American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership861,402 shares
Latest Disclosed Value $ 112,912,465
Rhumbline Advisers reports 1.52% decrease in ownership of AEP / American Electric Power Company, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 861,402 shares of American Electric Power Company, Inc. (MX:AEP) valued at $112,912,465 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 874,694 shares of American Electric Power Company, Inc.. This represents a change in shares of -1.52% 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.

Upgrade to unlock premium data and export to Excel .

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 AMER ELEC PWR CO INC COM COM 025537101 861,402 -13,292 -1.52 112,912 11.95 0.0966
2026-02-13 2025-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 874,694 -14,754 -1.66 100,861 0.80 0.0815
2025-11-06 2025-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 889,448 -24,291 -2.66 100,063 5.54 0.0804
2025-08-12 2025-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 913,739 -5,488 -0.60 94,809 -5.61 0.0812
2025-05-29 2025-03-31 13F/A-1 AMER ELEC PWR CO INC COM COM 025537101 919,227 46,508 5.33 100,444 24.79 0.0940
2025-04-08 2025-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 919,227 46,508 100,444 0.0940
2025-05-29 2024-12-31 13F/A-1 AMER ELEC PWR CO INC COM COM 025537101 872,719 -10,199 -1.16 80,491 -11.15 0.0720
2025-01-30 2024-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 872,719 -10,199 80,491 0.0720
2024-11-12 2024-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 882,918 -25,073 -2.76 90,587 13.71 0.0817
2024-08-01 2024-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 907,991 -12,464 -1.35 79,667 0.52 0.0749
2024-05-09 2024-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 920,455 10,652 1.17 79,251 7.25 0.0761
2024-02-08 2023-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 909,803 -1,256 -0.14 73,894 7.83 0.0774
2023-11-09 2023-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 911,059 -21,183 -2.27 68,530 -12.70 0.0795
2023-08-08 2023-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 932,242 3,832 0.41 78,495 93,345.24 0.0879
2023-05-11 2023-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 928,410 12 0.00 84 -99.90 0.1042
2023-02-14 2022-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 928,398 32,800 3.66 88,151 13.85 0.1185
2022-11-10 2022-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 895,598 32,981 3.82 77,424 -6.45 0.1153
2022-08-11 2022-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 862,617 59,392 7.39 82,759 3.27 0.1208
2022-05-12 2022-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 803,225 77,351 10.66 80,138 24.09 0.1032
2022-02-10 2021-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 725,874 -24,185 -3.22 64,581 6.06 0.0792
2021-11-12 2021-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 750,059 -22,434 -2.90 60,890 -6.82 0.0824
2021-08-05 2021-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 772,493 -78,065 -9.18 65,345 -9.30 0.0857
2021-05-06 2021-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 850,558 -49,099 -5.46 72,042 -3.83 0.0979
2021-02-10 2020-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 899,657 -9,254 -1.02 74,914 0.85 0.1034
2020-11-12 2020-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 908,911 -13,136 -1.42 74,285 1.16 0.1164
2020-08-13 2020-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 922,047 -10,149 -1.09 73,432 -1.51 0.1226
2020-05-06 2020-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 932,196 -5,324 -0.57 74,557 -15.85 0.1563
2020-02-05 2019-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 937,520 14,241 1.54 88,605 2.43 0.1482
2019-10-23 2019-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 923,279 30,693 3.44 86,502 10.12 0.1581
2019-08-14 2019-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 892,586 23,470 2.70 78,556 7.92 0.1475
2019-05-01 2019-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 869,116 -25,819 -2.89 72,788 8.82 0.1410
2019-01-31 2018-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 894,935 -5,685 -0.63 66,887 4.78 0.1455
2018-11-07 2018-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 900,620 -14,945 -1.63 63,836 0.68 0.1233
2018-08-06 2018-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 915,565 1,594 0.17 63,403 1.14 0.1279
2018-05-02 2018-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 913,971 1,138 0.12 62,689 -6.65 0.1309
2018-02-09 2017-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 912,833 34,087 3.88 67,157 8.80 0.1364
2017-11-06 2017-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 878,746 6,842 0.78 61,723 1.90 0.1342
2017-08-02 2017-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 871,904 181 0.02 60,571 3.51 0.1383
2017-05-02 2017-03-31 13F AMER ELEC PWR CO INC COM COM 025537101 871,723 26,321 3.11 58,519 9.94 0.1367
2017-01-27 2016-12-31 13F AMER ELEC PWR CO INC COM COM 025537101 845,402 60,769 7.74 53,227 5.65 0.1349
2016-11-08 2016-09-30 13F AMER ELEC PWR CO INC COM COM 025537101 784,633 2,924 0.37 50,381 -8.05 0.1388
2016-08-11 2016-06-30 13F AMER ELEC PWR CO INC COM COM 025537101 781,709 48,794 6.66 54,790 12.58 0.1623
2016-05-02 2016-03-31 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 732,915 41,761 6.04 48,666 20.84 0.1510
2016-02-03 2015-12-31 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 691,154 1,068 0.15 40,274 2.64 0.1296
2015-11-04 2015-09-30 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 690,086 5,764 0.84 39,238 8.25 0.1335
2015-08-04 2015-06-30 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 684,322 -105,535 -13.36 36,249 -18.41 0.1155
2015-05-12 2015-03-31 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 789,857 -8,234 -1.03 44,429 -8.32 0.1282
2015-02-06 2014-12-31 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 798,091 -7,480 -0.93 48,460 15.22 0.1408
2014-11-12 2014-09-30 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 805,571 21,695 2.77 42,059 -3.79 0.1263
2014-08-06 2014-06-30 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 783,876 -9,573 -1.21 43,717 8.76 0.1283
2014-05-06 2014-03-31 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 793,449 -38,453 -4.62 40,196 3.38 0.1192
2014-02-03 2013-12-31 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 831,902 -38,060 -4.37 38,883 3.10 0.1147
2013-11-05 2013-09-30 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 869,962 -17,679 -1.99 37,713 -5.12 0.1169
2013-08-07 2013-06-30 13F AMERICAN ELECTRIC POWER COMMON COM 025537101 887,641 887,641 39,749 0.1277
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.