13 institutions reported holding $325.9M of GENERAL MOTORS CO 5632 DUE 101532 (GM.WSA) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($140.0M), Optiver Holding B.V. ($61.7M), SIMPLEX TRADING, LLC ($51.2M), GROUP ONE TRADING LLC ($32.9M), Capital Markets Trading UK LLP ($14.8M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $140.0M | 1.9M | Trimmed |
| 2 | Optiver Holding B.V. | $61.7M | 827,900 | Added |
| 3 | SIMPLEX TRADING, LLC | $51.2M | 686,800 | Trimmed |
| 4 | GROUP ONE TRADING LLC | $32.9M | 441,000 | Added |
| 5 | Capital Markets Trading UK LLP | $14.8M | 198,500 | Trimmed |
| 6 | JPMORGAN CHASE & CO | $13.8M | 189,300 | Trimmed |
| 7 | CMT Capital Markets Trading GmbH | $9.8M | 131,200 | Added |
| 8 | SG Americas Securities, LLC | $1.5M | 189,500 | Trimmed |
| 9 | Alpine Global Management, LLC | $349,388 | 385 | Trimmed |
| 10 | RH Tailwind Management, LLC | $0 | 0 | Exited |
| 11 | HRT FINANCIAL LP | $0 | 0 | Exited |
| 12 | Maven Securities LTD | $0 | 0 | Exited |
| 13 | Garton & Associates Financial Advisors LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31