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, Q2 2026
Institutional positions in Quantum-Si Inc as of Jun 30, 2026. 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
- 141
- −14 vs. Q1 2026
- Shares held
- 52.9M
- −10.1M (−16.1%) vs. Q1 2026
- Total value
- $46.8M
- −$2.07M (−4.2%) vs. Q1 2026
- New holders
- 27
- 34 more added
- Sold out
- 41
- 58 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Caitong International Asset Management Co., Ltd | 1 | $1 | 0.00% | −304−99.7% | Reduced |
| JPL Wealth Management, LLC | 26 | $24 | 0.00% | +26 | New |
| Optiver Holding B.V. | 30 | $27 | 0.00% | −776−96.3% | Reduced |
| Federation des caisses Desjardins du Quebec | 50 | $44 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 53 | $47 | 0.00% | +53 | New |
| Transamerica Financial Advisors, Inc. | 132 | $116 | 0.00% | +132 | New |
| SJS Investment Consulting Inc. | 185 | $164 | 0.00% | +66+55.5% | Added |
| Gill Capital Partners, LLC | 200 | $177 | 0.00% | 00.0% | Unchanged |
| Medallion Wealth Advisors, LLC | 242 | $213 | 0.00% | −228−48.5% | Reduced |
| Harbour Investments, Inc. | 299 | $265 | 0.00% | +49+19.6% | Added |
| Larson Financial Group LLC | 300 | $266 | 0.00% | +300 | New |
| TD Waterhouse Canada Inc. | 300 | $276 | 0.00% | 00.0% | Unchanged |
| Bangor Savings Bank | 500 | $443 | 0.00% | +395+376.2% | Added |
| Rialto Wealth Management, LLC | 562 | $498 | 0.00% | +53+10.4% | Added |
| True Wealth Design, LLC | 720 | $638 | 0.00% | +213+42.0% | Added |
| Farther Finance Advisors, LLC | 959 | $849 | 0.00% | −375−28.1% | Reduced |
| Fortitude Family Office, LLC | 1,245 | $1.10K | 0.00% | +1,245 | New |
| GAMMA Investing LLC | 1,373 | $1.22K | 0.00% | −457−25.0% | Reduced |
| Rothschild Investment LLC | 1,436 | $1.27K | 0.00% | −252−14.9% | Reduced |
| Steward Partners Investment Advisory, LLC | 2,000 | $1.77K | 0.00% | 00.0% | Unchanged |
| Archer Investment Corp | 2,000 | $1.77K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 2,020 | $1.79K | 0.00% | −81−3.9% | Reduced |
| Essential Partners LLC | 3,094 | $2.74K | 0.00% | −12,342−80.0% | Reduced |
| FNY Investment Advisers, LLC | 4,000 | $3.00K | 0.00% | 00.0% | Unchanged |
| Pinney & Scofield, Inc. | 3,680 | $3.26K | 0.00% | 00.0% | Unchanged |
| N.E.W. Advisory Services LLC | 3,854 | $3.41K | 0.00% | 00.0% | Unchanged |
| MTM Investment Management, LLC | 4,125 | $3.65K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 4,185 | $3.70K | 0.00% | +462+12.4% | Added |
| Citigroup Inc | 4,659 | $4.12K | 0.00% | −8,655−65.0% | Reduced |
| Allworth Financial LP | 4,814 | $4.26K | 0.00% | −2,015−29.5% | Reduced |
| EverSource Wealth Advisors, LLC | 5,417 | $4.79K | 0.00% | −38−0.7% | Reduced |
| Russell Investments Group, Ltd. | 7,551 | $6.68K | 0.00% | −4,297−36.3% | Reduced |
| Advisor Group Holdings, Inc. | 7,813 | $6.95K | 0.00% | −157−2.0% | Reduced |
| Royal Bank of Canada | 8,465 | $7.00K | 0.00% | +8,356+7,666.1% | Added |
| Mirae Asset Global Investments Co., Ltd. | 8,847 | $7.83K | 0.00% | −1,353−13.3% | Reduced |
| Kestra Private Wealth Services, LLC | 10,000 | $8.85K | 0.00% | 00.0% | Unchanged |
| Glen Eagle Advisors, LLC | 10,000 | $8.85K | 0.00% | 00.0% | Unchanged |
| Red Reef Advisors LLC | 10,000 | $8.85K | 0.01% | 00.0% | Unchanged |
| Verde Capital Management | 10,000 | $8.85K | 0.00% | +10,000 | New |
| Apollon Wealth Management, LLC | 10,056 | $8.90K | 0.00% | +10,056 | New |
| Cresset Asset Management, LLC | 10,207 | $9.03K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 10,439 | $9.24K | 0.00% | +10,439 | New |
| Krilogy Financial LLC | 10,635 | $9.41K | 0.00% | −6,094−36.4% | Reduced |
| Abel Hall, LLC | 11,060 | $9.79K | 0.00% | +11,060 | New |
| GWM Advisors LLC | 11,168 | $9.88K | 0.00% | −4,652−29.4% | Reduced |
| Integrated Wealth Concepts LLC | 11,333 | $10.0K | 0.00% | −3,166−21.8% | Reduced |
| Jefferies Financial Group Inc. | 11,350 | $10.0K | 0.00% | +11,350 | New |
| Callan Family Office, LLC | 12,119 | $10.7K | 0.00% | +12,119 | New |
| NorthCrest Asset Manangement, LLC | 11,218 | $10.8K | 0.00% | −926−7.6% | Reduced |
| Laurion Capital Management LP | 12,749 | $11.3K | 0.00% | +12,749 | New |
| Raymond James Financial Inc | 13,008 | $11.5K | 0.00% | +13,008 | New |
| Balyasny Asset Management LLC | 13,629 | $12.1K | 0.00% | +13,629 | New |
| Procyon Private Wealth Partners, LLC | 13,671 | $12.1K | 0.00% | 00.0% | Unchanged |
| Flagship Private Wealth, LLC | 14,158 | $12.5K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 17,505 | $15.0K | 0.00% | −16,172−48.0% | Reduced |
| JPMorgan Chase & Co | 17,071 | $15.2K | 0.00% | −66,448−79.6% | Reduced |
| Colony Group, LLC | 17,219 | $15.2K | 0.00% | −6,298−26.8% | Reduced |
| Bank of New York Mellon Corp | 18,805 | $16.6K | 0.00% | −364,283−95.1% | Reduced |
| Anchyra Partners LLC | 18,974 | $16.8K | 0.00% | +18,974 | New |
| Victory Capital Management Inc | 19,630 | $17.4K | 0.00% | −178−0.9% | Reduced |
| Capital Investment Advisory Services, LLC | 20,000 | $17.7K | 0.00% | 00.0% | Unchanged |
| JustInvest LLC | 20,350 | $18.0K | 0.00% | −3,641−15.2% | Reduced |
| LPL Financial LLC | 20,985 | $18.6K | 0.00% | −1,482−6.6% | Reduced |
| Neuberger Berman Group LLC | 21,766 | $19.3K | 0.00% | +21,766 | New |
| HBW Advisory Services LLC | 22,292 | $19.7K | 0.00% | −405−1.8% | Reduced |
| Leonteq Securities AG | 22,500 | $19.9K | 0.00% | −2,500−10.0% | Reduced |
| DLK Investment Management, LLC | 19,000 | $19.9K | 0.01% | +2,250+13.4% | Added |
| Pallas Capital Advisors LLC | 23,320 | $20.6K | 0.00% | −2,437−9.5% | Reduced |
| Merit Financial Group, LLC | 23,616 | $20.9K | 0.00% | −12,731−35.0% | Reduced |
| Tower Research Capital LLC (TRC) | 23,758 | $21.0K | 0.00% | −1,185−4.8% | Reduced |
| Wealth Management Associates, Inc. | 26,350 | $23.3K | 0.01% | −600−2.2% | Reduced |
| Commonwealth Equity Services, LLC | 27,100 | $24.0K | 0.00% | −2,692−9.0% | Reduced |
| Northern Lights Advisors, Inc. | 29,989 | $26.5K | 0.01% | 00.0% | Unchanged |
| Nuveen, LLC | 30,077 | $26.6K | 0.00% | −421,290−93.3% | Reduced |
| IPG Investment Advisors LLC | 30,864 | $27.3K | 0.00% | +30,864 | New |
| Kovack Advisors, Inc. | 31,000 | $27.4K | 0.00% | +1,000+3.3% | Added |
| China Universal Asset Management Co., Ltd. | 31,484 | $27.9K | 0.00% | −3,218−9.3% | Reduced |
| SBI Securities Co., Ltd. | 33,009 | $29.2K | 0.00% | +876+2.7% | Added |
| SRS Capital Advisors, Inc. | 36,790 | $32.6K | 0.00% | +35,426+2,597.2% | Added |
| Red Wave Investments LLC | 37,000 | $32.7K | 0.01% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 37,809 | $33.0K | 0.00% | −4,000−9.6% | Reduced |
| CI Private Wealth, LLC | 38,328 | $33.9K | 0.00% | +38,328 | New |
| Brighton Jones LLC | 38,585 | $34.1K | 0.00% | +11,025+40.0% | Added |
| Point72 Asset Management, L.P. | 39,133 | $34.6K | 0.00% | +39,133 | New |
| Stratos Wealth Advisors, LLC | 40,036 | $35.4K | 0.00% | +25,000+166.3% | Added |
| Sanctuary Advisors, LLC | 41,397 | $36.6K | 0.00% | −1,427−3.3% | Reduced |
| Citadel Advisors LLC | 44,335 | $39.2K | 0.00% | +28,789+185.2% | Added |
| Green Alpha Advisors, LLC | 45,921 | $40.6K | 0.03% | +2,713+6.3% | Added |
| Wealth Enhancement Advisory Services, LLC | 63,435 | $45.2K | 0.00% | −26,101−29.2% | Reduced |
| Atom Investors LP | 51,554 | $45.6K | 0.00% | +51,554 | New |
| Creative Planning | 55,884 | $49.5K | 0.00% | +3,336+6.3% | Added |
| Bank of America Corp | 59,585 | $52.7K | 0.00% | −102,402−63.2% | Reduced |
| Gsa Capital Partners LLP | 60,011 | $53.0K | 0.00% | +60,011 | New |
| Hollencrest Capital Management | 65,011 | $57.5K | 0.00% | +24,900+62.1% | Added |
| Captrust Financial Advisors | 73,128 | $64.7K | 0.00% | +4,092+5.9% | Added |
| Winton Group Ltd | 75,800 | $67.1K | 0.00% | +75,800 | New |
| Rhumbline Advisers | 75,989 | $67.2K | 0.00% | −117,079−60.6% | Reduced |
| Mercer Global Advisors Inc | 77,277 | $68.4K | 0.00% | +22,082+40.0% | Added |
| JTC Employer Solutions Trusteee Ltd | 77,787 | $69.0K | 0.01% | +43,247+125.2% | Added |
| Y-Intercept (Hong Kong) Ltd | 79,089 | $70.0K | 0.00% | +79,089 | New |