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 2022
Institutional positions in Quantum-Si Inc as of Mar 31, 2022. 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
- 92
- 0 vs. Q4 2021
- Shares held
- 45.9M
- −1.20M (−2.5%) vs. Q4 2021
- Total value
- $215.0M
- −$155.6M (−42.0%) vs. Q4 2021
- New holders
- 20
- 32 more added
- Sold out
- 20
- 21 more reduced
1 institution that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2021: 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 2022
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 13,373,557 | $62.6M | 0.26% | +306,407+2.3% | Added |
| Glenview Capital Management, LLC | 5,778,299 | $27.0M | 0.55% | −221,701−3.7% | Reduced |
| Foresite Capital Management IV, LLC | 4,463,619 | $20.9M | 5.84% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,934,007 | $18.4M | 0.00% | +2,134,692+118.6% | Added |
| Foresite Capital Management V, LLC | 2,342,061 | $11.0M | 4.48% | 00.0% | Unchanged |
| Foresite Capital Opportunity Management V, LLC | 1,598,125 | $7.48M | 10.47% | 00.0% | Unchanged |
| BlackRock Inc. | 1,562,495 | $7.31M | 0.00% | +29,793+1.9% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,400,000 | $6.55M | 0.15% | 00.0% | Unchanged |
| Nikko Asset Management Americas, Inc. | 1,213,029 | $5.68M | 0.04% | −94,391−7.2% | Reduced |
| Price T Rowe Associates Inc | 1,209,736 | $5.66M | 0.00% | −1,149,514−48.7% | Reduced |
| Geode Capital Management, LLC | 797,207 | $3.73M | 0.00% | +30,297+4.0% | Added |
| Goldman Sachs Group Inc | 787,786 | $3.69M | 0.00% | +261,903+49.8% | Added |
| Fosun International Ltd | 743,935 | $3.48M | 0.30% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 723,727 | $3.39M | 0.02% | −21,442−2.9% | Reduced |
| Rubric Capital Management LP | 672,385 | $3.15M | 0.15% | 00.0% | Unchanged |
| Millennium Management LLC | 618,289 | $2.89M | 0.00% | +618,289 | New |
| Neumann Advisory Hong Kong Ltd | 462,733 | $2.17M | 0.48% | −30,000−6.1% | Reduced |
| Alyeska Investment Group, L.P. | 456,978 | $2.14M | 0.02% | −44,778−8.9% | Reduced |
| Susquehanna International Group, LLP | 450,850 | $2.11M | 0.00% | +340,252+307.6% | Added |
| State Street Corp | 401,715 | $1.88M | 0.00% | +10,901+2.8% | Added |
| ExodusPoint Capital Management, LP | 213,552 | $999.0K | 0.01% | +190,018+807.4% | Added |
| Cubist Systematic Strategies, LLC | 196,705 | $921.0K | 0.01% | +90,269+84.8% | Added |
| Swiss National Bank | 194,500 | $910.0K | 0.00% | +15,100+8.4% | Added |
| Northern Trust Corp | 164,881 | $772.0K | 0.00% | −3,997−2.4% | Reduced |
| Ikarian Capital, LLC | 157,363 | $736.0K | 0.22% | +12,957+9.0% | Added |
| Manufacturers Life Insurance Company, The | 113,007 | $565.0K | 0.00% | +113,007 | New |
| TD Asset Management Inc | 110,662 | $518.0K | 0.00% | −40,000−26.5% | Reduced |
| Morgan Stanley | 103,022 | $481.0K | 0.00% | +18,486+21.9% | Added |
| D.A. Davidson & Co. | 102,500 | $480.0K | 0.01% | +82,500+412.5% | Added |
| Squarepoint Ops LLC | 95,080 | $445.0K | 0.00% | +74,508+362.2% | Added |
| Clearline Capital LP | 92,468 | $433.0K | 0.06% | +12,988+16.3% | Added |
| UBS Asset Management Americas Inc | 82,500 | $386.1K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Services Advisors, Inc. | 81,830 | $383.0K | 0.00% | +51,386+168.8% | Added |
| California State Teachers Retirement System | 69,618 | $326.0K | 0.00% | +767+1.1% | Added |
| Jane Street Group, LLC | 68,248 | $319.0K | 0.00% | +68,248 | New |
| Westchester Capital Management, LLC | 64,964 | $304.0K | 0.01% | 00.0% | Unchanged |
| HRT Financial LP | 63,057 | $295.0K | 0.00% | −200,257−76.1% | Reduced |
| Balyasny Asset Management LLC | 60,807 | $285.0K | 0.00% | +60,807 | New |
| Royal Bank of Canada | 59,172 | $277.0K | 0.00% | +26,383+80.5% | Added |
| Credit Suisse AG | 51,613 | $241.0K | 0.00% | +3,409+7.1% | Added |
| Intrepid Family Office LLC | 50,000 | $234.0K | 0.38% | −25,000−33.3% | Reduced |
| Bank of America Corp | 49,192 | $230.0K | 0.00% | +23,647+92.6% | Added |
| Citadel Advisors LLC | 41,685 | $195.0K | 0.00% | +20,271+94.7% | Added |
| Red Wave Investments LLC | 37,000 | $173.0K | 0.06% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 32,200 | $151.0K | 0.00% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 32,018 | $150.0K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 31,838 | $149.0K | 0.00% | +31,838 | New |
| Tower Research Capital LLC (TRC) | 29,825 | $140.0K | 0.00% | +28,167+1,698.9% | Added |
| Guidance Point Advisors, LLC | 25,742 | $120.0K | 0.05% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 24,957 | $117.0K | 0.00% | +1,700+7.3% | Added |
| Citigroup Inc | 24,938 | $117.0K | 0.00% | +19,830+388.2% | Added |
| Wells Fargo & Company | 24,840 | $116.0K | 0.00% | +2,200+9.7% | Added |
| Mutual Advisors, LLC | 22,544 | $106.0K | 0.01% | +22,544 | New |
| Arizona State Retirement System | 22,229 | $104.0K | 0.00% | +287+1.3% | Added |
| Janus Henderson Group PLC | 21,967 | $102.0K | 0.00% | +100.0% | Added |
| Legal & General Group Plc | 19,560 | $91.0K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 18,886 | $88.0K | 0.00% | −13,245−41.2% | Reduced |
| Dynamic Technology Lab Private Ltd | 17,982 | $84.0K | 0.01% | +5,356+42.4% | Added |
| Teacher Retirement System of Texas | 16,941 | $79.0K | 0.00% | +1,404+9.0% | Added |
| AQR Capital Management LLC | 16,434 | $77.0K | 0.00% | +16,434 | New |
| Sciencast Management LP | 17,300 | $76.0K | 0.02% | +17,300 | New |
| UBS Group AG | 15,685 | $74.0K | 0.00% | −10,361−39.8% | Reduced |
| Raymond James & Associates | 15,000 | $70.0K | 0.00% | +15,000 | New |
| JPMorgan Chase & Co | 14,170 | $67.0K | 0.00% | +3,379+31.3% | Added |
| Old Mission Capital LLC | 13,862 | $65.0K | 0.00% | +13,862 | New |
| Procyon Private Wealth Partners, LLC | 13,671 | $64.0K | 0.01% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 13,733 | $64.0K | 0.00% | +3,481+34.0% | Added |
| Boothbay Fund Management, LLC | 13,526 | $63.0K | 0.00% | 00.0% | Unchanged |
| Principal Financial Group Inc | 13,196 | $62.0K | 0.00% | −743−5.3% | Reduced |
| Abacus Planning Group, Inc. | 12,510 | $59.0K | 0.02% | 00.0% | Unchanged |
| ProShare Advisors LLC | 12,158 | $57.0K | 0.00% | −4,385−26.5% | Reduced |
| Virtu Financial LLC | 11,716 | $55.0K | 0.00% | −31,721−73.0% | Reduced |
| Two Sigma Securities, LLC | 10,826 | $51.0K | 0.01% | +10,826 | New |
| MTM Investment Management, LLC | 10,775 | $50.0K | 0.02% | +10,775 | New |
| PEAK6 Investments LLC | 8,263 | $39.0K | 0.00% | +8,263 | New |
| Leonteq Securities AG | 7,500 | $34.0K | 0.00% | +7,500 | New |
| Captrust Financial Advisors | 5,970 | $28.0K | 0.00% | +5,970 | New |
| Penserra Capital Management LLC | 4,345 | $20.0K | 0.00% | −1,090−20.1% | Reduced |
| Advisor Group Holdings, Inc. | 3,160 | $15.0K | 0.00% | −738−18.9% | Reduced |
| TD Waterhouse Canada Inc. | 2,025 | $9.88K | 0.00% | 00.0% | Unchanged |
| Wolff Wiese Magana LLC | 1,400 | $7.00K | 0.00% | −600−30.0% | Reduced |
| Ovata Capital Management Ltd | 1,400 | $7.00K | 0.00% | +1,400 | New |
| IFP Advisors, Inc | 600 | $6.00K | 0.00% | +600 | New |
| US Bancorp | 800 | $4.00K | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 450 | $2.11K | 0.00% | −1,000−69.0% | Reduced |
| Quantbot Technologies LP | 500 | $2.00K | 0.00% | −1,594−76.1% | Reduced |
| First Manhattan Co | 600 | $2.00K | 0.00% | +200+50.0% | Added |
| Daiwa Securities Group Inc. | 343 | $2.00K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 400 | $2.00K | 0.00% | +400 | New |
| Koshinski Asset Management, Inc. | 200 | $936 | 0.00% | +200 | New |
| Cutler Group LP | 170 | $0 | 0.00% | −130−43.3% | Reduced |
| Hantz Financial Services, Inc. | 30 | $0 | 0.00% | +30 | New |
| Capital International Investors | 0 | $0 | 0.00% | −2,500,000−100.0% | Sold out |
| Sumitomo Mitsui Trust Holdings, Inc. | 0 | $0 | 0.00% | −1,307,420−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −77,816−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −61,794−100.0% | Sold out |
| Asset Management Corp | 0 | $0 | 0.00% | −31,011−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −23,634−100.0% | Sold out |
| Private Advisor Group, LLC | 0 | $0 | 0.00% | −23,385−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −22,975−100.0% | Sold out |