1 institutions reported holding $947,162 of CUSTOM TRUCK ONE SOURCE INC (CTOSW) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($947,162). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $947,162 | 80,200 | Added |
Source: SEC Form 13F filings · as of 2026-06-30