American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership14,486,169 shares
Latest Disclosed Value $ 1,898,847,442
Morgan Stanley reports 1.20% decrease in ownership of AEP / American Electric Power Company, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 14,486,169 shares of American Electric Power Company, Inc. (MX:AEP) valued at $1,898,847,442 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 14,661,858 shares of American Electric Power Company, Inc.. This represents a change in shares of -1.20% 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)
2026-05-15 2026-03-31 13F AMERICAN ELEC PWR COM 025537101 14,486,169 -175,689 -1.20 1,898,847 12.31 0.1144
2026-05-27 2025-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 14,661,858 271,879 1.89 1,690,659 4.43 0.1009
2026-02-13 2025-12-31 13F AMERICAN ELEC PWR COM 025537101 14,661,858 271,879 1,690,659 0.1009
2026-05-27 2025-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 14,389,979 355,708 2.53 1,618,873 11.17 0.0980
2025-11-14 2025-09-30 13F AMERICAN ELEC PWR COM 025537101 14,389,979 355,708 1,618,873 0.0980
2025-08-15 2025-06-30 13F AMERICAN ELEC PWR COM 025537101 14,034,271 179,103 1.29 1,456,196 -3.82 0.0949
2025-05-15 2025-03-31 13F AMERICAN ELEC PWR COM 025537101 13,855,168 1,139,461 8.96 1,513,954 29.09 0.1082
2025-05-15 2024-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 12,715,707 460,405 3.76 1,172,770 -6.73 0.0822
2025-02-14 2024-12-31 13F AMERICAN ELEC PWR COM 025537101 12,715,707 460,405 1,172,770 0.0822
2025-05-14 2024-09-30 13F/A-2 AMERICAN ELEC PWR COM 025537101 12,255,302 119,633 0.99 1,257,394 18.09 0.0912
2025-02-14 2024-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 12,255,302 119,633 1,257,394 0.0912
2024-11-14 2024-09-30 13F AMERICAN ELEC PWR COM 025537101 12,255,302 119,633 1,257,394 0.0108
2025-05-14 2024-06-30 13F/A-2 AMERICAN ELEC PWR COM 025537101 12,135,669 -511,568 -4.04 1,064,784 -2.22 0.0824
2024-10-17 2024-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 12,135,669 -511,568 1,064,784 0.0824
2024-08-14 2024-06-30 13F AMERICAN ELEC PWR COM 025537101 12,135,669 -511,568 1,064,784 0.0824
2024-10-17 2024-03-31 13F/A-2 AMERICAN ELEC PWR COM 025537101 12,647,237 685,199 5.73 1,088,927 12.08 0.0874
2024-08-16 2024-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 12,647,237 685,199 1,088,927 0.0874
2024-05-15 2024-03-31 13F AMERICAN ELEC PWR COM 025537101 12,647,237 685,199 1,088,927 0.0874
2024-08-16 2023-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 11,962,038 -2,930,812 -19.68 971,557 -13.27 0.0856
2024-02-13 2023-12-31 13F AMERICAN ELEC PWR COM 025537101 11,962,038 -2,930,812 971,557 0.0856
2023-11-15 2023-09-30 13F AMERICAN ELEC PWR COM 025537101 14,892,850 587,145 4.10 1,120,240 -7.00 0.1139
2023-08-14 2023-06-30 13F AMERICAN ELEC PWR COM 025537101 14,305,705 385,704 2.77 1,204,541 -4.90 0.1187
2023-05-15 2023-03-31 13F AMERICAN ELEC PWR COM 025537101 13,920,001 562,674 4.21 1,266,581 -0.13 0.1358
2023-02-14 2022-12-31 13F AMERICAN ELEC PWR COM 025537101 13,357,327 2,560,192 23.71 1,268,278 35.88 0.1440
2022-11-14 2022-09-30 13F AMERICAN ELEC PWR COM 025537101 10,797,135 206,115 1.95 933,413 -8.14 0.1272
2022-10-27 2022-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 10,591,020 2,068,699 24.27 1,016,103 19.50 0.1319
2022-08-15 2022-06-30 13F AMERICAN ELEC PWR COM 025537101 10,591,020 2,068,699 1,016,103 0.1319
2022-10-27 2022-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 8,522,321 8,463,121 14,295.81 850,273 28,635.15 0.1147
2022-05-13 2022-03-31 13F AMERICAN ELEC PWR COM 025537101 8,522,321 8,463,121 850,273 0.1147
2022-02-14 2021-12-31 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 59,200 -14,305 -19.46 2,959 -16.34 0.0004
2022-02-14 2021-12-31 13F AMERICAN ELEC PWR COM 025537101 7,984,846 710,412
2021-11-15 2021-09-30 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 73,505 -14,916 -16.87 3,537 -18.48 0.0005
2021-11-15 2021-09-30 13F AMERICAN ELEC PWR COM 025537101 7,511,352 1,347,736 609,773 0.0821
2021-08-23 2021-06-30 13F/A-1 AMERICAN ELEC PWR UNIT 08/01/2021 025537127 88,421 4,210 5.00 4,339 6.87 0.0006
2021-08-23 2021-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 6,163,616 1,061,831 521,379 0.0688
2021-08-16 2021-06-30 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 88,421 -5,013,364 4,339 0.0006
2021-08-16 2021-06-30 13F AMERICAN ELEC PWR COM 025537101 6,163,616 6,075,195 521,379 0.0687
2021-05-17 2021-03-31 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 84,211 -40,165 -32.29 4,060 -33.96 0.0006
2021-05-17 2021-03-31 13F AMERICAN ELEC PWR COM 025537101 5,101,785 -196,512 432,121 0.0635
2021-02-16 2020-12-31 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 124,376 -20,215 -13.98 6,148 -12.66 0.0009
2021-02-16 2020-12-31 13F AMERICAN ELEC PWR COM 025537101 5,298,297 848,299 441,189 0.0681
2020-11-13 2020-09-30 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 144,591 119,864 484.75 7,039 485.61 0.0014
2020-11-13 2020-09-30 13F AMERICAN ELEC PWR COM 025537101 4,449,998 458,077 363,697 0.0703
2020-08-14 2020-06-30 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 24,727 -153,467 -86.12 1,202 -85.87 0.0003
2020-08-14 2020-06-30 13F AMERICAN ELEC PWR COM 025537101 3,991,921 -126,095 317,918 0.0704
2020-05-26 2020-03-31 13F/A-1 AMERICAN ELEC PWR UNIT 03/15/2022 025537127 178,194 96,164 117.23 8,507 92.77 0.0023
2020-05-26 2020-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 4,118,016 -44,012 329,358 0.0895
2020-05-15 2020-03-31 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 178,194 -3,939,822 8,507 653.5149
2020-05-15 2020-03-31 13F AMERICAN ELEC PWR COM 025537101 4,118,016 4,035,986 329,358 25,301.5603
2020-02-14 2019-12-31 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 82,030 -118,360 -59.06 4,413 -59.91 0.0010
2020-02-14 2019-12-31 13F AMERICAN ELEC PWR COM 025537101 4,162,028 -1,353,418 393,354 0.0915
2019-11-14 2019-09-30 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 200,390 186,158 1,308.02 11,009 1,350.46 0.0029
2019-11-14 2019-09-30 13F AMERICAN ELEC PWR COM 025537101 5,515,446 1,412,478 516,743 0.1368
2019-08-14 2019-06-30 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 14,232 -31,213 -68.68 759 -67.21 0.0002
2019-08-14 2019-06-30 13F AMERICAN ELEC PWR COM 025537101 4,102,968 -16,674 361,102 0.0961
2019-05-15 2019-03-31 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 45,445 -4,025,930 -98.88 2,315 -99.24 0.0007
2019-05-15 2019-03-31 13F AMERICAN ELEC PWR COM 025537101 4,119,642 48,267 345,021 0.0977
2019-02-14 2018-12-31 13F AMERICAN ELEC PWR COM 025537101 4,071,375 375,632 10.16 304,296 16.16 0.0911
2019-04-23 2018-09-30 13F/A-2 AMERICAN ELEC PWR COM 025537101 3,695,743 714,473 23.97 261,954 26.88 0.0656
2018-11-20 2018-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 3,695,743 0 261,954 0.0656
2018-11-14 2018-09-30 13F AMERICAN ELEC PWR COM 025537101 3,695,743 714,473 261,954
2019-04-23 2018-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 2,981,270 -273,237 -8.40 206,451 -7.51 0.0558
2018-08-14 2018-06-30 13F AMERICAN ELEC PWR COM 025537101 2,981,270 -273,237 206,451
2019-04-23 2018-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 3,254,507 300,812 10.18 223,225 2.73 0.0620
2018-05-14 2018-03-31 13F AMERICAN ELEC PWR COM 025537101 3,254,507 300,812 223,225
2019-04-23 2017-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 2,953,695 442,910 17.64 217,303 23.22 0.0595
2018-02-14 2017-12-31 13F AMERICAN ELEC PWR COM 025537101 2,953,695 442,910 217,303
2017-11-14 2017-09-30 13F AMERICAN ELEC PWR COM 025537101 2,510,785 -310,006 -10.99 176,356 -10.00 0.0528
2017-08-11 2017-06-30 13F AMERICAN ELEC PWR COM 025537101 2,820,791 162,369 6.11 195,960 9.81 0.0592
2017-05-22 2017-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 2,658,422 66,502 2.57 178,458 9.36 0.0548
2017-05-12 2017-03-31 13F AMERICAN ELEC PWR COM 025537101 2,658,422 178,458
2017-02-22 2016-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 2,591,920 -825,872 -24.16 163,187 -25.64 0.0534
2017-02-13 2016-12-31 13F AMERICAN ELEC PWR COM 025537101 2,591,920 163,187
2016-11-10 2016-09-30 13F AMERICAN ELEC PWR COM 025537101 3,417,792 35,598 1.05 219,458 -7.42 0.0750
2016-08-12 2016-06-30 13F AMERICAN ELEC PWR COM 025537101 3,382,194 -156,560 -4.42 237,055 0.89 0.0856
2016-05-12 2016-03-31 13F AMERICAN ELEC PWR COM 025537101 3,538,754 600,757 20.45 234,973 37.25 0.0904
2016-02-09 2015-12-31 13F AMERICAN ELEC PWR COM 025537101 2,937,997 -688,571 -18.99 171,199 -16.98 0.0620
2016-02-08 2015-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 3,626,568 -84,078 -2.27 206,207 4.91 0.0762
2015-11-09 2015-09-30 13F AMERICAN ELEC PWR COM 025537101 3,626,568 206,207
2015-08-12 2015-06-30 13F AMERICAN ELEC PWR COM 025537101 3,710,646 -65,122 -1.72 196,554 -7.45 0.0681
2015-05-14 2015-03-31 13F AMERICAN ELEC PWR COM 025537101 3,775,768 -207,858 -5.22 212,387 -12.20 0.0782
2015-02-13 2014-12-31 13F AMERICAN ELEC PWR COM 025537101 3,983,626 167,803 4.40 241,885 21.41 0.0885
2014-12-16 2014-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 3,815,823 211,395 5.86 199,225 -0.89 0.0766
2014-11-14 2014-09-30 13F AMERICAN ELEC PWR COM 025537101 3,815,823 199,225
2014-08-12 2014-06-30 13F AMERICAN ELEC PWR COM 025537101 3,604,428 -167,974 -4.45 201,022 5.19 0.3438
2014-05-13 2014-03-31 13F AMERICAN ELEC PWR COM 025537101 3,772,402 374,578 11.02 191,111 20.34 0.0800
2014-02-13 2013-12-31 13F AMERICAN ELEC PWR COM 025537101 3,397,824 -166,191 -4.66 158,814 2.79 0.0676
2013-11-13 2013-09-30 13F AMERICAN ELEC PWR INC COM S COM 025537101 3,564,015 -756,931 -17.52 154,502 -20.15 0.0730
2013-08-08 2013-06-30 13F AMERICAN ELEC PWR INC COM S COM 025537101 4,320,946 4,320,946 193,494 0.0976
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.