Quantum-Si Inc
QSI- Exchange
- Nasdaq
- Industry
- Measuring & Controlling Devices, NEC
- SEC CIK
- 0001816431
In the last 90 days, Quantum-Si Inc insiders filed 0 open-market purchases and 3 sales; 141 institutions reported holding it in 13F filings for Q2 2026, worth $46.8M in total; ARK Invest is the only superinvestor holding it.
13F holders, Q2 2024
Institutional positions in Quantum-Si Inc as of Jun 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 99
- +5 vs. Q1 2024
- Shares held
- 53.5M
- +595.3K (+1.1%) vs. Q1 2024
- Total value
- $56.1M
- −$48.1M (−46.2%) vs. Q1 2024
- New holders
- 16
- 30 more added
- Sold out
- 11
- 29 more reduced
1 institution that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting QSI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 141 | $46.8M |
| Q1 2026 | 157 | $49.0M |
| Q4 2025 | 135 | $74.3M |
| Q3 2025 | 125 | $91.3M |
| Q2 2025 | 135 | $126.2M |
| Q1 2025 | 137 | $69.3M |
| Q4 2024 | 121 | $144.8M |
| Q3 2024 | 107 | $45.9M |
| Q2 2024 | 99 | $56.1M |
| Q1 2024 | 95 | $104.1M |
| Q4 2023 | 91 | $113.6M |
| Q3 2023 | 96 | $90.5M |
| Q2 2023 | 91 | $78.5M |
| Q1 2023 | 100 | $76.5M |
| Q4 2022 | 105 | $90.9M |
| Q3 2022 | 102 | $130.8M |
| Q2 2022 | 102 | $139.6M |
| Q1 2022 | 92 | $215.0M |
| Q4 2021 | 93 | $370.6M |
| Q3 2021 | 73 | $372.4M |
| Q2 2021 | 72 | $534.9M |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2024
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| American International Group, Inc. | 0 | $0 | 0.00% | −50,142−100.0% | Sold out |
| Manufacturers Life Insurance Company, The | 0 | $0 | 0.00% | −37,990−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −31,982−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −26,878−100.0% | Sold out |
| Simplicity Wealth,LLC | 0 | $0 | 0.00% | −14,090−100.0% | Sold out |
| Bleakley Financial Group, LLC | 0 | $0 | 0.00% | −14,090−100.0% | Sold out |
| Round Rock Advisors, LLC | 0 | $0 | 0.00% | −11,855−100.0% | Sold out |
| Buckingham Strategic Wealth, LLC | 0 | $0 | 0.00% | −10,388−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −2,108−100.0% | Sold out |
| Comerica Bank | 0 | $0 | 0.00% | −513−100.0% | Sold out |
| FSA Wealth Management LLC | – | – | – | – | Not filed |