6 institutions reported holding $72.7M of AMERICAN ELEC PWR CO INC (AEPPL) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($44.5M), SIMPLEX TRADING, LLC ($18.1M), GROUP ONE TRADING LLC ($9.9M), SG Americas Securities, LLC ($186,000), HRT FINANCIAL LP ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $44.5M | 339,700 | Added |
| 2 | SIMPLEX TRADING, LLC | $18.1M | 138,200 | Trimmed |
| 3 | GROUP ONE TRADING LLC | $9.9M | 75,400 | Added |
| 4 | SG Americas Securities, LLC | $186,000 | 42,200 | Trimmed |
| 5 | HRT FINANCIAL LP | $0 | 0 | Exited |
| 6 | OnyxPoint Global Management LP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31