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, Q3 2023
Institutional positions in Quantum-Si Inc as of Sep 30, 2023. 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
- 96
- +5 vs. Q2 2023
- Shares held
- 54.5M
- +10.7M (+24.4%) vs. Q2 2023
- Total value
- $90.5M
- +$12.0M (+15.3%) vs. Q2 2023
- New holders
- 20
- 32 more added
- Sold out
- 15
- 16 more reduced
Compare with Q2 2023: 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, Q3 2023
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 14,448,217 | $24.0M | 0.18% | +1,693,686+13.3% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 8,532,917 | $14.2M | 0.01% | +6,905,932+424.5% | Added |
| Nikko Asset Management Americas, Inc. | 8,532,917 | $14.2M | 0.17% | +6,905,932+424.5% | Added |
| BlackRock Inc. | 7,013,029 | $11.6M | 0.00% | −88,949−1.3% | Reduced |
| Vanguard Group Inc | 5,165,196 | $8.57M | 0.00% | +10,192+0.2% | Added |
| State Street Corp | 2,193,418 | $3.64M | 0.00% | +110,125+5.3% | Added |
| Geode Capital Management, LLC | 2,021,594 | $3.36M | 0.00% | +162,864+8.8% | Added |
| Northern Trust Corp | 822,762 | $1.37M | 0.00% | +43,920+5.6% | Added |
| Fosun International Ltd | 743,935 | $1.23M | 0.20% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 419,366 | $696.1K | 0.01% | −289,669−40.9% | Reduced |
| Bridgeway Capital Management, LLC | 356,700 | $592.1K | 0.01% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 346,956 | $575.9K | 0.00% | −8,808−2.5% | Reduced |
| Knollwood Investment Advisory, LLC | 300,000 | $498.0K | 0.23% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 288,885 | $479.5K | 0.00% | −296−0.1% | Reduced |
| Charles Schwab Investment Management Inc | 276,955 | $459.7K | 0.00% | +15,378+5.9% | Added |
| Morgan Stanley | 271,067 | $450.0K | 0.00% | +7,970+3.0% | Added |
| Invesco Ltd. | 179,194 | $297.5K | 0.00% | +1,247+0.7% | Added |
| Goldman Sachs Group Inc | 169,314 | $281.1K | 0.00% | −296,756−63.7% | Reduced |
| Neumann Advisory Hong Kong Ltd | 166,198 | $276.0K | 0.11% | −26,659−13.8% | Reduced |
| Putnam Investments LLC | 157,589 | $261.6K | 0.00% | +157,589 | New |
| Rhumbline Advisers | 142,840 | $237.1K | 0.00% | +4,088+2.9% | Added |
| Bank of America Corp | 142,481 | $236.5K | 0.00% | +17,238+13.8% | Added |
| Susquehanna International Group, LLP | 120,296 | $199.7K | 0.00% | +27,114+29.1% | Added |
| General American Investors Co Inc | 119,250 | $198.0K | 0.02% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 92,060 | $152.8K | 0.00% | +10,135+12.4% | Added |
| Two Sigma Investments, LP | 82,791 | $137.4K | 0.00% | +45,700+123.2% | Added |
| Winton Group Ltd | 62,058 | $103.0K | 0.01% | +62,058 | New |
| UBS Group AG | 60,225 | $100.0K | 0.00% | −1,761−2.8% | Reduced |
| Alliancebernstein L.P. | 55,200 | $91.6K | 0.00% | +9,460+20.7% | Added |
| MetLife Investment Management | 53,683 | $89.1K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 52,045 | $87.0K | 0.00% | +4,664+9.8% | Added |
| American International Group, Inc. | 50,777 | $84.3K | 0.00% | +2,428+5.0% | Added |
| Barclays PLC | 47,938 | $79.6K | 0.00% | −1,839−3.7% | Reduced |
| Principal Financial Group Inc | 47,760 | $79.3K | 0.00% | +6,064+14.5% | Added |
| Deutsche Bank AG | 47,699 | $79.2K | 0.00% | −14,388−23.2% | Reduced |
| Manufacturers Life Insurance Company, The | 46,726 | $77.6K | 0.00% | −2,282−4.7% | Reduced |
| SG Americas Securities, LLC | 46,566 | $77.0K | 0.00% | +46,566 | New |
| Green Alpha Advisors, LLC | 42,622 | $70.8K | 0.05% | +42,622 | New |
| Wells Fargo & Company | 42,276 | $70.2K | 0.00% | −9,303−18.0% | Reduced |
| Voya Investment Management LLC | 41,741 | $69.3K | 0.00% | 00.0% | Unchanged |
| Red Wave Investments LLC | 37,000 | $61.4K | 0.03% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 35,636 | $59.2K | 0.00% | +35,636 | New |
| Virtu Financial LLC | 35,358 | $59.0K | 0.01% | +35,358 | New |
| Cambridge Investment Research Advisors, Inc. | 30,605 | $51.0K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Services Advisors, Inc. | 30,500 | $50.6K | 0.00% | −3,459−10.2% | Reduced |
| American Century Companies Inc | 28,169 | $46.8K | 0.00% | +28,169 | New |
| Jane Street Group, LLC | 27,785 | $46.1K | 0.00% | +486+1.8% | Added |
| New York State Common Retirement Fund | 26,272 | $43.6K | 0.00% | +362+1.4% | Added |
| Pathstone Family Office, LLC | 26,039 | $43.2K | 0.00% | +26,039 | New |
| Tower Research Capital LLC (TRC) | 25,867 | $42.9K | 0.00% | +11,457+79.5% | Added |
| Guidance Point Advisors, LLC | 25,742 | $42.7K | 0.02% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 23,744 | $39.4K | 0.00% | +23,744 | New |
| California State Teachers Retirement System | 22,450 | $37.3K | 0.00% | −10,965−32.8% | Reduced |
| Round Rock Advisors, LLC | 21,885 | $36.3K | 0.01% | 00.0% | Unchanged |
| ProShare Advisors LLC | 21,179 | $35.2K | 0.00% | +249+1.2% | Added |
| STRS Ohio | 21,300 | $35.0K | 0.00% | 00.0% | Unchanged |
| Shay Capital LLC | 19,537 | $32.4K | 0.01% | −64,161−76.7% | Reduced |
| Two Sigma Advisers, LP | 19,400 | $32.2K | 0.00% | +19,400 | New |
| Wealth Management Associates, Inc. | 17,900 | $29.7K | 0.02% | −8,000−30.9% | Reduced |
| GWM Advisors LLC | 17,742 | $29.5K | 0.00% | +17,250+3,506.1% | Added |
| Royal Bank of Canada | 17,133 | $28.0K | 0.00% | +1,272+8.0% | Added |
| Commonwealth Equity Services, LLC | 16,774 | $28.0K | 0.00% | +16,774 | New |
| Flagship Private Wealth, LLC | 14,158 | $23.5K | 0.02% | 00.0% | Unchanged |
| Procyon Private Wealth Partners, LLC | 13,671 | $22.7K | 0.00% | 00.0% | Unchanged |
| Stratos Wealth Advisors, LLC | 11,810 | $19.6K | 0.00% | +11,810 | New |
| Pitcairn Co | 11,792 | $19.6K | 0.00% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 11,330 | $18.8K | 0.00% | +55+0.5% | Added |
| Mariner, LLC | 11,263 | $18.7K | 0.00% | +11,263 | New |
| FSA Wealth Management LLC | 11,150 | $18.5K | 0.01% | 00.0% | Unchanged |
| Victory Capital Management Inc | 10,840 | $18.0K | 0.00% | +470+4.5% | Added |
| TriaGen Wealth Management LLC | 10,000 | $16.6K | 0.01% | +10,000 | New |
| Ameritas Investment Partners, Inc. | 9,906 | $16.4K | 0.00% | +3,056+44.6% | Added |
| Amalgamated Bank | 9,450 | $16.0K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,294 | $15.4K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 7,500 | $12.4K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 6,747 | $11.2K | 0.00% | +3,213+90.9% | Added |
| Metropolitan Life Insurance Co | 5,570 | $9.25K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 5,376 | $8.92K | 0.00% | +3,206+147.7% | Added |
| China Universal Asset Management Co., Ltd. | 3,127 | $5.19K | 0.00% | +1,534+96.3% | Added |
| Level Financial Advisors, Inc. | 2,500 | $4.15K | 0.00% | +2,500 | New |
| Citigroup Inc | 1,628 | $2.70K | 0.00% | −31,535−95.1% | Reduced |
| Archer Investment Corp | 1,399 | $2.32K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 1,000 | $1.66K | 0.00% | +1,000 | New |
| Allworth Financial LP | 836 | $1.39K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 800 | $1.33K | 0.00% | 00.0% | Unchanged |
| Johnson Midwest Financial, LLC | 770 | $1.28K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 343 | $1.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 407 | $1.00K | 0.00% | 00.0% | Unchanged |
| First Manhattan Co | 600 | $996 | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 513 | $852 | 0.00% | +513 | New |
| Russell Investments Group, Ltd. | 311 | $516 | 0.00% | +311 | New |
| TD Waterhouse Canada Inc. | 300 | $471 | 0.00% | +300 | New |
| Eagle Bay Advisors LLC | 277 | $460 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 50 | $83 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 44 | $73 | 0.00% | +6+15.8% | Added |
| Harbour Investments, Inc. | 20 | $33 | 0.00% | +20 | New |
| Glenview Capital Management, LLC | 0 | $0 | 0.00% | −2,415,990−100.0% | Sold out |
| Foresite Capital Management V, LLC | 0 | $0 | 0.00% | −924,404−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −797,500−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −223,256−100.0% | Sold out |