Quantum-si Incorporated · NASDAQ:QSI
Quantum-si Incorporated shareholders
As of Jun 30, 2026, 137 institutions reported holding Quantum-si Incorporated. Largest: Vanguard, ARK and BlackRock. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Quantum-si Incorporated | Change | Filed |
|---|---|---|---|---|
| Vanguard | 9.3M | −471K | Aug 13, 2026 | |
| ARK | 7.17M | +289K | Aug 14, 2026 | |
| BlackRock | 5.23M | −8.19M | Aug 7, 2026 | |
| Amova Asset Management Americas, Inc. | 3.89M | −506K | Aug 13, 2026 | |
| Sumitomo Mitsui Trust Group, Inc. | 3.89M | −506K | Jul 30, 2026 | |
| Millennium | 3.13M | new | Aug 14, 2026 | |
| UBS | 2.56M | +859K | Aug 13, 2026 | |
| AQR Capital Management LLC | 2.35M | −43,514 | Aug 14, 2026 | |
| Geode Capital | 2.24M | −1.6M | Aug 12, 2026 | |
| Jane Street | 2.14M | new | Aug 14, 2026 |