Quantum-Si Inc. -CW27QSIAWPreferred / convertible
13F holders, Q3 2025 (September 30)4holders +2
2new positions
0sold out
$0.27avg. 13F price*
At the end of Q3 2025, 4 institutions reported holding Quantum-Si Inc. -CW27 (QSIAW) in their 13F filings, up 2 from Q2 2025. 2 opened new positions and 0 sold out. The largest holders were Deerfield Management Company, L.P. ($90K), Susquehanna International Group, LLP ($38K) and Jane Street Group, LLC ($5K).
- Company
- Quantum-Si Inc. -CW27
- CUSIP
- 74765K113
- Latest filing quarter
- Q1 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $38K |
| Exits | 0 | $0 |
All 13F filers, Q2 2025 → Q3 2025: 147,495 shares bought, net +147,495 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 4 holders
| Deerfield Management Company, L.P. | — | No change | 333,333 | $90K |
| Susquehanna International Group, LLP | — | New | 145,733 | $38K |
| Jane Street Group, LLC | — | Add +3.7% | 17,137 | $5K |
| UBS Group AG | — | New | 1,144 | $309 |
"% of holder's portfolio" is QSIAW's weight in each manager's 13F, not the share of Quantum-Si Inc. -CW27 the manager owns.