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 |
|---|---|---|---|---|---|
| CWM, LLC | 436 | $0 | 0.00% | +268+159.5% | Added |
| Federation des caisses Desjardins du Quebec | 50 | $44 | 0.00% | 00.0% | Unchanged |
| Founders Capital Management | 100 | $88 | 0.00% | +100 | New |
| FSA Wealth Management LLC | 100 | $88 | 0.00% | +100 | New |
| Planning Capital Management Corp | 115 | $102 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 241 | $213 | 0.00% | +241 | New |
| Eagle Bay Advisors LLC | 277 | $244 | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 300 | $252 | 0.00% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 292 | $257 | 0.00% | +292 | New |
| Sterling Capital Management LLC | 307 | $271 | 0.00% | +307 | New |
| Capital Performance Advisors LLP | 355 | $313 | 0.00% | +355 | New |
| Nisa Investment Advisors, LLC | 566 | $499 | 0.00% | +441+352.8% | Added |
| Northwestern Mutual Wealth Management Co | 728 | $642 | 0.00% | +728 | New |
| Russell Investments Group, Ltd. | 793 | $700 | 0.00% | −2,441−75.5% | Reduced |
| Allworth Financial LP | 836 | $738 | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 1,137 | $1.00K | 0.00% | +553+94.7% | Added |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 1,357 | $1.20K | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 1,462 | $1.29K | 0.00% | +1,462 | New |
| 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 |
| Amalgamated Bank | 3,170 | $3.00K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 7,257 | $6.40K | 0.00% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 8,099 | $7.14K | 0.00% | +8,099 | New |
| Legal & General Group Plc | 9,294 | $8.20K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 9,755 | $8.60K | 0.00% | −10,595−52.1% | Reduced |
| Ameritas Investment Partners, Inc. | 9,906 | $8.74K | 0.00% | 00.0% | Unchanged |
| TriaGen Wealth Management LLC | 10,000 | $8.82K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 10,362 | $9.00K | 0.00% | +899+9.5% | Added |
| GWM Advisors LLC | 10,492 | $9.26K | 0.00% | −332−3.1% | Reduced |
| Advisor Group Holdings, Inc. | 10,752 | $9.46K | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 10,941 | $9.65K | 0.00% | +10,941 | New |
| Stratos Wealth Advisors, LLC | 11,810 | $10.4K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 12,314 | $10.9K | 0.00% | −160−1.3% | Reduced |
| HSBC Holdings PLC | 12,398 | $11.4K | 0.00% | +466+3.9% | Added |
| Procyon Private Wealth Partners, LLC | 13,671 | $12.1K | 0.00% | 00.0% | Unchanged |
| Wolverine Trading, LLC | 13,562 | $12.4K | 0.00% | −1,143−7.8% | Reduced |
| D. E. Shaw & Co., Inc. | 14,100 | $12.4K | 0.00% | −12,400−46.8% | Reduced |
| Flagship Private Wealth, LLC | 14,158 | $12.5K | 0.01% | 00.0% | Unchanged |
| JustInvest LLC | 16,333 | $14.4K | 0.00% | +16,333 | New |
| Eqis Capital Management, Inc. | 17,208 | $15.2K | 0.00% | +6,786+65.1% | Added |
| Stonebrook Private Inc. | 18,105 | $16.0K | 0.00% | +18,105 | New |
| ProShare Advisors LLC | 18,924 | $16.7K | 0.00% | −8,332−30.6% | Reduced |
| DLK Investment Management, LLC | 19,000 | $16.8K | 0.01% | 00.0% | Unchanged |
| STRS Ohio | 20,000 | $17.6K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 21,111 | $18.6K | 0.00% | +20,172+2,148.2% | Added |
| Commonwealth Equity Services, LLC | 21,136 | $19.0K | 0.00% | −1,274−5.7% | Reduced |
| Verition Fund Management LLC | 22,125 | $19.5K | 0.00% | −99,675−81.8% | Reduced |
| Neumann Advisory Hong Kong Ltd | 22,640 | $20.0K | 0.01% | −11,163−33.0% | Reduced |
| Guidance Point Advisors, LLC | 25,742 | $22.7K | 0.01% | 00.0% | Unchanged |
| AQR Capital Management LLC | 25,894 | $22.8K | 0.00% | +25,894 | New |
| Mariner, LLC | 25,899 | $22.8K | 0.00% | +25,899 | New |
| Simplex Trading, LLC | 26,499 | $23.0K | 0.00% | +26,499 | New |
| New York State Common Retirement Fund | 26,084 | $23.0K | 0.00% | 00.0% | Unchanged |
| Davy Global Fund Management Ltd | 26,198 | $23.1K | 0.00% | +4,642+21.5% | Added |
| Two Sigma Advisers, LP | 27,500 | $24.3K | 0.00% | −3,200−10.4% | Reduced |
| Deutsche Bank AG | 32,560 | $28.7K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 33,103 | $29.2K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 33,365 | $29.4K | 0.00% | −1,821−5.2% | Reduced |
| Wealth Management Associates, Inc. | 35,050 | $30.9K | 0.01% | −3,000−7.9% | Reduced |
| Voya Investment Management LLC | 36,484 | $32.2K | 0.00% | +3,617+11.0% | Added |
| Red Wave Investments LLC | 37,000 | $32.6K | 0.01% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 41,061 | $36.2K | 0.00% | +41,061 | New |
| Renaissance Technologies LLC | 41,556 | $36.7K | 0.00% | +41,556 | New |
| XTX Topco Ltd | 43,812 | $38.7K | 0.00% | +19,651+81.3% | Added |
| Susquehanna International Group, LLP | 44,029 | $38.8K | 0.00% | −91,059−67.4% | Reduced |
| JPMorgan Chase & Co | 45,041 | $39.7K | 0.00% | +1,382+3.2% | Added |
| Cambridge Investment Research Advisors, Inc. | 48,222 | $43.0K | 0.00% | +14,867+44.6% | Added |
| UBS Group AG | 49,166 | $43.4K | 0.00% | −18,061−26.9% | Reduced |
| Corebridge Financial, Inc. | 53,548 | $47.2K | 0.00% | −330−0.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 57,575 | $50.8K | 0.00% | +5,511+10.6% | Added |
| SG Americas Securities, LLC | 60,118 | $53.0K | 0.00% | +60,118 | New |
| Public Employees Retirement System of Ohio | 60,526 | $53.4K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 63,178 | $55.7K | 0.00% | −5,525−8.0% | Reduced |
| Alliancebernstein L.P. | 76,080 | $67.1K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 79,753 | $70.4K | 0.00% | −146,547−64.8% | Reduced |
| Citigroup Inc | 84,602 | $74.6K | 0.00% | +61,210+261.7% | Added |
| Price T Rowe Associates Inc | 97,327 | $86.0K | 0.00% | +37,600+63.0% | Added |
| Bank of America Corp | 98,685 | $87.0K | 0.00% | +36,275+58.1% | Added |
| Gsa Capital Partners LLP | 112,317 | $99.0K | 0.01% | −69,960−38.4% | Reduced |
| Ameriprise Financial Inc | 123,757 | $109.2K | 0.00% | −2,000−1.6% | Reduced |
| Shay Capital LLC | 138,170 | $121.9K | 0.04% | −90−0.1% | Reduced |
| Rhumbline Advisers | 143,648 | $126.7K | 0.00% | −1,551−1.1% | Reduced |
| Pathstone Holdings, LLC | 143,793 | $126.9K | 0.00% | +28,537+24.8% | Added |
| Millennium Management LLC | 150,865 | $133.1K | 0.00% | −223,862−59.7% | Reduced |
| Green Alpha Advisors, LLC | 175,055 | $154.4K | 0.12% | +45,796+35.4% | Added |
| Barclays PLC | 196,826 | $173.6K | 0.00% | +133,438+210.5% | Added |
| Bank of New York Mellon Corp | 222,407 | $196.2K | 0.00% | −100,053−31.0% | Reduced |
| Charles Schwab Investment Management Inc | 232,360 | $205.0K | 0.00% | −28,082−10.8% | Reduced |
| Guggenheim Capital LLC | 242,454 | $213.4K | 0.00% | −10,820−4.3% | Reduced |
| Goldman Sachs Group Inc | 242,138 | $213.6K | 0.00% | +52,968+28.0% | Added |
| Jane Street Group, LLC | 256,689 | $226.5K | 0.00% | −47,367−15.6% | Reduced |
| General American Investors Co Inc | 294,350 | $259.7K | 0.02% | 00.0% | Unchanged |
| Knollwood Investment Advisory, LLC | 300,000 | $264.7K | 0.03% | 00.0% | Unchanged |
| Morgan Stanley | 306,247 | $270.2K | 0.00% | +135,712+79.6% | Added |
| Bridgeway Capital Management, LLC | 406,700 | $358.8K | 0.01% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 565,080 | $498.5K | 0.00% | 00.0% | Unchanged |
| Fosun International Ltd | 743,935 | $656.3K | 0.22% | 00.0% | Unchanged |
| Northern Trust Corp | 801,120 | $706.7K | 0.00% | +18,930+2.4% | Added |
| Jacobs Levy Equity Management, Inc | 939,419 | $828.8K | 0.00% | −3,343−0.4% | Reduced |