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