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 2024
Institutional positions in Quantum-Si Inc as of Dec 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
- 121
- +15 vs. Q3 2024
- Shares held
- 53.7M
- +1.63M (+3.1%) vs. Q3 2024
- Total value
- $144.8M
- +$99.0M (+215.7%) vs. Q3 2024
- New holders
- 35
- 42 more added
- Sold out
- 20
- 22 more reduced
1 institution that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 8,848,650 | $23.9M | 0.20% | −2,993,959−25.3% | Reduced |
| BlackRock, Inc. | 8,437,647 | $22.8M | 0.00% | +1,537,520+22.3% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 5,965,208 | $16.1M | 0.01% | −1,582,704−21.0% | Reduced |
| Nikko Asset Management Americas, Inc. | 5,965,208 | $16.0M | 0.17% | −1,562,704−20.8% | Reduced |
| Vanguard Group Inc | 5,491,753 | $14.8M | 0.00% | +454,495+9.0% | Added |
| Morgan Stanley | 3,480,468 | $9.40M | 0.00% | +3,174,221+1,036.5% | Added |
| State Street Corp | 2,405,019 | $6.49M | 0.00% | +135,981+6.0% | Added |
| Geode Capital Management, LLC | 2,368,376 | $6.40M | 0.00% | +51,455+2.2% | Added |
| Susquehanna International Group, LLP | 1,002,873 | $2.71M | 0.00% | +958,844+2,177.8% | Added |
| Goldman Sachs Group Inc | 1,002,130 | $2.71M | 0.00% | +759,992+313.9% | Added |
| Northern Trust Corp | 841,146 | $2.27M | 0.00% | +40,026+5.0% | Added |
| Fosun International Ltd | 743,935 | $2.01M | 0.63% | 00.0% | Unchanged |
| UBS Group AG | 592,112 | $1.60M | 0.00% | +542,946+1,104.3% | Added |
| Renaissance Technologies LLC | 544,956 | $1.47M | 0.00% | +503,400+1,211.4% | Added |
| Gsa Capital Partners LLP | 374,278 | $1.01M | 0.07% | +261,961+233.2% | Added |
| Nuveen Asset Management, LLC | 319,100 | $861.6K | 0.00% | −245,980−43.5% | Reduced |
| Charles Schwab Investment Management Inc | 308,021 | $831.7K | 0.00% | +75,661+32.6% | Added |
| Simplex Trading, LLC | 306,769 | $828.0K | 0.02% | +280,270+1,057.7% | Added |
| Knollwood Investment Advisory, LLC | 300,000 | $810.0K | 0.08% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 296,100 | $799.5K | 0.02% | −110,600−27.2% | Reduced |
| Bank of New York Mellon Corp | 269,807 | $728.5K | 0.00% | +47,400+21.3% | Added |
| XTX Topco Ltd | 245,585 | $663.1K | 0.06% | +201,773+460.5% | Added |
| Shay Capital LLC | 216,546 | $584.7K | 0.14% | +78,376+56.7% | Added |
| Guggenheim Capital LLC | 199,999 | $540.0K | 0.00% | −42,455−17.5% | Reduced |
| Green Alpha Advisors, LLC | 158,858 | $428.9K | 0.34% | −16,197−9.3% | Reduced |
| Two Sigma Investments, LP | 152,683 | $412.2K | 0.00% | +152,683 | New |
| Barclays PLC | 150,616 | $406.7K | 0.00% | −46,210−23.5% | Reduced |
| Rhumbline Advisers | 148,946 | $402.1K | 0.00% | +5,298+3.7% | Added |
| Centiva Capital, LP | 143,176 | $386.6K | 0.01% | +143,176 | New |
| Wolverine Trading, LLC | 111,935 | $372.7K | 0.01% | +98,373+725.4% | Added |
| Pathstone Holdings, LLC | 128,584 | $347.2K | 0.00% | −15,209−10.6% | Reduced |
| Bank of America Corp | 111,871 | $302.1K | 0.00% | +13,186+13.4% | Added |
| Price T Rowe Associates Inc | 109,114 | $295.0K | 0.00% | +11,787+12.1% | Added |
| AQR Capital Management LLC | 102,398 | $276.5K | 0.00% | +76,504+295.5% | Added |
| Citigroup Inc | 90,248 | $243.7K | 0.00% | +5,646+6.7% | Added |
| FMR LLC | 80,321 | $216.9K | 0.00% | +59,210+280.5% | Added |
| Alliancebernstein L.P. | 76,080 | $205.4K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 71,980 | $194.3K | 0.00% | +8,802+13.9% | Added |
| SG Americas Securities, LLC | 67,588 | $182.0K | 0.00% | +7,470+12.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 57,006 | $153.9K | 0.00% | −569−1.0% | Reduced |
| Intech Investment Management LLC | 50,837 | $137.3K | 0.00% | +50,837 | New |
| Corebridge Financial, Inc. | 49,790 | $134.4K | 0.00% | −3,758−7.0% | Reduced |
| JPMorgan Chase & Co | 44,857 | $121.1K | 0.00% | −184−0.4% | Reduced |
| Belvedere Trading LLC | 41,053 | $110.8K | 0.01% | +41,053 | New |
| Cambridge Investment Research Advisors, Inc. | 38,867 | $105.0K | 0.00% | −9,355−19.4% | Reduced |
| Invesco Ltd. | 37,321 | $100.8K | 0.00% | +3,956+11.9% | Added |
| Red Wave Investments LLC | 37,000 | $99.9K | 0.03% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 36,330 | $98.1K | 0.00% | +36,330 | New |
| Wealth Management Associates, Inc. | 35,050 | $94.6K | 0.04% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 34,850 | $94.1K | 0.00% | +34,850 | New |
| Winton Group Ltd | 34,610 | $93.4K | 0.01% | +34,610 | New |
| Axq Capital, LP | 34,067 | $92.0K | 0.04% | +34,067 | New |
| Davy Global Fund Management Ltd | 33,902 | $91.5K | 0.01% | +7,704+29.4% | Added |
| Mariner, LLC | 33,439 | $90.3K | 0.00% | +7,540+29.1% | Added |
| SEI Investments Co | 33,103 | $89.4K | 0.00% | 00.0% | Unchanged |
| Thoroughbred Financial Services, LLC | 33,000 | $89.0K | 0.01% | +33,000 | New |
| Deutsche Bank AG | 32,560 | $87.9K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 31,134 | $84.1K | 0.00% | +31,134 | New |
| Commonwealth Equity Services, LLC | 31,013 | $84.0K | 0.00% | +9,877+46.7% | Added |
| Mercer Global Advisors Inc | 30,959 | $83.6K | 0.00% | +30,959 | New |
| Voya Investment Management LLC | 30,863 | $83.3K | 0.00% | −5,621−15.4% | Reduced |
| ProShare Advisors LLC | 28,204 | $76.2K | 0.00% | +9,280+49.0% | Added |
| Advisor Group Holdings, Inc. | 27,870 | $75.2K | 0.00% | +17,118+159.2% | Added |
| New York State Common Retirement Fund | 26,084 | $70.4K | 0.00% | 00.0% | Unchanged |
| Guidance Point Advisors, LLC | 25,742 | $69.5K | 0.02% | 00.0% | Unchanged |
| Sanctuary Advisors, LLC | 35,243 | $69.1K | 0.00% | +35,243 | New |
| Jane Street Group, LLC | 23,845 | $64.4K | 0.00% | −232,844−90.7% | Reduced |
| Tower Research Capital LLC (TRC) | 23,347 | $63.0K | 0.00% | +13,592+139.3% | Added |
| SBI Securities Co., Ltd. | 22,261 | $60.1K | 0.00% | +22,261 | New |
| JustInvest LLC | 19,945 | $53.9K | 0.00% | +3,612+22.1% | Added |
| BNP Paribas Arbitrage, SA | 19,025 | $51.4K | 0.00% | +19,025 | New |
| DLK Investment Management, LLC | 19,000 | $51.3K | 0.02% | 00.0% | Unchanged |
| Eqis Capital Management, Inc. | 16,465 | $44.5K | 0.00% | −743−4.3% | Reduced |
| Bravias Capital Group, LLC | 20,250 | $40.1K | 0.03% | +20,250 | New |
| Flagship Private Wealth, LLC | 14,158 | $38.2K | 0.02% | 00.0% | Unchanged |
| Alpine Global Management, LLC | 13,785 | $37.2K | 0.01% | +13,785 | New |
| Procyon Private Wealth Partners, LLC | 13,671 | $36.9K | 0.00% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 13,488 | $36.4K | 0.00% | +13,488 | New |
| Wealth Enhancement Advisory Services, LLC | 13,384 | $36.1K | 0.00% | +13,384 | New |
| Cetera Investment Advisers | 13,380 | $36.1K | 0.00% | +13,380 | New |
| HSBC Holdings PLC | 11,742 | $34.5K | 0.00% | −656−5.3% | Reduced |
| Royal Bank of Canada | 12,616 | $34.0K | 0.00% | +2,254+21.8% | Added |
| Jump Financial, LLC | 12,385 | $33.4K | 0.00% | +12,385 | New |
| Victory Capital Management Inc | 12,064 | $32.6K | 0.00% | −250−2.0% | Reduced |
| Dudley Capital Management, LLC | 11,000 | $29.7K | 0.02% | +11,000 | New |
| Callan Capital, LLC | 10,800 | $29.2K | 0.00% | +10,800 | New |
| Abel Hall, LLC | 10,432 | $28.2K | 0.02% | +10,432 | New |
| GWM Advisors LLC | 10,250 | $27.7K | 0.00% | −242−2.3% | Reduced |
| TriaGen Wealth Management LLC | 10,000 | $27.0K | 0.01% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,906 | $26.7K | 0.00% | 00.0% | Unchanged |
| Wolverine Asset Management LLC | 9,632 | $26.0K | 0.00% | +9,632 | New |
| Legal & General Group Plc | 9,294 | $25.0K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 9,053 | $24.4K | 0.00% | +8,260+1,041.6% | Added |
| Nisa Investment Advisors, LLC | 7,516 | $20.3K | 0.00% | +6,950+1,227.9% | Added |
| Cubist Systematic Strategies, LLC | 7,305 | $19.7K | 0.00% | −33,756−82.2% | Reduced |
| California State Teachers Retirement System | 7,257 | $19.6K | 0.00% | 00.0% | Unchanged |
| Mark Sheptoff Financial Planning, LLC | 7,000 | $18.9K | 0.01% | +7,000 | New |
| Point72 (DIFC) Ltd | 6,575 | $17.8K | 0.00% | −1,524−18.8% | Reduced |
| Federation des caisses Desjardins du Quebec | 6,150 | $16.6K | 0.00% | +6,100+12,200.0% | Added |
| Principal Securities, Inc. | 4,912 | $13.3K | 0.00% | +3,775+332.0% | Added |