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 |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 12,409,929 | $13.0M | 0.12% | −358,947−2.8% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 7,863,161 | $8.26M | 0.01% | −191,342−2.4% | Reduced |
| Nikko Asset Management Americas, Inc. | 7,863,161 | $8.10M | 0.09% | −191,342−2.4% | Reduced |
| BlackRock Inc. | 7,000,884 | $7.35M | 0.00% | −231,111−3.2% | Reduced |
| Vanguard Group Inc | 4,948,362 | $5.20M | 0.00% | −352,323−6.6% | Reduced |
| State Street Corp | 2,371,351 | $2.49M | 0.00% | +211,542+9.8% | Added |
| Geode Capital Management, LLC | 2,171,830 | $2.28M | 0.00% | +37,801+1.8% | Added |
| Jacobs Levy Equity Management, Inc | 942,762 | $989.9K | 0.00% | +436,065+86.1% | Added |
| Northern Trust Corp | 782,190 | $821.3K | 0.00% | −40,149−4.9% | Reduced |
| Fosun International Ltd | 743,935 | $781.1K | 0.26% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 565,080 | $593.3K | 0.00% | +244,383+76.2% | Added |
| Bridgeway Capital Management, LLC | 406,700 | $427.0K | 0.01% | 00.0% | Unchanged |
| Millennium Management LLC | 374,727 | $393.5K | 0.00% | +184,940+97.4% | Added |
| Bank of New York Mellon Corp | 322,460 | $338.6K | 0.00% | +10,811+3.5% | Added |
| Jane Street Group, LLC | 304,056 | $319.3K | 0.00% | +152,933+101.2% | Added |
| Knollwood Investment Advisory, LLC | 300,000 | $315.0K | 0.04% | 00.0% | Unchanged |
| General American Investors Co Inc | 294,350 | $309.1K | 0.02% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 260,442 | $273.5K | 0.00% | −1,033−0.4% | Reduced |
| Guggenheim Capital LLC | 253,274 | $265.9K | 0.00% | −24,545−8.8% | Reduced |
| Citadel Advisors LLC | 226,300 | $237.6K | 0.00% | +133,300+143.3% | Added |
| Goldman Sachs Group Inc | 189,170 | $198.6K | 0.00% | +95,304+101.5% | Added |
| Gsa Capital Partners LLP | 182,277 | $191.0K | 0.01% | +182,277 | New |
| Morgan Stanley | 170,535 | $179.1K | 0.00% | −57,132−25.1% | Reduced |
| Rhumbline Advisers | 145,199 | $152.5K | 0.00% | +465+0.3% | Added |
| Shay Capital LLC | 138,260 | $145.2K | 0.04% | +112,598+438.8% | Added |
| Susquehanna International Group, LLP | 135,088 | $141.8K | 0.00% | +109,662+431.3% | Added |
| Green Alpha Advisors, LLC | 129,259 | $135.7K | 0.11% | −5,357−4.0% | Reduced |
| Ameriprise Financial Inc | 125,757 | $132.0K | 0.00% | +82,157+188.4% | Added |
| Verition Fund Management LLC | 121,800 | $127.9K | 0.00% | +121,800 | New |
| Pathstone Holdings, LLC | 115,256 | $121.0K | 0.00% | −191−0.2% | Reduced |
| Virtu Financial LLC | 101,301 | $106.0K | 0.01% | +51,313+102.7% | Added |
| Two Sigma Investments, LP | 89,261 | $93.7K | 0.00% | −43,295−32.7% | Reduced |
| Alliancebernstein L.P. | 76,080 | $79.9K | 0.00% | +20,880+37.8% | Added |
| Wells Fargo & Company | 68,703 | $72.1K | 0.00% | +15,633+29.5% | Added |
| UBS Group AG | 67,227 | $70.6K | 0.00% | −35,933−34.8% | Reduced |
| Barclays PLC | 63,388 | $66.6K | 0.00% | −37,967−37.5% | Reduced |
| Bank of America Corp | 62,410 | $65.5K | 0.00% | +5,608+9.9% | Added |
| Public Employees Retirement System of Ohio | 60,526 | $63.6K | 0.00% | +46,726+338.6% | Added |
| Price T Rowe Associates Inc | 59,727 | $63.0K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 53,878 | $56.6K | 0.00% | +53,878 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 52,064 | $54.7K | 0.00% | +52,064 | New |
| JPMorgan Chase & Co | 43,659 | $45.8K | 0.00% | +1,377+3.3% | Added |
| Wealth Management Associates, Inc. | 38,050 | $40.0K | 0.02% | 00.0% | Unchanged |
| Red Wave Investments LLC | 37,000 | $38.9K | 0.01% | 00.0% | Unchanged |
| Invesco Ltd. | 35,186 | $36.9K | 0.00% | −4,888−12.2% | Reduced |
| Neumann Advisory Hong Kong Ltd | 33,803 | $35.0K | 0.02% | −132,395−79.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 33,355 | $35.0K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 33,103 | $34.8K | 0.00% | −1,597−4.6% | Reduced |
| Voya Investment Management LLC | 32,867 | $34.5K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 32,560 | $34.2K | 0.00% | −8,400−20.5% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 30,930 | $32.5K | 0.00% | +430+1.4% | Added |
| Two Sigma Advisers, LP | 30,700 | $32.2K | 0.00% | 00.0% | Unchanged |
| Arlington Trust Co LLC | 27,500 | $28.9K | 0.01% | +27,500 | New |
| ProShare Advisors LLC | 27,256 | $28.6K | 0.00% | +8,976+49.1% | Added |
| D. E. Shaw & Co., Inc. | 26,500 | $27.8K | 0.00% | +26,500 | New |
| New York State Common Retirement Fund | 26,084 | $27.4K | 0.00% | +101+0.4% | Added |
| Guidance Point Advisors, LLC | 25,742 | $27.0K | 0.01% | 00.0% | Unchanged |
| Dynamic Technology Lab Private Ltd | 26,060 | $27.0K | 0.00% | +26,060 | New |
| XTX Topco Ltd | 24,161 | $25.4K | 0.00% | +24,161 | New |
| Citigroup Inc | 23,392 | $24.6K | 0.00% | +4,061+21.0% | Added |
| Commonwealth Equity Services, LLC | 22,410 | $24.0K | 0.00% | −6,000−21.1% | Reduced |
| Davy Global Fund Management Ltd | 21,556 | $22.6K | 0.00% | +21,556 | New |
| Tower Research Capital LLC (TRC) | 20,350 | $21.4K | 0.00% | +20,334+127,087.5% | Added |
| STRS Ohio | 20,000 | $21.0K | 0.00% | 00.0% | Unchanged |
| Bayesian Capital Management, LP | 19,096 | $20.1K | 0.00% | +19,096 | New |
| DLK Investment Management, LLC | 19,000 | $19.9K | 0.01% | +2,000+11.8% | Added |
| Principal Financial Group Inc | 16,462 | $17.3K | 0.00% | −24,565−59.9% | Reduced |
| Wolverine Trading, LLC | 14,705 | $15.4K | 0.00% | +14,705 | New |
| Flagship Private Wealth, LLC | 14,158 | $14.9K | 0.01% | 00.0% | Unchanged |
| Procyon Private Wealth Partners, LLC | 13,671 | $14.4K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 12,474 | $13.1K | 0.00% | −651−5.0% | Reduced |
| Stratos Wealth Advisors, LLC | 11,810 | $12.4K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 11,698 | $12.3K | 0.00% | +11,698 | New |
| HSBC Holdings PLC | 11,932 | $11.8K | 0.00% | −4,328−26.6% | Reduced |
| Leonteq Securities AG | 11,000 | $11.6K | 0.00% | 00.0% | Unchanged |
| TownSquare Capital, LLC | 10,970 | $11.5K | 0.00% | +10,970 | New |
| GWM Advisors LLC | 10,824 | $11.4K | 0.00% | +187+1.8% | Added |
| Advisor Group Holdings, Inc. | 10,752 | $11.3K | 0.00% | −1,000−8.5% | Reduced |
| Eqis Capital Management, Inc. | 10,422 | $10.9K | 0.00% | +10,422 | New |
| TriaGen Wealth Management LLC | 10,000 | $10.5K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,906 | $10.4K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 9,463 | $10.0K | 0.00% | +7,139+307.2% | Added |
| Legal & General Group Plc | 9,294 | $9.76K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 7,257 | $7.62K | 0.00% | −2,973−29.1% | Reduced |
| Archer Investment Corp | 3,399 | $3.57K | 0.00% | +2,000+143.0% | Added |
| Russell Investments Group, Ltd. | 3,234 | $3.40K | 0.00% | +3,091+2,161.5% | Added |
| Amalgamated Bank | 3,170 | $3.00K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 2,000 | $2.10K | 0.00% | −500−20.0% | Reduced |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 1,357 | $1.42K | 0.00% | −6,691−83.1% | Reduced |
| FMR LLC | 939 | $986 | 0.00% | −3,356−78.1% | Reduced |
| Allworth Financial LP | 836 | $862 | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 584 | $613 | 0.00% | −113−16.2% | Reduced |
| Eagle Bay Advisors LLC | 277 | $291 | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 300 | $280 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 125 | $131 | 0.00% | −38−23.3% | Reduced |
| Planning Capital Management Corp | 115 | $121 | 0.00% | +115 | New |
| Rothschild Investment LLC | 75 | $79 | 0.00% | +75 | New |
| Federation des caisses Desjardins du Quebec | 50 | $53 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 168 | $0 | 0.00% | +159+1,766.7% | Added |
| MetLife Investment Management | 0 | $0 | 0.00% | −41,352−100.0% | Sold out |