Today
+13.68%
5 Days
-8.90%
1 Month
+9.02%
6 Months
+46.64%
Year to Date
+20.91%
1 Year
-15.56%
Quantum-Si (QSI) Q3 2026 Earnings Call: Proteus Launch on Track, Cost Guidance Cut


| Shareholders | Proportion |
|---|---|
| Rothberg (Jonathan M) | 6.93% |
| BlackRock Institutional Trust Company, N.A. | 6.11% |
| Vanguard Capital Management, LLC | 3.55% |
| ARK Investment Management LLC | 3.48% |
| Shareholder Types | Proportion |
|---|---|
| Investment Advisor | 19.34% |
| Individual Investor | 10.68% |
| Investment Advisor/Hedge Fund | 8.71% |
| Hedge Fund | 2.40% |
Related Instruments