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, Q1 2024
Institutional positions in Quantum-Si Inc as of Mar 31, 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
- 95
- +4 vs. Q4 2023
- Shares held
- 53.0M
- −3.61M (−6.4%) vs. Q4 2023
- Total value
- $104.1M
- −$9.48M (−8.3%) vs. Q4 2023
- New holders
- 13
- 19 more added
- Sold out
- 9
- 39 more reduced
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 12,768,876 | $25.2M | 0.17% | −2,750,446−17.7% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 8,054,503 | $15.9M | 0.01% | −478,414−5.6% | Reduced |
| Nikko Asset Management Americas, Inc. | 8,054,503 | $15.7M | 0.16% | −478,414−5.6% | Reduced |
| BlackRock Inc. | 7,231,995 | $14.2M | 0.00% | −151,576−2.1% | Reduced |
| Vanguard Group Inc | 5,300,685 | $10.4M | 0.00% | +82,463+1.6% | Added |
| State Street Corp | 2,159,809 | $4.25M | 0.00% | −50,028−2.3% | Reduced |
| Geode Capital Management, LLC | 2,134,029 | $4.20M | 0.00% | +10,577+0.5% | Added |
| Northern Trust Corp | 822,339 | $1.62M | 0.00% | −2,048−0.2% | Reduced |
| Fosun International Ltd | 743,935 | $1.47M | 0.46% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 506,697 | $998.2K | 0.00% | +506,697 | New |
| Bridgeway Capital Management, LLC | 406,700 | $801.2K | 0.02% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 320,697 | $631.8K | 0.00% | +31,162+10.8% | Added |
| Bank of New York Mellon Corp | 311,649 | $613.9K | 0.00% | −30,733−9.0% | Reduced |
| Knollwood Investment Advisory, LLC | 300,000 | $591.0K | 0.11% | 00.0% | Unchanged |
| General American Investors Co Inc | 294,350 | $579.9K | 0.04% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 277,819 | $547.3K | 0.00% | −11,654−4.0% | Reduced |
| Charles Schwab Investment Management Inc | 261,475 | $515.1K | 0.00% | +880+0.3% | Added |
| Morgan Stanley | 227,667 | $448.5K | 0.00% | −15,608−6.4% | Reduced |
| Millennium Management LLC | 189,787 | $373.9K | 0.00% | +189,787 | New |
| Neumann Advisory Hong Kong Ltd | 166,198 | $327.0K | 0.16% | 00.0% | Unchanged |
| Jane Street Group, LLC | 151,123 | $297.7K | 0.00% | +138,909+1,137.3% | Added |
| Rhumbline Advisers | 144,734 | $285.1K | 0.00% | +3,963+2.8% | Added |
| Green Alpha Advisors, LLC | 134,616 | $265.2K | 0.19% | +2,831+2.1% | Added |
| Two Sigma Investments, LP | 132,556 | $261.1K | 0.00% | +56,665+74.7% | Added |
| Pathstone Holdings, LLC | 115,447 | $227.4K | 0.00% | −295−0.3% | Reduced |
| UBS Group AG | 103,160 | $203.2K | 0.00% | −8,029−7.2% | Reduced |
| Barclays PLC | 101,355 | $199.7K | 0.00% | −68,253−40.2% | Reduced |
| Goldman Sachs Group Inc | 93,866 | $184.9K | 0.00% | −12,212−11.5% | Reduced |
| Citadel Advisors LLC | 93,000 | $183.2K | 0.00% | −32,130−25.7% | Reduced |
| Price T Rowe Associates Inc | 59,727 | $118.0K | 0.00% | +5,945+11.1% | Added |
| Bank of America Corp | 56,802 | $111.9K | 0.00% | −133,020−70.1% | Reduced |
| Alliancebernstein L.P. | 55,200 | $108.7K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 53,070 | $104.5K | 0.00% | +4,612+9.5% | Added |
| American International Group, Inc. | 50,142 | $98.8K | 0.00% | −431−0.9% | Reduced |
| Virtu Financial LLC | 49,988 | $98.0K | 0.01% | +49,988 | New |
| Ameriprise Financial Inc | 43,600 | $85.9K | 0.00% | +29,300+204.9% | Added |
| JPMorgan Chase & Co | 42,282 | $83.3K | 0.00% | −26,767−38.8% | Reduced |
| MetLife Investment Management | 41,352 | $81.5K | 0.00% | −12,331−23.0% | Reduced |
| Principal Financial Group Inc | 41,027 | $80.8K | 0.00% | −2,274−5.3% | Reduced |
| Deutsche Bank AG | 40,960 | $80.7K | 0.00% | −1,905−4.4% | Reduced |
| Invesco Ltd. | 40,074 | $78.9K | 0.00% | −147,860−78.7% | Reduced |
| Manufacturers Life Insurance Company, The | 37,990 | $74.8K | 0.00% | −4,884−11.4% | Reduced |
| Red Wave Investments LLC | 37,000 | $72.9K | 0.03% | 00.0% | Unchanged |
| SEI Investments Co | 34,700 | $68.4K | 0.00% | +34,700 | New |
| Cambridge Investment Research Advisors, Inc. | 33,355 | $66.0K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 32,867 | $64.7K | 0.00% | −11,740−26.3% | Reduced |
| American Century Companies Inc | 31,982 | $63.0K | 0.00% | +31,982 | New |
| Two Sigma Advisers, LP | 30,700 | $60.5K | 0.00% | +7,300+31.2% | Added |
| Raymond James Financial Services Advisors, Inc. | 30,500 | $60.1K | 0.00% | 00.0% | Unchanged |
| Commonwealth Equity Services, LLC | 28,410 | $56.0K | 0.00% | −5,300−15.7% | Reduced |
| Two Sigma Securities, LLC | 26,878 | $53.0K | 0.00% | +26,878 | New |
| New York State Common Retirement Fund | 25,983 | $51.2K | 0.00% | −104−0.4% | Reduced |
| Guidance Point Advisors, LLC | 25,742 | $50.7K | 0.02% | 00.0% | Unchanged |
| Shay Capital LLC | 25,662 | $50.6K | 0.01% | −3,676−12.5% | Reduced |
| Susquehanna International Group, LLP | 25,426 | $50.1K | 0.00% | −81,019−76.1% | Reduced |
| Wealth Management Associates, Inc. | 38,050 | $40.0K | 0.02% | +17,950+89.3% | Added |
| STRS Ohio | 20,000 | $39.0K | 0.00% | −1,300−6.1% | Reduced |
| Citigroup Inc | 19,331 | $38.1K | 0.00% | +4,155+27.4% | Added |
| ProShare Advisors LLC | 18,280 | $36.0K | 0.00% | +1,440+8.6% | Added |
| DLK Investment Management, LLC | 17,000 | $33.5K | 0.01% | 00.0% | Unchanged |
| HSBC Holdings PLC | 16,260 | $32.0K | 0.00% | +16,260 | New |
| Flagship Private Wealth, LLC | 14,158 | $27.9K | 0.02% | 00.0% | Unchanged |
| Simplicity Wealth,LLC | 14,090 | $27.8K | 0.00% | +14,090 | New |
| Bleakley Financial Group, LLC | 14,090 | $27.8K | 0.00% | +14,090 | New |
| Public Employees Retirement System of Ohio | 13,800 | $27.2K | 0.00% | +13,800 | New |
| Procyon Private Wealth Partners, LLC | 13,671 | $26.9K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 13,125 | $25.9K | 0.00% | −259−1.9% | Reduced |
| Round Rock Advisors, LLC | 11,855 | $23.4K | 0.01% | −2,080−14.9% | Reduced |
| Stratos Wealth Advisors, LLC | 11,810 | $23.3K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 11,752 | $23.2K | 0.00% | +6,925+143.5% | Added |
| Leonteq Securities AG | 11,000 | $21.7K | 0.00% | −300−2.7% | Reduced |
| GWM Advisors LLC | 10,637 | $21.0K | 0.00% | −3,105−22.6% | Reduced |
| Buckingham Strategic Wealth, LLC | 10,388 | $20.5K | 0.00% | +10,388 | New |
| California State Teachers Retirement System | 10,230 | $20.2K | 0.00% | −6,517−38.9% | Reduced |
| TriaGen Wealth Management LLC | 10,000 | $19.7K | 0.01% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,906 | $19.5K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,294 | $18.3K | 0.00% | 00.0% | Unchanged |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 8,048 | $15.9K | 0.00% | +8,048 | New |
| FMR LLC | 4,295 | $8.46K | 0.00% | −993−18.8% | Reduced |
| Amalgamated Bank | 3,170 | $6.00K | 0.00% | −5,337−62.7% | Reduced |
| Steward Partners Investment Advisory, LLC | 2,500 | $4.92K | 0.00% | +1,500+150.0% | Added |
| Metropolitan Life Insurance Co | 2,108 | $4.15K | 0.00% | +480+29.5% | Added |
| Royal Bank of Canada | 2,324 | $4.00K | 0.00% | −29,520−92.7% | Reduced |
| Archer Investment Corp | 1,399 | $2.76K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 836 | $1.65K | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 697 | $1.37K | 0.00% | −194−21.8% | Reduced |
| Comerica Bank | 513 | $1.01K | 0.00% | 00.0% | Unchanged |
| Eagle Bay Advisors LLC | 277 | $546 | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 300 | $534 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 163 | $321 | 0.00% | +125+328.9% | Added |
| Russell Investments Group, Ltd. | 143 | $282 | 0.00% | +143 | New |
| FSA Wealth Management LLC | 100 | $197 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 50 | $99 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 16 | $32 | 0.00% | −87,425−100.0% | Reduced |
| CWM, LLC | 9 | $0 | 0.00% | −398−97.8% | Reduced |
| TIG Advisors, LLC | 0 | $0 | 0.00% | −82,577−100.0% | Sold out |
| Cookson Peirce & Co Inc | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −45,313−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −29,040−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −17,515−100.0% | Sold out |