,334 14.72 0.1747
2017-04-11 2017-03-31 13F AMERICAN ELEC PWR COM 025537101 380,734 16,491 4.53 25,570 11.50 0.1712
2017-01-18 2016-12-31 13F AMERICAN ELEC PWR COM 025537101 364,243 25,985 7.68 22,933 5.58 0.1569
2016-10-14 2016-09-30 13F AMERICAN ELEC PWR COM 025537101 338,258 26,744 8.59 21,720 -0.52 0.1741
2016-08-11 2016-06-30 13F AMERICAN ELEC PWR COM 025537101 311,514 25,086 8.76 21,834 14.80 0.1938
2016-05-16 2016-03-31 13F AMERICAN ELEC PWR COM 025537101 286,428 11,168 4.06 19,019 18.58 0.1905
2016-02-12 2015-12-31 13F AMERICAN ELEC PWR COM 025537101 275,260 16,268 6.28 16,039 8.92 0.1685
2015-10-15 2015-09-30 13F AMERICAN ELEC PWR COM 025537101 258,992 45,090 21.08 14,726 29.97 0.1862
2015-07-15 2015-06-30 13F AMERICAN ELEC PWR COM 025537101 213,902 28,991 15.68 11,330 8.93 0.1470
2015-04-15 2015-03-31 13F AMERICAN ELEC PWR COM 025537101 184,911 21,705 13.30 10,401 4.95 0.1503
2015-01-13 2014-12-31 13F AMERICAN ELEC PWR COM 025537101 163,206 -20,915 -11.36 9,910 3.09 0.1672
2014-11-07 2014-09-30 13F AMERICAN ELEC PWR COM 025537101 184,121 184,121 9,613 0.1526
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.