American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership95,761 shares
Latest Disclosed Value $ 12,552,353
Robeco Institutional Asset Management B.V. reports 35.32% decrease in ownership of AEP / American Electric Power Company, Inc.

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 95,761 shares of American Electric Power Company, Inc. (MX:AEP) valued at $12,552,353 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 148,063 shares of American Electric Power Company, Inc.. This represents a change in shares of -35.32% 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)
2026-04-21 2026-03-31 13F AMERICAN ELEC PWR COM 025537101 95,761 -52,302 -35.32 12,552 -26.48 0.0179
2026-01-23 2025-12-31 13F AMERICAN ELEC PWR COM 025537101 148,063 20,829 16.37 17,073 19.28 0.0243
2025-10-22 2025-09-30 13F AMERICAN ELEC PWR COM 025537101 127,234 112,046 737.73 14,314 808.76 0.0207
2025-07-18 2025-06-30 13F AMERICAN ELEC PWR COM 025537101 15,188 -23,469 -60.71 1,576 -62.71 0.0025
2025-04-23 2025-03-31 13F AMERICAN ELEC PWR COM 025537101 38,657 9,425 32.24 4,224 56.68 0.0082
2025-01-23 2024-12-31 13F AMERICAN ELEC PWR COM 025537101 29,232 -9,905 -25.31 2,696 -32.85 0.0051
2024-10-29 2024-09-30 13F AMERICAN ELEC PWR COM 025537101 39,137 39,137 4,015 0.0080
2024-02-14 2023-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 0 -10,226 -100.00 0 -100.00
2024-02-08 2023-12-31 13F AMERICAN ELEC PWR COM 025537101 0 -10,226 0
2023-10-24 2023-09-30 13F AMERICAN ELEC PWR COM 025537101 10,226 -106,193 -91.22 769 -92.15 0.0021
2023-07-24 2023-06-30 13F AMERICAN ELEC PWR COM 025537101 116,419 -89,832 -43.55 9,802 -47.77 0.0257
2023-05-04 2023-03-31 13F AMERICAN ELEC PWR COM 025537101 206,251 -45,539 -18.09 18,767 -21.50 0.0512
2023-02-07 2022-12-31 13F AMERICAN ELEC PWR COM 025537101 251,790 165,767 192.70 23,907 221.50 0.0689
2022-12-01 2022-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 86,023 2,965 3.57 7,436 -6.69 0.0240
2022-10-27 2022-09-30 13F AMERICAN ELEC PWR COM 025537101 86,023 2,965 7,436 0.0237
2022-12-01 2022-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 83,058 27,709 50.06 7,969 44.29 0.0248
2022-07-27 2022-06-30 13F AMERICAN ELEC PWR COM 025537101 83,058 27,709 7,969 0.0244
2022-12-01 2022-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 55,349 45,824 481.09 5,523 551.30 0.0130
2022-04-26 2022-03-31 13F AMERICAN ELEC PWR COM 025537101 55,349 45,824 5,523 0.0129
2022-12-01 2021-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 9,525 1,371 16.81 848 28.10 0.0018
2022-01-31 2021-12-31 13F AMERICAN ELEC PWR COM 025537101 9,525 1,371 848 0.0018
2022-12-01 2021-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 8,154 -11,260 -58.00 662 -59.66 0.0015
2021-10-20 2021-09-30 13F AMERICAN ELEC PWR COM 025537101 8,154 -11,260 662 0.0014
2022-12-01 2021-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 19,414 -6,718 -25.71 1,641 -25.85 0.0036
2021-07-28 2021-06-30 13F AMERICAN ELEC PWR COM 025537101 19,414 -6,718 1,641 0.0036
2022-12-01 2021-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 26,132 0 0.00 2,213 1.65 0.0055
2021-04-23 2021-03-31 13F AMERICAN ELEC PWR COM 025537101 26,132 0 2,213 0.0054
2022-12-01 2020-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 26,132 -48,677 -65.07 2,177 -64.40 0.0057
2021-01-28 2020-12-31 13F AMERICAN ELEC PWR COM 025537101 26,132 -48,677 2,177 0.0057
2021-01-19 2020-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 74,809 -122,632 -62.11 6,115 -61.11 0.0189
2020-10-29 2020-09-30 13F AMERICAN ELEC PWR COM 025537101 74,809 -122,632 6,115 18,885.1102
2021-01-19 2020-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 197,441 -455,296 -69.75 15,722 -69.88 0.0534
2020-07-20 2020-06-30 13F AMERICAN ELEC PWR COM 025537101 197,441 -455,296 15,722 53,347.5503
2021-01-19 2020-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 652,737 -147,008 -18.38 52,205 -30.94 0.2094
2020-04-30 2020-03-31 13F AMERICAN ELEC PWR COM 025537101 652,737 -147,008 52,205 209,249.4133
2021-01-19 2019-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 799,745 -21,450 -2.61 75,589 -1.75 0.2420
2020-02-06 2019-12-31 13F AMERICAN ELEC PWR COM 025537101 799,745 -21,450 75,589 241,765.6038
2021-01-19 2019-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 821,195 -178,053 -17.82 76,937 -12.52 0.2716
2019-10-17 2019-09-30 13F AMERICAN ELEC PWR COM 025537101 821,195 -178,053 76,937 271,234.5655
2021-01-19 2019-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 999,248 43,962 4.60 87,945 9.92 0.3106
2019-07-19 2019-06-30 13F AMERICAN ELEC PWR COM 025537101 999,248 43,962 87,945 310,117.0736
2021-01-19 2019-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 955,286 74,837 8.50 80,009 21.58 0.2942
2019-05-02 2019-03-31 13F AMERICAN ELEC PWR COM 025537101 955,286 74,837 80,009 293,764.5861
2021-01-19 2018-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 880,449 3,231 0.37 65,806 5.83 0.2955
2019-02-08 2018-12-31 13F AMERICAN ELEC PWR COM 025537101 880,449 3,231 65,806 294,972.1340
2021-01-19 2018-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 877,218 -6,701 -0.76 62,179 1.58 0.2462
2018-10-25 2018-09-30 13F AMERICAN ELEC PWR COM 025537101 877,218 -6,701 62,179
2021-01-19 2018-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 883,919 -48,279 -5.18 61,210 -4.27 0.2788
2018-08-03 2018-06-30 13F AMERICAN ELEC PWR COM 025537101 883,919 -48,279 61,210
2021-01-19 2018-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 932,198 16,500 1.80 63,941 -5.09 0.3000
2018-05-07 2018-03-31 13F AMERICAN ELEC PWR COM 025537101 932,198 16,500 63,941 299,022.1465
2021-01-19 2017-12-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 915,698 8,493 0.94 67,369 5.72 0.3491
2018-01-25 2017-12-31 13F AMERICAN ELEC PWR COM 025537101 915,698 8,493 67,369
2021-01-19 2017-09-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 907,205 -63,628 -6.55 63,723 -5.52 0.3957
2017-10-17 2017-09-30 13F AMERICAN ELEC PWR COM 025537101 907,205 -63,628 63,723 394,786.3397
2021-01-19 2017-06-30 13F/A-1 AMERICAN ELEC PWR COM 025537101 970,833 -209,952 -17.78 67,444 -14.91 0.4344
2017-08-07 2017-06-30 13F AMERICAN ELEC PWR COM 025537101 970,833 -209,952 67,444 439,114.7570
2021-01-19 2017-03-31 13F/A-1 AMERICAN ELEC PWR COM 025537101 1,180,785 -14,727 -1.23 79,266 5.31 0.5278
2017-05-15 2017-03-31 13F AMERICAN ELEC PWR COM 025537101 1,180,785 -14,727 79,266 526,479.9852
2017-02-09 2016-12-31 13F AMERICAN ELEC PWR COM 025537101 1,195,512 78,350 7.01 75,272 4.94 0.5889
2016-11-07 2016-09-30 13F AMERICAN ELEC PWR COM 025537101 1,117,162 99,436 9.77 71,730 0.56 0.5302
2016-07-22 2016-06-30 13F AMERICAN ELEC PWR COM 025537101 1,017,726 -27,417 -2.62 71,331 2.78 0.5409
2016-05-16 2016-03-31 13F AMERICAN ELEC PWR COM 025537101 1,045,143 34,908 3.46 69,400 17.89 0.5567
2016-02-08 2015-12-31 13F AMERICAN ELEC PWR COM 025537101 1,010,235 94,246 10.29 58,866 13.03 0.5034
2015-11-12 2015-09-30 13F AMERICAN ELEC PWR COM 025537101 915,989 56,210 6.54 52,082 14.35 0.3967
2015-08-17 2015-06-30 13F AMERICAN ELEC PWR COM 025537101 859,779 -25,331 -2.86 45,546 -8.52 0.3457
2015-04-24 2015-03-31 13F AMERICAN ELEC PWR COM 025537101 885,110 -14,827 -1.65 49,787 -8.89 0.3743
2015-02-12 2014-12-31 13F AMERICAN ELEC PWR COM 025537101 899,937 73,254 8.86 54,645 26.60 0.3918
2014-11-10 2014-09-30 13F AMERICAN ELEC PWR COM 025537101 826,683 144,727 21.22 43,163 13.49 0.3083
2014-08-13 2014-06-30 13F AMERICAN ELEC PWR COM 025537101 681,956 213,042 45.43 38,032 60.11 0.2722
2014-05-07 2014-03-31 13F AMERICAN ELEC PWR COM 025537101 468,914 59,191 14.45 23,754 24.05 0.1822
2014-02-04 2013-12-31 13F AMERICAN ELEC PWR COM 025537101 409,723 9,960 2.49 19,149 10.50 0.1591
2013-11-12 2013-09-30 13F AMERICAN ELEC PWR COM 025537101 399,763 -169,414 -29.76 17,330 -32.01 0.1684
2013-08-27 2013-06-30 13F American Electric Power COM 025537101 569,177 569,177 25,488 0.2578
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.