2 institutions reported holding $1.4M of CONCRETE PUMPING HLDGS INC (BBCPW) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($1.3M), GROUP ONE TRADING LLC ($122,910). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $1.3M | 105,800 | New |
| 2 | GROUP ONE TRADING LLC | $122,910 | 10,200 | New |
Source: SEC Form 13F filings · as of 2026-06-30