American Electric Power Company, Inc.
MX ˙ BMV ˙ US0255371017
SecurityMX:AEP / American Electric Power Company, Inc.
InstitutionCalamos Advisors LLC
Latest Disclosed Ownership143,808 shares
Latest Disclosed Value $ 18,850,352
Calamos Advisors LLC reports 6.35% increase in ownership of AEP / American Electric Power Company, Inc.

On May 4, 2026 - Calamos Advisors LLC filed a 13F-HR form disclosing ownership of 143,808 shares of American Electric Power Company, Inc. (MX:AEP) valued at $18,850,352 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 135,218 shares of American Electric Power Company, Inc.. This represents a change in shares of 6.35% 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)
2026-05-04 2026-03-31 13F AMERICAN ELEC PWR COM 025537101 143,808 8,590 6.35 18,850 20.90 0.0665
2026-01-29 2025-12-31 13F AMERICAN ELEC PWR COM 025537101 135,218 -5,490 -3.90 15,592 -1.50 0.0586
2025-10-20 2025-09-30 13F AMERICAN ELEC PWR COM 025537101 140,708 0 0.00 15,830 8.43 0.0585
2025-08-08 2025-06-30 13F AMERICAN ELEC PWR COM 025537101 140,708 0 0.00 14,600 -5.05 0.0575
2025-04-29 2025-03-31 13F AMERICAN ELEC PWR COM 025537101 140,708 1,567 1.13 15,375 19.82 0.0669
2025-01-24 2024-12-31 13F AMERICAN ELEC PWR COM 025537101 139,141 0 0.00 12,833 -10.11 0.0537
2024-11-07 2024-09-30 13F AMERICAN ELEC PWR COM 025537101 139,141 -3,414 -2.39 14,276 14.14 0.0617
2024-07-25 2024-06-30 13F AMERICAN ELEC PWR COM 025537101 142,555 -5,203 -3.52 12,508 -1.68 0.0556
2024-05-08 2024-03-31 13F AMERICAN ELEC PWR COM 025537101 147,758 -3,716 -2.45 12,722 3.41 0.0603
2024-01-31 2023-12-31 13F AMERICAN ELEC PWR COM 025537101 151,474 -1,978 -1.29 12,303 6.58 0.0597
2023-10-26 2023-09-30 13F AMERICAN ELEC PWR COM 025537101 153,452 0 0.00 11,543 -10.67 0.0600
2023-07-28 2023-06-30 13F AMERICAN ELEC PWR COM 025537101 153,452 0 0.00 12,921 -7.46 0.0639
2023-05-04 2023-03-31 13F AMERICAN ELEC PWR COM 025537101 153,452 -19,185 -11.11 13,963 -14.82 0.0682
2023-01-26 2022-12-31 13F AMERICAN ELEC PWR COM 025537101 172,637 -30,523 -15.02 16,392 -6.67 0.0769
2022-10-24 2022-09-30 13F AMERICAN ELEC PWR COM 025537101 203,160 0 0.00 17,563 -9.89 0.0803
2022-08-01 2022-06-30 13F AMERICAN ELEC PWR COM 025537101 203,160 5,471 2.77 19,491 -1.18 0.0841
2022-05-03 2022-03-31 13F AMERICAN ELEC PWR COM 025537101 197,689 17,787 9.89 19,723 118.73 0.0740
2022-02-01 2021-12-31 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 179,902 -2,469 -1.35 9,017 3.72 0.0337
2022-02-01 2021-12-31 13F AMERICAN ELEC PWR COM 025537101 171,338 15,244
2021-10-26 2021-09-30 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 182,371 -480 -0.26 8,694 -3.22 0.0380
2021-10-26 2021-09-30 13F AMERICAN ELEC PWR COM 025537101 164,705 14,533 13,371 0.0584
2021-07-22 2021-06-30 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 182,851 133 0.07 8,983 1.87 0.0410
2021-07-22 2021-06-30 13F AMERICAN ELEC PWR COM 025537101 150,172 34,156 12,703 0.0580
2021-04-12 2021-03-31 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 182,718 -690,550 -79.08 8,818 -79.85 0.0481
2021-04-12 2021-03-31 13F AMERICAN ELEC PWR COM 025537101 116,016 3,585 9,827 0.0536
2021-01-27 2020-12-31 13F AMERICAN ELEC PWR UNIT 08/01/2021 025537127 873,268 9,803 1.14 43,751 4.45 0.2539
2021-01-27 2020-12-31 13F AMERICAN ELEC PWR COM 025537101 112,431 -4,869 9,362 0.0543
2020-10-26 2020-09-30 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 863,465 -157,243 -15.41 41,887 -15.23 0.2696
2020-10-26 2020-09-30 13F AMERICAN ELEC PWR COM 025537101 117,300 -10,295 9,587 0.0617
2020-07-27 2020-06-30 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 1,020,708 -942 -0.09 49,412 0.24 0.3493
2020-07-27 2020-06-30 13F AMERICAN ELEC PWR COM 025537101 127,595 -8,164 10,162 0.0718
2020-04-28 2020-03-31 13F AMERICAN ELEC PWR UNIT 03/15/2022 025537127 1,021,650 -245,542 -19.38 49,295 -28.13 0.3868
2020-04-28 2020-03-31 13F AMERICAN ELEC PWR COM 025537101 135,759 -13,663 10,858 0.0852
2020-01-15 2019-12-31 13F AMERICAN ELECTRIC POWER CONVERTIBLE PREFERRED SECURITY 025537127 1,267,192 -964 -0.08 68,593 -1.80 0.3392
2020-01-15 2019-12-31 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 149,422 -2,414 14,122 0.0698
2019-10-21 2019-09-30 13F AMERICAN ELECTRIC POWER CONVERTIBLE PREFERRED SECURITY 025537127 1,268,156 957 0.08 69,850 3.01 0.3804
2019-10-21 2019-09-30 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 151,836 13,002 14,226 0.0775
2019-08-07 2019-06-30 13F AMERICAN ELECTRIC POWER CONVERTIBLE PREFERRED SECURITY 025537127 1,267,199 -3,875 -0.30 67,808 3.69 0.3765
2019-08-07 2019-06-30 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 138,834 -9,701 12,219 0.0678
2019-04-12 2019-03-31 13F AMERICAN ELECTRIC POWER CONVERTIBLE PREFERRED SECURITY 025537127 1,271,074 1,124,016 764.34 65,397 495.01 0.4081
2019-04-12 2019-03-31 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 148,535 1,477 12,440 0.0776
2019-01-24 2018-12-31 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 147,058 21,702 17.31 10,991 23.70 0.0725
2018-10-22 2018-09-30 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 125,356 7,889 6.72 8,885 9.22 0.0489
2018-07-17 2018-06-30 13F AMERICAN ELECTRIC POWER COMMON STOCK 025537101 117,467 42,949 57.64 8,135 59.14 0.0497
2018-04-13 2018-03-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 74,518 3,521 4.96 5,112 -2.13 0.0333
2018-02-13 2017-12-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 70,997 -1,506 -2.08 5,223 2.55 0.0266
2017-10-25 2017-09-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 72,503 2,656 3.80 5,093 4.97 0.0394
2017-08-09 2017-06-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 69,847 1,850 2.72 4,852 6.29 0.0359
2017-04-20 2017-03-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 67,997 -157 -0.23 4,565 6.39 0.0359
2017-02-06 2016-12-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 68,154 -3,628 -5.05 4,291 -6.90 0.0341
2016-11-14 2016-09-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 71,782 -1,217 -1.67 4,609 -9.91 0.0329
2016-07-26 2016-06-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 72,999 26 0.04 5,116 5.59 0.0359
2016-04-25 2016-03-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 72,973 4,304 6.27 4,845 21.09 0.0321
2016-02-05 2015-12-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 68,669 0 0.00 4,001 2.46 0.0254
2015-11-10 2015-09-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 68,669 22 0.03 3,905 7.40 0.0269
2015-08-14 2015-06-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 68,647 -3,647 -5.04 3,636 -10.60 0.0225
2015-05-13 2015-03-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 72,294 4,040 5.92 4,067 -1.86 0.0255
2015-02-13 2014-12-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 68,254 354 0.52 4,144 16.90 0.0274
2014-11-14 2014-09-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 67,900 0 0.00 3,545 -6.39 0.0237
2014-08-14 2014-06-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 67,900 4,900 7.78 3,787 18.64 0.0240
2014-05-16 2014-03-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 63,000 0 0.00 3,192 8.39 0.0204
2014-02-14 2013-12-31 13F AMER ELECTRIC POWER COMMON STOCK 025537101 63,000 0 0.00 2,945 7.84 0.0187
2013-11-14 2013-09-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 63,000 0 0.00 2,731 -3.19 0.0171
2013-08-12 2013-06-30 13F AMER ELECTRIC POWER COMMON STOCK 025537101 63,000 63,000 2,821 0.0184
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.