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 |
|---|---|---|---|---|---|
| The PNC Financial Services Group, Inc. | 6 | $16 | 0.00% | +6 | New |
| EverSource Wealth Advisors, LLC | 26 | $70 | 0.00% | +26 | New |
| FSA Wealth Management LLC | 100 | $270 | 0.00% | 00.0% | Unchanged |
| American Capital Advisory, LLC | 100 | $270 | 0.00% | +100 | New |
| Parkside Financial Bank & Trust | 150 | $405 | 0.00% | +150 | New |
| Medallion Wealth Advisors, LLC | 256 | $692 | 0.00% | +256 | New |
| Eagle Bay Advisors LLC | 277 | $748 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 475 | $1.28K | 0.00% | +234+97.1% | Added |
| Allworth Financial LP | 836 | $1.99K | 0.00% | 00.0% | Unchanged |
| Capital Advisors, Ltd. LLC | 561 | $2.00K | 0.00% | +561 | New |
| Twin Tree Management, LP | 758 | $2.05K | 0.00% | +758 | New |
| TD Waterhouse Canada Inc. | 800 | $2.15K | 0.00% | +500+166.7% | Added |
| Steward Partners Investment Advisory, LLC | 1,000 | $2.70K | 0.00% | −1,000−50.0% | Reduced |
| Caitong International Asset Management Co., Ltd | 1,228 | $3.32K | 0.00% | +1,228 | New |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 1,357 | $3.66K | 0.00% | 00.0% | Unchanged |
| Tucker Asset Management LLC | 1,470 | $3.97K | 0.00% | +1,470 | New |
| Archer Investment Corp | 2,000 | $5.40K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 2,568 | $7.00K | 0.00% | +2,132+489.0% | Added |
| Amalgamated Bank | 3,170 | $9.00K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 3,401 | $9.18K | 0.00% | +3,094+1,007.8% | Added |
| Pinney & Scofield, Inc. | 3,680 | $9.94K | 0.01% | +3,680 | New |
| Principal Securities, Inc. | 4,912 | $13.3K | 0.00% | +3,775+332.0% | Added |
| Federation des caisses Desjardins du Quebec | 6,150 | $16.6K | 0.00% | +6,100+12,200.0% | Added |
| Point72 (DIFC) Ltd | 6,575 | $17.8K | 0.00% | −1,524−18.8% | Reduced |
| Mark Sheptoff Financial Planning, LLC | 7,000 | $18.9K | 0.01% | +7,000 | New |
| California State Teachers Retirement System | 7,257 | $19.6K | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 7,305 | $19.7K | 0.00% | −33,756−82.2% | Reduced |
| Nisa Investment Advisors, LLC | 7,516 | $20.3K | 0.00% | +6,950+1,227.9% | Added |
| Russell Investments Group, Ltd. | 9,053 | $24.4K | 0.00% | +8,260+1,041.6% | Added |
| Legal & General Group Plc | 9,294 | $25.0K | 0.00% | 00.0% | Unchanged |
| Wolverine Asset Management LLC | 9,632 | $26.0K | 0.00% | +9,632 | New |
| Ameritas Investment Partners, Inc. | 9,906 | $26.7K | 0.00% | 00.0% | Unchanged |
| TriaGen Wealth Management LLC | 10,000 | $27.0K | 0.01% | 00.0% | Unchanged |
| GWM Advisors LLC | 10,250 | $27.7K | 0.00% | −242−2.3% | Reduced |
| Abel Hall, LLC | 10,432 | $28.2K | 0.02% | +10,432 | New |
| Callan Capital, LLC | 10,800 | $29.2K | 0.00% | +10,800 | New |
| Dudley Capital Management, LLC | 11,000 | $29.7K | 0.02% | +11,000 | New |
| Victory Capital Management Inc | 12,064 | $32.6K | 0.00% | −250−2.0% | Reduced |
| Jump Financial, LLC | 12,385 | $33.4K | 0.00% | +12,385 | New |
| Royal Bank of Canada | 12,616 | $34.0K | 0.00% | +2,254+21.8% | Added |
| HSBC Holdings PLC | 11,742 | $34.5K | 0.00% | −656−5.3% | Reduced |
| Cetera Investment Advisers | 13,380 | $36.1K | 0.00% | +13,380 | New |
| Wealth Enhancement Advisory Services, LLC | 13,384 | $36.1K | 0.00% | +13,384 | New |
| Balyasny Asset Management LLC | 13,488 | $36.4K | 0.00% | +13,488 | New |
| Procyon Private Wealth Partners, LLC | 13,671 | $36.9K | 0.00% | 00.0% | Unchanged |
| Alpine Global Management, LLC | 13,785 | $37.2K | 0.01% | +13,785 | New |
| Flagship Private Wealth, LLC | 14,158 | $38.2K | 0.02% | 00.0% | Unchanged |
| Bravias Capital Group, LLC | 20,250 | $40.1K | 0.03% | +20,250 | New |
| Eqis Capital Management, Inc. | 16,465 | $44.5K | 0.00% | −743−4.3% | Reduced |
| DLK Investment Management, LLC | 19,000 | $51.3K | 0.02% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 19,025 | $51.4K | 0.00% | +19,025 | New |
| JustInvest LLC | 19,945 | $53.9K | 0.00% | +3,612+22.1% | Added |
| SBI Securities Co., Ltd. | 22,261 | $60.1K | 0.00% | +22,261 | New |
| Tower Research Capital LLC (TRC) | 23,347 | $63.0K | 0.00% | +13,592+139.3% | Added |
| Jane Street Group, LLC | 23,845 | $64.4K | 0.00% | −232,844−90.7% | Reduced |
| Sanctuary Advisors, LLC | 35,243 | $69.1K | 0.00% | +35,243 | New |
| Guidance Point Advisors, LLC | 25,742 | $69.5K | 0.02% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 26,084 | $70.4K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 27,870 | $75.2K | 0.00% | +17,118+159.2% | Added |
| ProShare Advisors LLC | 28,204 | $76.2K | 0.00% | +9,280+49.0% | Added |
| Voya Investment Management LLC | 30,863 | $83.3K | 0.00% | −5,621−15.4% | Reduced |
| Mercer Global Advisors Inc | 30,959 | $83.6K | 0.00% | +30,959 | New |
| Commonwealth Equity Services, LLC | 31,013 | $84.0K | 0.00% | +9,877+46.7% | Added |
| Police & Firemen's Retirement System of New Jersey | 31,134 | $84.1K | 0.00% | +31,134 | New |
| Deutsche Bank AG | 32,560 | $87.9K | 0.00% | 00.0% | Unchanged |
| Thoroughbred Financial Services, LLC | 33,000 | $89.0K | 0.01% | +33,000 | New |
| SEI Investments Co | 33,103 | $89.4K | 0.00% | 00.0% | Unchanged |
| Mariner, LLC | 33,439 | $90.3K | 0.00% | +7,540+29.1% | Added |
| Davy Global Fund Management Ltd | 33,902 | $91.5K | 0.01% | +7,704+29.4% | Added |
| Axq Capital, LP | 34,067 | $92.0K | 0.04% | +34,067 | New |
| Winton Group Ltd | 34,610 | $93.4K | 0.01% | +34,610 | New |
| Manufacturers Life Insurance Company, The | 34,850 | $94.1K | 0.00% | +34,850 | New |
| Wealth Management Associates, Inc. | 35,050 | $94.6K | 0.04% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 36,330 | $98.1K | 0.00% | +36,330 | New |
| Red Wave Investments LLC | 37,000 | $99.9K | 0.03% | 00.0% | Unchanged |
| Invesco Ltd. | 37,321 | $100.8K | 0.00% | +3,956+11.9% | Added |
| Cambridge Investment Research Advisors, Inc. | 38,867 | $105.0K | 0.00% | −9,355−19.4% | Reduced |
| Belvedere Trading LLC | 41,053 | $110.8K | 0.01% | +41,053 | New |
| JPMorgan Chase & Co | 44,857 | $121.1K | 0.00% | −184−0.4% | Reduced |
| Corebridge Financial, Inc. | 49,790 | $134.4K | 0.00% | −3,758−7.0% | Reduced |
| Intech Investment Management LLC | 50,837 | $137.3K | 0.00% | +50,837 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 57,006 | $153.9K | 0.00% | −569−1.0% | Reduced |
| SG Americas Securities, LLC | 67,588 | $182.0K | 0.00% | +7,470+12.4% | Added |
| Wells Fargo & Company | 71,980 | $194.3K | 0.00% | +8,802+13.9% | Added |
| Alliancebernstein L.P. | 76,080 | $205.4K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 80,321 | $216.9K | 0.00% | +59,210+280.5% | Added |
| Citigroup Inc | 90,248 | $243.7K | 0.00% | +5,646+6.7% | Added |
| AQR Capital Management LLC | 102,398 | $276.5K | 0.00% | +76,504+295.5% | Added |
| Price T Rowe Associates Inc | 109,114 | $295.0K | 0.00% | +11,787+12.1% | Added |
| Bank of America Corp | 111,871 | $302.1K | 0.00% | +13,186+13.4% | Added |
| Pathstone Holdings, LLC | 128,584 | $347.2K | 0.00% | −15,209−10.6% | Reduced |
| Wolverine Trading, LLC | 111,935 | $372.7K | 0.01% | +98,373+725.4% | Added |
| Centiva Capital, LP | 143,176 | $386.6K | 0.01% | +143,176 | New |
| Rhumbline Advisers | 148,946 | $402.1K | 0.00% | +5,298+3.7% | Added |
| Barclays PLC | 150,616 | $406.7K | 0.00% | −46,210−23.5% | Reduced |
| Two Sigma Investments, LP | 152,683 | $412.2K | 0.00% | +152,683 | New |
| Green Alpha Advisors, LLC | 158,858 | $428.9K | 0.34% | −16,197−9.3% | Reduced |
| Guggenheim Capital LLC | 199,999 | $540.0K | 0.00% | −42,455−17.5% | Reduced |
| Shay Capital LLC | 216,546 | $584.7K | 0.14% | +78,376+56.7% | Added |
| XTX Topco Ltd | 245,585 | $663.1K | 0.06% | +201,773+460.5% | Added |