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 2024
Institutional positions in Quantum-Si Inc as of Sep 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
- 107
- +9 vs. Q2 2024
- Shares held
- 52.0M
- +5.47M (+11.8%) vs. Q2 2024
- Total value
- $45.9M
- −$2.84M (−5.8%) vs. Q2 2024
- New holders
- 20
- 24 more added
- Sold out
- 11
- 33 more reduced
1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2024
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 11,842,609 | $10.4M | 0.10% | −567,320−4.6% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 7,547,912 | $6.66M | 0.00% | −315,249−4.0% | Reduced |
| Nikko Asset Management Americas, Inc. | 7,527,912 | $6.62M | 0.08% | −335,249−4.3% | Reduced |
| BlackRock, Inc. | 6,900,127 | $6.09M | 0.00% | +6,900,127 | New |
| Vanguard Group Inc | 5,037,258 | $4.44M | 0.00% | +88,896+1.8% | Added |
| Geode Capital Management, LLC | 2,316,921 | $2.04M | 0.00% | +145,091+6.7% | Added |
| State Street Corp | 2,269,038 | $2.00M | 0.00% | −102,313−4.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 939,419 | $828.8K | 0.00% | −3,343−0.4% | Reduced |
| Northern Trust Corp | 801,120 | $706.7K | 0.00% | +18,930+2.4% | Added |
| Fosun International Ltd | 743,935 | $656.3K | 0.22% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 565,080 | $498.5K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 406,700 | $358.8K | 0.01% | 00.0% | Unchanged |
| Morgan Stanley | 306,247 | $270.2K | 0.00% | +135,712+79.6% | Added |
| Knollwood Investment Advisory, LLC | 300,000 | $264.7K | 0.03% | 00.0% | Unchanged |
| General American Investors Co Inc | 294,350 | $259.7K | 0.02% | 00.0% | Unchanged |
| Jane Street Group, LLC | 256,689 | $226.5K | 0.00% | −47,367−15.6% | Reduced |
| Goldman Sachs Group Inc | 242,138 | $213.6K | 0.00% | +52,968+28.0% | Added |
| Guggenheim Capital LLC | 242,454 | $213.4K | 0.00% | −10,820−4.3% | Reduced |
| Charles Schwab Investment Management Inc | 232,360 | $205.0K | 0.00% | −28,082−10.8% | Reduced |
| Bank of New York Mellon Corp | 222,407 | $196.2K | 0.00% | −100,053−31.0% | Reduced |
| Barclays PLC | 196,826 | $173.6K | 0.00% | +133,438+210.5% | Added |
| Green Alpha Advisors, LLC | 175,055 | $154.4K | 0.12% | +45,796+35.4% | Added |
| Millennium Management LLC | 150,865 | $133.1K | 0.00% | −223,862−59.7% | Reduced |
| Pathstone Holdings, LLC | 143,793 | $126.9K | 0.00% | +28,537+24.8% | Added |
| Rhumbline Advisers | 143,648 | $126.7K | 0.00% | −1,551−1.1% | Reduced |
| Shay Capital LLC | 138,170 | $121.9K | 0.04% | −90−0.1% | Reduced |
| Ameriprise Financial Inc | 123,757 | $109.2K | 0.00% | −2,000−1.6% | Reduced |
| Gsa Capital Partners LLP | 112,317 | $99.0K | 0.01% | −69,960−38.4% | Reduced |
| Bank of America Corp | 98,685 | $87.0K | 0.00% | +36,275+58.1% | Added |
| Price T Rowe Associates Inc | 97,327 | $86.0K | 0.00% | +37,600+63.0% | Added |
| Citigroup Inc | 84,602 | $74.6K | 0.00% | +61,210+261.7% | Added |
| Citadel Advisors LLC | 79,753 | $70.4K | 0.00% | −146,547−64.8% | Reduced |
| Alliancebernstein L.P. | 76,080 | $67.1K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 63,178 | $55.7K | 0.00% | −5,525−8.0% | Reduced |
| Public Employees Retirement System of Ohio | 60,526 | $53.4K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 60,118 | $53.0K | 0.00% | +60,118 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 57,575 | $50.8K | 0.00% | +5,511+10.6% | Added |
| Corebridge Financial, Inc. | 53,548 | $47.2K | 0.00% | −330−0.6% | Reduced |
| UBS Group AG | 49,166 | $43.4K | 0.00% | −18,061−26.9% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 48,222 | $43.0K | 0.00% | +14,867+44.6% | Added |
| JPMorgan Chase & Co | 45,041 | $39.7K | 0.00% | +1,382+3.2% | Added |
| Susquehanna International Group, LLP | 44,029 | $38.8K | 0.00% | −91,059−67.4% | Reduced |
| XTX Topco Ltd | 43,812 | $38.7K | 0.00% | +19,651+81.3% | Added |
| Renaissance Technologies LLC | 41,556 | $36.7K | 0.00% | +41,556 | New |
| Cubist Systematic Strategies, LLC | 41,061 | $36.2K | 0.00% | +41,061 | New |
| Red Wave Investments LLC | 37,000 | $32.6K | 0.01% | 00.0% | Unchanged |
| Voya Investment Management LLC | 36,484 | $32.2K | 0.00% | +3,617+11.0% | Added |
| Wealth Management Associates, Inc. | 35,050 | $30.9K | 0.01% | −3,000−7.9% | Reduced |
| Invesco Ltd. | 33,365 | $29.4K | 0.00% | −1,821−5.2% | Reduced |
| SEI Investments Co | 33,103 | $29.2K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 32,560 | $28.7K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 27,500 | $24.3K | 0.00% | −3,200−10.4% | Reduced |
| Davy Global Fund Management Ltd | 26,198 | $23.1K | 0.00% | +4,642+21.5% | Added |
| New York State Common Retirement Fund | 26,084 | $23.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 26,499 | $23.0K | 0.00% | +26,499 | New |
| Mariner, LLC | 25,899 | $22.8K | 0.00% | +25,899 | New |
| AQR Capital Management LLC | 25,894 | $22.8K | 0.00% | +25,894 | New |
| Guidance Point Advisors, LLC | 25,742 | $22.7K | 0.01% | 00.0% | Unchanged |
| Neumann Advisory Hong Kong Ltd | 22,640 | $20.0K | 0.01% | −11,163−33.0% | Reduced |
| Verition Fund Management LLC | 22,125 | $19.5K | 0.00% | −99,675−81.8% | Reduced |
| Commonwealth Equity Services, LLC | 21,136 | $19.0K | 0.00% | −1,274−5.7% | Reduced |
| FMR LLC | 21,111 | $18.6K | 0.00% | +20,172+2,148.2% | Added |
| STRS Ohio | 20,000 | $17.6K | 0.00% | 00.0% | Unchanged |
| DLK Investment Management, LLC | 19,000 | $16.8K | 0.01% | 00.0% | Unchanged |
| ProShare Advisors LLC | 18,924 | $16.7K | 0.00% | −8,332−30.6% | Reduced |
| Stonebrook Private Inc. | 18,105 | $16.0K | 0.00% | +18,105 | New |
| Eqis Capital Management, Inc. | 17,208 | $15.2K | 0.00% | +6,786+65.1% | Added |
| JustInvest LLC | 16,333 | $14.4K | 0.00% | +16,333 | New |
| Flagship Private Wealth, LLC | 14,158 | $12.5K | 0.01% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 14,100 | $12.4K | 0.00% | −12,400−46.8% | Reduced |
| Wolverine Trading, LLC | 13,562 | $12.4K | 0.00% | −1,143−7.8% | Reduced |
| Procyon Private Wealth Partners, LLC | 13,671 | $12.1K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 12,398 | $11.4K | 0.00% | +466+3.9% | Added |
| Victory Capital Management Inc | 12,314 | $10.9K | 0.00% | −160−1.3% | Reduced |
| Stratos Wealth Advisors, LLC | 11,810 | $10.4K | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 10,941 | $9.65K | 0.00% | +10,941 | New |
| Advisor Group Holdings, Inc. | 10,752 | $9.46K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 10,492 | $9.26K | 0.00% | −332−3.1% | Reduced |
| Royal Bank of Canada | 10,362 | $9.00K | 0.00% | +899+9.5% | Added |
| TriaGen Wealth Management LLC | 10,000 | $8.82K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,906 | $8.74K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 9,755 | $8.60K | 0.00% | −10,595−52.1% | Reduced |
| Legal & General Group Plc | 9,294 | $8.20K | 0.00% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 8,099 | $7.14K | 0.00% | +8,099 | New |
| California State Teachers Retirement System | 7,257 | $6.40K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 3,170 | $3.00K | 0.00% | 00.0% | Unchanged |
| Archer Investment Corp | 2,000 | $1.76K | 0.00% | −1,399−41.2% | Reduced |
| Steward Partners Investment Advisory, LLC | 2,000 | $1.76K | 0.00% | 00.0% | Unchanged |
| Nordwand Advisors, LLC | 2,000 | $1.76K | 0.00% | +2,000 | New |
| Fortitude Family Office, LLC | 1,462 | $1.29K | 0.00% | +1,462 | New |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 1,357 | $1.20K | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 1,137 | $1.00K | 0.00% | +553+94.7% | Added |
| Allworth Financial LP | 836 | $738 | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 793 | $700 | 0.00% | −2,441−75.5% | Reduced |
| Northwestern Mutual Wealth Management Co | 728 | $642 | 0.00% | +728 | New |
| Nisa Investment Advisors, LLC | 566 | $499 | 0.00% | +441+352.8% | Added |
| Capital Performance Advisors LLP | 355 | $313 | 0.00% | +355 | New |
| Sterling Capital Management LLC | 307 | $271 | 0.00% | +307 | New |
| Allspring Global Investments Holdings, LLC | 292 | $257 | 0.00% | +292 | New |
| TD Waterhouse Canada Inc. | 300 | $252 | 0.00% | 00.0% | Unchanged |