5 institutions reported holding $82.2M of PLAINS ALL AMERN PIPELINE L (PAAPU) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($53.1M), IMC-Chicago, LLC ($18.1M), SIMPLEX TRADING, LLC ($11.0M), LCM Capital Management Inc ($68,040), CenterStar Asset Management, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $53.1M | 2.4M | Trimmed |
| 2 | IMC-Chicago, LLC | $18.1M | 812,800 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $11.0M | 492,300 | Trimmed |
| 4 | LCM Capital Management Inc | $68,040 | 12,000 | New |
| 5 | CenterStar Asset Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30