4 institutions reported holding $6.4M of HYLIION HOLDINGS CORP (HYLNWS) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($3.5M), GROUP ONE TRADING LLC ($2.2M), SIMPLEX TRADING, LLC ($495,471), SUMMIT SECURITIES GROUP LLC ($156,300). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $3.5M | 679,000 | Added |
| 2 | GROUP ONE TRADING LLC | $2.2M | 416,600 | Added |
| 3 | SIMPLEX TRADING, LLC | $495,471 | 95,100 | Trimmed |
| 4 | SUMMIT SECURITIES GROUP LLC | $156,300 | 30,000 | New |
Source: SEC Form 13F filings · as of 2026-06-30