4 institutions reported holding $13.1M of BUTTERFLY NETWORK INC (BFLYW) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($5.0M), GROUP ONE TRADING LLC ($3.9M), SIMPLEX TRADING, LLC ($3.6M), HRT FINANCIAL LP ($540,000). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $5.0M | 594,000 | Added |
| 2 | GROUP ONE TRADING LLC | $3.9M | 466,900 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $3.6M | 427,500 | Added |
| 4 | HRT FINANCIAL LP | $540,000 | 64,200 | New |
Source: SEC Form 13F filings · as of 2026-06-30