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 2025
Institutional positions in Quantum-Si Inc as of Mar 31, 2025. 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
- 137
- +17 vs. Q4 2024
- Shares held
- 57.8M
- +4.44M (+8.3%) vs. Q4 2024
- Total value
- $69.3M
- −$74.7M (−51.9%) vs. Q4 2024
- New holders
- 39
- 41 more added
- Sold out
- 22
- 35 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital Advisors, Ltd. LLC | 60 | $0 | 0.00% | −501−89.3% | Reduced |
| True Wealth Design, LLC | 2 | $3 | 0.00% | +2 | New |
| Federation des caisses Desjardins du Quebec | 50 | $60 | 0.00% | −6,100−99.2% | Reduced |
| FSA Wealth Management LLC | 100 | $120 | 0.00% | 00.0% | Unchanged |
| American Capital Advisory, LLC | 100 | $120 | 0.00% | 00.0% | Unchanged |
| Medallion Wealth Advisors, LLC | 261 | $314 | 0.00% | +5+2.0% | Added |
| Headlands Technologies LLC | 325 | $390 | 0.00% | +325 | New |
| Bangor Savings Bank | 400 | $480 | 0.00% | +400 | New |
| The PNC Financial Services Group, Inc. | 489 | $587 | 0.00% | +483+8,050.0% | Added |
| EverSource Wealth Advisors, LLC | 557 | $668 | 0.00% | +531+2,042.3% | Added |
| UMA Financial Services, Inc. | 687 | $825 | 0.00% | +687 | New |
| TD Waterhouse Canada Inc. | 800 | $950 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 836 | $1.02K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 1,116 | $1.34K | 0.00% | −6,400−85.2% | Reduced |
| Advisor Group Holdings, Inc. | 1,120 | $1.34K | 0.00% | −26,750−96.0% | Reduced |
| CoreCap Advisors, LLC | 1,748 | $2.10K | 0.00% | +1,273+268.0% | Added |
| Archer Investment Corp | 2,000 | $2.40K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 2,074 | $2.49K | 0.00% | −1,327−39.0% | Reduced |
| Jones Financial Companies LLLP | 3,000 | $3.81K | 0.00% | +3,000 | New |
| CWM, LLC | 3,577 | $4.00K | 0.00% | +1,009+39.3% | Added |
| FNY Investment Advisers, LLC | 4,000 | $4.00K | 0.00% | +4,000 | New |
| Pinney & Scofield, Inc. | 3,680 | $4.42K | 0.00% | 00.0% | Unchanged |
| N.E.W. Advisory Services LLC | 3,854 | $4.63K | 0.00% | +3,854 | New |
| Amalgamated Bank | 4,142 | $5.00K | 0.00% | +972+30.7% | Added |
| Wolverine Asset Management LLC | 6,875 | $8.25K | 0.00% | −2,757−28.6% | Reduced |
| California State Teachers Retirement System | 7,257 | $8.71K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 8,617 | $10.3K | 0.00% | −10,408−54.7% | Reduced |
| CIBC Private Wealth Group, LLC | 10,000 | $10.8K | 0.00% | +10,000 | New |
| Legal & General Group Plc | 9,294 | $11.1K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,906 | $11.9K | 0.00% | 00.0% | Unchanged |
| TriaGen Wealth Management LLC | 10,000 | $12.0K | 0.00% | 00.0% | Unchanged |
| Capital Investment Advisory Services, LLC | 10,000 | $12.0K | 0.00% | +10,000 | New |
| Glen Eagle Advisors, LLC | 10,000 | $12.0K | 0.00% | +10,000 | New |
| Kingsview Wealth Management, LLC | 10,012 | $12.0K | 0.00% | +10,012 | New |
| GWM Advisors LLC | 10,250 | $12.3K | 0.00% | 00.0% | Unchanged |
| Ballew Advisors, Inc | 10,000 | $12.5K | 0.01% | +10,000 | New |
| SIH Partners, LLLP | 10,624 | $12.7K | 0.00% | +10,624 | New |
| Eqis Capital Management, Inc. | 11,051 | $13.3K | 0.00% | −5,414−32.9% | Reduced |
| Principal Securities, Inc. | 4,912 | $13.3K | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 11,100 | $13.3K | 0.00% | +11,100 | New |
| Thoroughbred Financial Services, LLC | 12,000 | $14.0K | 0.00% | −21,000−63.6% | Reduced |
| Abel Hall, LLC | 12,008 | $14.4K | 0.01% | +1,576+15.1% | Added |
| Dash Acquisitions Inc. | 10,000 | $14.6K | 0.00% | +10,000 | New |
| State Board of Administration of Florida Retirement System | 12,300 | $14.8K | 0.00% | +12,300 | New |
| Royal Bank of Canada | 13,429 | $16.0K | 0.00% | +813+6.4% | Added |
| Procyon Private Wealth Partners, LLC | 13,671 | $16.4K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 13,987 | $16.6K | 0.00% | +2,245+19.1% | Added |
| Flagship Private Wealth, LLC | 14,158 | $17.0K | 0.01% | 00.0% | Unchanged |
| Mark Sheptoff Financial Planning, LLC | 14,500 | $17.4K | 0.01% | +7,500+107.1% | Added |
| Kestra Advisory Services, LLC | 15,090 | $18.1K | 0.00% | +15,090 | New |
| Neuberger Berman Group LLC | 15,919 | $19.1K | 0.00% | +15,919 | New |
| Victory Capital Management Inc | 16,593 | $19.9K | 0.00% | +4,529+37.5% | Added |
| Stratos Wealth Advisors, LLC | 18,310 | $22.0K | 0.00% | +18,310 | New |
| SBI Securities Co., Ltd. | 18,970 | $22.8K | 0.00% | −3,291−14.8% | Reduced |
| DLK Investment Management, LLC | 19,000 | $22.8K | 0.01% | 00.0% | Unchanged |
| Cetera Investment Advisers | 19,101 | $22.9K | 0.00% | +5,721+42.8% | Added |
| Hollencrest Capital Management | 20,000 | $24.0K | 0.00% | +20,000 | New |
| CIBC World Markets Inc. | 20,011 | $24.0K | 0.00% | +20,011 | New |
| LPL Financial LLC | 20,112 | $24.1K | 0.00% | +20,112 | New |
| Tower Research Capital LLC (TRC) | 21,026 | $25.2K | 0.00% | −2,321−9.9% | Reduced |
| WestHill Financial Advisors, Inc. | 21,727 | $26.1K | 0.01% | +21,727 | New |
| JustInvest LLC | 23,477 | $28.2K | 0.00% | +3,532+17.7% | Added |
| HBW Advisory Services LLC | 24,243 | $29.1K | 0.00% | +24,243 | New |
| Leonteq Securities AG | 25,000 | $30.1K | 0.00% | +25,000 | New |
| ProShare Advisors LLC | 26,016 | $31.2K | 0.00% | −2,188−7.8% | Reduced |
| New York State Common Retirement Fund | 26,084 | $31.3K | 0.00% | 00.0% | Unchanged |
| CIBC World Markets Corp | 26,667 | $32.0K | 0.00% | +26,667 | New |
| Wealth Management Associates, Inc. | 26,950 | $32.3K | 0.01% | −8,100−23.1% | Reduced |
| Mercer Global Advisors Inc | 27,113 | $32.5K | 0.00% | −3,846−12.4% | Reduced |
| Voya Investment Management LLC | 29,552 | $35.5K | 0.00% | −1,311−4.2% | Reduced |
| Atom Investors LP | 30,172 | $36.2K | 0.00% | +30,172 | New |
| Police & Firemen's Retirement System of New Jersey | 31,134 | $37.4K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 33,103 | $39.7K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 34,583 | $41.5K | 0.00% | +34,583 | New |
| Virtu Financial LLC | 34,830 | $42.0K | 0.00% | +34,830 | New |
| Sanctuary Advisors, LLC | 36,782 | $44.1K | 0.00% | +1,539+4.4% | Added |
| Red Wave Investments LLC | 37,000 | $44.4K | 0.02% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 38,257 | $45.9K | 0.00% | +29,204+322.6% | Added |
| Manufacturers Life Insurance Company, The | 38,518 | $46.2K | 0.00% | +3,668+10.5% | Added |
| Cambridge Investment Research Advisors, Inc. | 38,867 | $47.0K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 40,079 | $48.0K | 0.00% | −27,509−40.7% | Reduced |
| Commonwealth Equity Services, LLC | 40,868 | $49.0K | 0.00% | +9,855+31.8% | Added |
| Simplex Trading, LLC | 42,909 | $51.0K | 0.00% | −263,860−86.0% | Reduced |
| Wolverine Trading, LLC | 40,458 | $51.4K | 0.00% | −71,477−63.9% | Reduced |
| Mariner, LLC | 48,005 | $57.6K | 0.00% | +14,566+43.6% | Added |
| Two Sigma Securities, LLC | 52,220 | $62.7K | 0.01% | +52,220 | New |
| JPMorgan Chase & Co | 57,651 | $69.2K | 0.00% | +12,794+28.5% | Added |
| Corebridge Financial, Inc. | 58,876 | $70.7K | 0.00% | +9,086+18.2% | Added |
| Callan Capital, LLC | 60,950 | $73.1K | 0.01% | +50,150+464.4% | Added |
| Intech Investment Management LLC | 61,365 | $73.6K | 0.00% | +10,528+20.7% | Added |
| Deutsche Bank AG | 67,522 | $81.0K | 0.00% | +34,962+107.4% | Added |
| Davy Global Fund Management Ltd | 69,944 | $83.9K | 0.01% | +36,042+106.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 70,552 | $84.7K | 0.00% | +13,546+23.8% | Added |
| MetLife Investment Management | 76,015 | $91.2K | 0.00% | +76,015 | New |
| Sculptor Capital LP | 78,200 | $93.8K | 0.00% | +78,200 | New |
| Ewa, LLC | 78,688 | $94.4K | 0.04% | +78,688 | New |
| Two Sigma Advisers, LP | 78,900 | $94.7K | 0.00% | +78,900 | New |
| FMR LLC | 79,623 | $95.5K | 0.00% | −698−0.9% | Reduced |
| Jefferies Financial Group Inc. | 83,031 | $99.6K | 0.00% | +83,031 | New |
| Wells Fargo & Company | 83,333 | $100.0K | 0.00% | +11,353+15.8% | Added |