4 institutions reported holding $3.6M of ADURO CLEAN TECHNOLOGIES INC (ACTHF) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($2.0M), SIMPLEX TRADING, LLC ($934,568), GROUP ONE TRADING LLC ($310,472), HRT FINANCIAL LP ($296,000). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $2.0M | 127,500 | Added |
| 2 | SIMPLEX TRADING, LLC | $934,568 | 59,300 | Added |
| 3 | GROUP ONE TRADING LLC | $310,472 | 19,700 | Added |
| 4 | HRT FINANCIAL LP | $296,000 | 18,800 | New |
Source: SEC Form 13F filings · as of 2026-06-30