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, Q4 2023
Institutional positions in Quantum-Si Inc as of Dec 31, 2023. 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
- 91
- −3 vs. Q3 2023
- Shares held
- 56.6M
- +2.06M (+3.8%) vs. Q3 2023
- Total value
- $113.6M
- +$23.1M (+25.6%) vs. Q3 2023
- New holders
- 10
- 27 more added
- Sold out
- 13
- 28 more reduced
2 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 15,519,322 | $31.2M | 0.18% | +1,071,105+7.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 8,532,917 | $17.2M | 0.01% | 00.0% | Unchanged |
| Nikko Asset Management Americas, Inc. | 8,532,917 | $17.1M | 0.16% | 00.0% | Unchanged |
| BlackRock Inc. | 7,383,571 | $14.8M | 0.00% | +370,542+5.3% | Added |
| Vanguard Group Inc | 5,218,222 | $10.5M | 0.00% | +53,026+1.0% | Added |
| State Street Corp | 2,209,837 | $4.44M | 0.00% | +16,419+0.7% | Added |
| Geode Capital Management, LLC | 2,123,452 | $4.27M | 0.00% | +101,858+5.0% | Added |
| Northern Trust Corp | 824,387 | $1.66M | 0.00% | +1,625+0.2% | Added |
| Fosun International Ltd | 743,935 | $1.50M | 0.30% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 406,700 | $817.5K | 0.02% | +50,000+14.0% | Added |
| Bank of New York Mellon Corp | 342,382 | $688.2K | 0.00% | −4,574−1.3% | Reduced |
| Knollwood Investment Advisory, LLC | 300,000 | $603.0K | 0.13% | 00.0% | Unchanged |
| General American Investors Co Inc | 294,350 | $591.6K | 0.05% | +175,100+146.8% | Added |
| Nuveen Asset Management, LLC | 289,535 | $582.0K | 0.00% | +650+0.2% | Added |
| Guggenheim Capital LLC | 289,473 | $581.8K | 0.00% | −129,893−31.0% | Reduced |
| Charles Schwab Investment Management Inc | 260,595 | $523.8K | 0.00% | −16,360−5.9% | Reduced |
| Morgan Stanley | 243,275 | $489.0K | 0.00% | −27,792−10.3% | Reduced |
| Bank of America Corp | 189,822 | $381.5K | 0.00% | +47,341+33.2% | Added |
| Invesco Ltd. | 187,934 | $377.7K | 0.00% | +8,740+4.9% | Added |
| Barclays PLC | 169,608 | $340.9K | 0.00% | +121,670+253.8% | Added |
| Neumann Advisory Hong Kong Ltd | 166,198 | $334.0K | 0.13% | 00.0% | Unchanged |
| Rhumbline Advisers | 140,771 | $282.9K | 0.00% | −2,069−1.4% | Reduced |
| Green Alpha Advisors, LLC | 131,785 | $264.9K | 0.19% | +89,163+209.2% | Added |
| Citadel Advisors LLC | 125,130 | $251.5K | 0.00% | +125,130 | New |
| Pathstone Holdings, LLC | 115,742 | $232.6K | 0.00% | +115,742 | New |
| UBS Group AG | 111,189 | $223.5K | 0.00% | +50,964+84.6% | Added |
| Susquehanna International Group, LLP | 106,445 | $214.0K | 0.00% | −13,851−11.5% | Reduced |
| Goldman Sachs Group Inc | 106,078 | $213.2K | 0.00% | −63,236−37.3% | Reduced |
| Tower Research Capital LLC (TRC) | 87,441 | $175.8K | 0.00% | +61,574+238.0% | Added |
| TIG Advisors, LLC | 82,577 | $166.0K | 0.02% | +82,577 | New |
| Two Sigma Investments, LP | 75,891 | $152.5K | 0.00% | −6,900−8.3% | Reduced |
| JPMorgan Chase & Co | 69,049 | $138.8K | 0.00% | −23,011−25.0% | Reduced |
| Alliancebernstein L.P. | 55,200 | $111.0K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 53,782 | $109.0K | 0.00% | +1,737+3.3% | Added |
| MetLife Investment Management | 53,683 | $107.9K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 50,573 | $101.7K | 0.00% | −204−0.4% | Reduced |
| Cookson Peirce & Co Inc | 50,000 | $101.0K | 0.01% | +50,000 | New |
| Wells Fargo & Company | 48,458 | $97.4K | 0.00% | +6,182+14.6% | Added |
| HRT Financial LP | 45,313 | $91.0K | 0.00% | +45,313 | New |
| Voya Investment Management LLC | 44,607 | $89.7K | 0.00% | +2,866+6.9% | Added |
| Principal Financial Group Inc | 43,301 | $87.0K | 0.00% | −4,459−9.3% | Reduced |
| Manufacturers Life Insurance Company, The | 42,874 | $86.2K | 0.00% | −3,852−8.2% | Reduced |
| Deutsche Bank AG | 42,865 | $86.2K | 0.00% | −4,834−10.1% | Reduced |
| Red Wave Investments LLC | 37,000 | $74.4K | 0.03% | 00.0% | Unchanged |
| Commonwealth Equity Services, LLC | 33,710 | $68.0K | 0.00% | +16,936+101.0% | Added |
| Cambridge Investment Research Advisors, Inc. | 33,355 | $67.0K | 0.00% | +2,750+9.0% | Added |
| Royal Bank of Canada | 31,844 | $64.0K | 0.00% | +14,711+85.9% | Added |
| Raymond James Financial Services Advisors, Inc. | 30,500 | $61.3K | 0.00% | 00.0% | Unchanged |
| Shay Capital LLC | 29,338 | $59.0K | 0.02% | +9,801+50.2% | Added |
| State Board of Administration of Florida Retirement System | 29,040 | $58.4K | 0.00% | −6,596−18.5% | Reduced |
| New York State Common Retirement Fund | 26,087 | $52.4K | 0.00% | −185−0.7% | Reduced |
| Guidance Point Advisors, LLC | 25,742 | $51.7K | 0.02% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 23,400 | $47.0K | 0.00% | +4,000+20.6% | Added |
| STRS Ohio | 21,300 | $42.0K | 0.00% | 00.0% | Unchanged |
| Wealth Management Associates, Inc. | 20,100 | $40.4K | 0.02% | +2,200+12.3% | Added |
| Squarepoint Ops LLC | 17,515 | $35.2K | 0.00% | +17,515 | New |
| GTS Securities LLC | 17,476 | $35.1K | 0.00% | +17,476 | New |
| SG Americas Securities, LLC | 17,341 | $35.0K | 0.00% | −29,225−62.8% | Reduced |
| DLK Investment Management, LLC | 17,000 | $34.2K | 0.02% | +17,000 | New |
| ProShare Advisors LLC | 16,840 | $33.8K | 0.00% | −4,339−20.5% | Reduced |
| California State Teachers Retirement System | 16,747 | $33.7K | 0.00% | −5,703−25.4% | Reduced |
| Citigroup Inc | 15,176 | $30.5K | 0.00% | +13,548+832.2% | Added |
| Ameriprise Financial Inc | 14,300 | $28.7K | 0.00% | −9,444−39.8% | Reduced |
| Flagship Private Wealth, LLC | 14,158 | $28.5K | 0.02% | 00.0% | Unchanged |
| Round Rock Advisors, LLC | 13,935 | $28.0K | 0.01% | −7,950−36.3% | Reduced |
| Procyon Private Wealth Partners, LLC | 13,671 | $27.5K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 13,384 | $26.9K | 0.00% | +2,544+23.5% | Added |
| GWM Advisors LLC | 13,742 | $25.7K | 0.00% | −4,000−22.5% | Reduced |
| Jane Street Group, LLC | 12,214 | $24.6K | 0.00% | −15,571−56.0% | Reduced |
| Stratos Wealth Advisors, LLC | 11,810 | $23.7K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 11,300 | $22.7K | 0.00% | +3,800+50.7% | Added |
| Wolverine Trading, LLC | 10,399 | $20.9K | 0.00% | +10,399 | New |
| TriaGen Wealth Management LLC | 10,000 | $20.1K | 0.01% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,906 | $19.9K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,294 | $18.6K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 8,507 | $17.0K | 0.00% | −943−10.0% | Reduced |
| FMR LLC | 5,288 | $10.6K | 0.00% | −1,459−21.6% | Reduced |
| Advisor Group Holdings, Inc. | 4,827 | $9.70K | 0.00% | −549−10.2% | Reduced |
| Level Financial Advisors, Inc. | 2,500 | $5.03K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 1,628 | $3.27K | 0.00% | −3,942−70.8% | Reduced |
| Archer Investment Corp | 1,399 | $2.81K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 1,000 | $2.01K | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 891 | $1.79K | 0.00% | +891 | New |
| Allworth Financial LP | 836 | $1.68K | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 513 | $1.03K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 407 | $1.00K | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 300 | $564 | 0.00% | 00.0% | Unchanged |
| Eagle Bay Advisors LLC | 277 | $557 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 50 | $100 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 38 | $76 | 0.00% | −6−13.6% | Reduced |
| FSA Wealth Management LLC | 100 | $0 | 0.00% | −11,050−99.1% | Reduced |
| Putnam Investments LLC | 0 | $0 | 0.00% | −157,589−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −62,058−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −35,358−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −28,169−100.0% | Sold out |
| Pitcairn Co | 0 | $0 | 0.00% | −11,792−100.0% | Sold out |
| Neuberger Berman Group LLC | 0 | $0 | 0.00% | −11,330−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −11,263−100.0% | Sold out |
| China Universal Asset Management Co., Ltd. | 0 | $0 | 0.00% | −3,127−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −800−100.0% | Sold out |