American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,793,510 shares
Latest Disclosed Value $ 235,094,315
Dimensional Fund Advisors Lp reports 1.70% increase in ownership of AEP / American Electric Power Company, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,793,510 shares of American Electric Power Company, Inc. (MX:AEP) valued at $235,094,315 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,763,546 shares of American Electric Power Company, Inc.. This represents a change in shares of 1.70% 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)
2026-05-07 2026-03-31 13F AMERICAN ELEC PWR COM 025537101 1,793,510 29,964 1.70 235,094 15.60 0.0105
2026-02-12 2025-12-31 13F AMERICAN ELEC PWR COM 025537101 1,763,546 50,312 2.94 203,366 5.54 0.0427
2025-11-12 2025-09-30 13F AMERICAN ELEC PWR COM 025537101 1,713,234 38,758 2.31 192,696 10.92 0.0414
2025-08-12 2025-06-30 13F AMERICAN ELEC PWR COM 025537101 1,674,476 14,440 0.87 173,726 -4.21 0.0402
2025-05-13 2025-03-31 13F AMERICAN ELEC PWR COM 025537101 1,660,036 44,106 2.73 181,367 21.69 0.0451
2025-02-13 2024-12-31 13F AMERICAN ELEC PWR COM 025537101 1,615,930 91,244 5.98 149,035 -4.72 0.0358
2024-11-07 2024-09-30 13F AMERICAN ELEC PWR COM 025537101 1,524,686 64,838 4.44 156,423 22.12 0.0379
2024-08-09 2024-06-30 13F AMERICAN ELEC PWR COM 025537101 1,459,848 141,556 10.74 128,094 12.85 0.0335
2024-05-10 2024-03-31 13F AMERICAN ELEC PWR COM 025537101 1,318,292 203,363 18.24 113,505 25.34 0.0307
2024-02-07 2023-12-31 13F AMERICAN ELEC PWR COM 025537101 1,114,929 62,141 5.90 90,556 14.36 0.0264
2023-11-09 2023-09-30 13F AMERICAN ELEC PWR COM 025537101 1,052,788 78,136 8.02 79,186 -3.50 0.0260
2023-08-09 2023-06-30 13F AMERICAN ELEC PWR COM 025537101 974,652 46,716 5.03 82,058 -2.81 0.0262
2023-05-12 2023-03-31 13F AMERICAN ELEC PWR COM 025537101 927,936 -4,183 -0.45 84,428 95,840.91 0.0284
2023-02-09 2022-12-31 13F AMERICAN ELEC PWR COM 025537101 932,119 -32,433 -3.36 89 -99.89 0.0262
2022-11-10 2022-09-30 13F AMERICAN ELEC PWR COM 025537101 964,552 634 0.07 83,412 -9.79 0.0320
2022-08-12 2022-06-30 13F AMERICAN ELEC PWR COM 025537101 963,918 20,700 2.19 92,469 -1.74 0.0332
2022-05-13 2022-03-31 13F AMERICAN ELEC PWR COM 025537101 943,218 -8,632 -0.91 94,102 11.12 0.0290
2022-02-09 2021-12-31 13F AMERICAN ELEC PWR COM 025537101 951,850 22,729 2.45 84,683 12.26 0.0256
2021-11-12 2021-09-30 13F AMERICAN ELEC PWR COM 025537101 929,121 -7,103 -0.76 75,436 -4.74 0.0243
2021-08-12 2021-06-30 13F AMERICAN ELEC PWR COM 025537101 936,224 17,791 1.94 79,188 1.79 0.0251
2021-05-14 2021-03-31 13F AMERICAN ELEC PWR COM 025537101 918,433 -15,390 -1.65 77,792 0.06 0.0257
2021-03-08 2020-12-31 13F/A-2 AMERICAN ELEC PWR COM 025537101 933,823 2,086 0.22 77,742 2.11 0.0281
2021-02-11 2020-12-31 13F AMERICAN ELEC PWR COM 025537101 933,823 2,086 77,742 28,076.2782
2020-11-12 2020-09-30 13F AMERICAN ELEC PWR COM 025537101 931,737 6,692 0.72 76,139 3.35 0.0323
2020-08-13 2020-06-30 13F AMERICAN ELEC PWR COM 025537101 925,045 9,317 1.02 73,669 0.52 0.0324
2020-05-14 2020-03-31 13F AMERICAN ELEC PWR COM 025537101 915,728 -24,034 -2.56 73,288 -17.48 0.0382
2020-02-14 2019-12-31 13F AMERICAN ELEC PWR COM 025537101 939,762 -7,361 -0.78 88,811 0.08 0.0324
2019-11-12 2019-09-30 13F AMERICAN ELEC PWR COM 025537101 947,123 1,619 0.17 88,742 6.65 0.0345
2019-08-13 2019-06-30 13F AMERICAN ELEC PWR COM 025537101 945,504 15,622 1.68 83,212 6.85 0.0323
2019-08-12 2019-03-31 13F/A-2 AMERICAN ELEC PWR COM 025537101 929,882 -24,514 -2.57 77,878 9.18 0.0310
2019-05-10 2019-03-31 13F AMERICAN ELEC PWR COM 025537101 929,882 -24,514 77,878
2019-02-26 2018-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 954,396 58,389 6.52 71,331 12.34 0.0323
2019-02-13 2018-12-31 13F AMERICAN ELEC PWR COM 025537101 954,396 58,389 71,331
2018-11-13 2018-09-30 13F AMERICAN ELEC PWR COM 025537101 896,007 5,470 0.61 63,497 2.96 0.0242
2018-08-10 2018-06-30 13F AMERICAN ELEC PWR COM 025537101 890,537 5,871 0.66 61,671 1.63 0.0246
2018-05-11 2018-03-31 13F AMERICAN ELEC PWR COM 025537101 884,666 4,449 0.51 60,680 -6.30 0.0253
2018-02-12 2017-12-31 13F AMERICAN ELEC PWR COM 025537101 880,217 709 0.08 64,759 4.82 0.0268
2017-11-13 2017-09-30 13F AMERICAN ELEC PWR COM 025537101 879,508 3,088 0.35 61,779 1.47 0.0270
2017-08-11 2017-06-30 13F AMERICAN ELEC PWR COM 025537101 876,420 13,049 1.51 60,886 5.05 0.0281
2017-05-12 2017-03-31 13F AMERICAN ELEC PWR COM 025537101 863,371 36,160 4.37 57,958 11.28 0.0277
2017-02-09 2016-12-31 13F AMERICAN ELEC PWR COM 025537101 827,211 18,411 2.28 52,084 0.28 0.0260
2016-11-10 2016-09-30 13F AMERICAN ELEC PWR COM 025537101 808,800 57,997 7.72 51,936 -1.29 0.0281
2016-08-09 2016-06-30 13F AMERICAN ELEC PWR COM 025537101 750,803 23,809 3.27 52,614 9.00 0.0303
2016-05-13 2016-03-31 13F AMERICAN ELEC PWR COM 025537101 726,994 25,443 3.63 48,269 18.06 0.0289
2016-02-10 2015-12-31 13F AMERICAN ELEC PWR COM 025537101 701,551 47,712 7.30 40,884 9.98 0.0255
2015-11-13 2015-09-30 13F AMERICAN ELEC PWR COM 025537101 653,839 19,783 3.12 37,174 10.68 0.0244
2015-08-14 2015-06-30 13F AMERICAN ELEC PWR COM 025537101 634,056 61,509 10.74 33,586 4.28 0.0206
2015-05-14 2015-03-31 13F AMERICAN ELEC PWR COM 025537101 572,547 49,036 9.37 32,207 1.30 0.0203
2015-02-06 2014-12-31 13F AMERICAN ELEC PWR COM 025537101 523,511 11,140 2.17 31,795 18.86 0.0209
2014-11-13 2014-09-30 13F AMERICAN ELEC PWR COM 025537101 512,371 -6,267 -1.21 26,751 -7.50 0.0190
2014-08-08 2014-06-30 13F AMERICAN ELEC PWR COM 025537101 518,638 10,427 2.05 28,921 12.36 0.0201
2014-05-14 2014-03-31 13F AMERICAN ELEC PWR COM 025537101 508,211 7,091 1.42 25,740 9.90 0.0192
2014-02-12 2013-12-31 13F AMERICAN ELEC PWR COM 025537101 501,120 26,790 5.65 23,422 13.91 0.0183
2013-11-13 2013-09-30 13F AMERICAN ELEC PWR COM 025537101 474,330 3,253 0.69 20,561 -2.52 0.0178
2013-08-15 2013-06-30 13F AMERICAN ELEC PWR COM 025537101 471,077 471,077 21,093 0.0199
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.