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 2023
Institutional positions in Quantum-Si Inc as of Jun 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
- 91
- −8 vs. Q1 2023
- Shares held
- 43.8M
- +380.1K (+0.9%) vs. Q1 2023
- Total value
- $78.5M
- +$2.04M (+2.7%) vs. Q1 2023
- New holders
- 9
- 36 more added
- Sold out
- 17
- 18 more reduced
1 institution that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2023
Shares, value and share of portfolio for each institution holding Quantum-Si Inc; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nisa Investment Advisors, LLC | 38 | $68 | 0.00% | +38 | New |
| Federation des caisses Desjardins du Quebec | 50 | $90 | 0.00% | +50 | New |
| Eagle Bay Advisors LLC | 277 | $496 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 492 | $880 | 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 | $1.07K | 0.00% | 00.0% | Unchanged |
| Johnson Midwest Financial, LLC | 770 | $1.38K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 800 | $1.43K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 836 | $1.50K | 0.00% | +336+67.2% | Added |
| Archer Investment Corp | 1,399 | $2.50K | 0.00% | +1,399 | New |
| China Universal Asset Management Co., Ltd. | 1,593 | $2.85K | 0.00% | −31−1.9% | Reduced |
| Advisor Group Holdings, Inc. | 2,170 | $3.88K | 0.00% | −1,000−31.5% | Reduced |
| Group One Trading, L.P. | 3,154 | $5.65K | 0.00% | +1,600+103.0% | Added |
| FMR LLC | 3,534 | $6.33K | 0.00% | +2,526+250.6% | Added |
| Metropolitan Life Insurance Co | 5,570 | $9.97K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 6,850 | $12.3K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 7,500 | $13.4K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 9,322 | $16.0K | 0.00% | +4,043+76.6% | Added |
| Legal & General Group Plc | 9,294 | $16.6K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 9,450 | $17.0K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 10,370 | $18.6K | 0.00% | −241−2.3% | Reduced |
| FSA Wealth Management LLC | 11,150 | $20.0K | 0.01% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 11,275 | $20.2K | 0.00% | +11,275 | New |
| Pitcairn Co | 11,792 | $21.1K | 0.00% | +11,792 | New |
| Procyon Private Wealth Partners, LLC | 13,671 | $24.5K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 13,919 | $24.9K | 0.00% | −24,533−63.8% | Reduced |
| Flagship Private Wealth, LLC | 14,158 | $25.3K | 0.02% | 00.0% | Unchanged |
| Mutual Advisors, LLC | 14,358 | $25.7K | 0.00% | +1,184+9.0% | Added |
| Tower Research Capital LLC (TRC) | 14,410 | $25.8K | 0.00% | −18,623−56.4% | Reduced |
| Royal Bank of Canada | 15,861 | $29.0K | 0.00% | +10,751+210.4% | Added |
| ProShare Advisors LLC | 20,930 | $37.5K | 0.00% | +1,868+9.8% | Added |
| Prelude Capital Management, LLC | 20,934 | $37.5K | 0.00% | +1,587+8.2% | Added |
| STRS Ohio | 21,300 | $38.0K | 0.00% | 00.0% | Unchanged |
| Round Rock Advisors, LLC | 21,885 | $39.2K | 0.01% | 00.0% | Unchanged |
| Guidance Point Advisors, LLC | 25,742 | $46.1K | 0.02% | 00.0% | Unchanged |
| Wealth Management Associates, Inc. | 25,900 | $46.4K | 0.03% | +3,900+17.7% | Added |
| New York State Common Retirement Fund | 25,910 | $46.4K | 0.00% | −103−0.4% | Reduced |
| Jane Street Group, LLC | 27,299 | $48.9K | 0.00% | −103,738−79.2% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 30,605 | $55.0K | 0.00% | +3,688+13.7% | Added |
| Citigroup Inc | 33,163 | $59.4K | 0.00% | +31,799+2,331.3% | Added |
| California State Teachers Retirement System | 33,415 | $59.8K | 0.00% | −544−1.6% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 33,959 | $60.8K | 0.00% | −2,343−6.5% | Reduced |
| Red Wave Investments LLC | 37,000 | $66.2K | 0.03% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 37,091 | $66.4K | 0.00% | −5,937−13.8% | Reduced |
| Principal Financial Group Inc | 41,696 | $74.6K | 0.00% | +10,148+32.2% | Added |
| Voya Investment Management LLC | 41,741 | $74.7K | 0.00% | +7,026+20.2% | Added |
| XTX Topco Ltd | 44,168 | $79.1K | 0.01% | +44,168 | New |
| Man Group plc | 44,653 | $79.9K | 0.00% | +44,653 | New |
| Alliancebernstein L.P. | 45,740 | $81.9K | 0.00% | +14,240+45.2% | Added |
| Price T Rowe Associates Inc | 47,381 | $85.0K | 0.00% | +1,030+2.2% | Added |
| American International Group, Inc. | 48,349 | $86.5K | 0.00% | +4,265+9.7% | Added |
| Manufacturers Life Insurance Company, The | 49,008 | $87.7K | 0.00% | +10,879+28.5% | Added |
| Barclays PLC | 49,777 | $89.1K | 0.00% | −26,358−34.6% | Reduced |
| Wells Fargo & Company | 51,579 | $92.3K | 0.00% | +20,826+67.7% | Added |
| MetLife Investment Management | 53,683 | $96.1K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 61,986 | $111.0K | 0.00% | +22,355+56.4% | Added |
| Deutsche Bank AG | 62,087 | $111.1K | 0.00% | −5,528−8.2% | Reduced |
| Westchester Capital Management, LLC | 64,964 | $116.3K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 81,925 | $146.6K | 0.00% | +8,028+10.9% | Added |
| Shay Capital LLC | 83,698 | $149.8K | 0.05% | +83,698 | New |
| Susquehanna International Group, LLP | 93,182 | $166.8K | 0.00% | −5,867−5.9% | Reduced |
| Citadel Advisors LLC | 107,111 | $191.7K | 0.00% | +76,478+249.7% | Added |
| General American Investors Co Inc | 119,250 | $213.5K | 0.02% | 00.0% | Unchanged |
| D.A. Davidson & Co. | 125,000 | $223.8K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 125,243 | $224.2K | 0.00% | −76−0.1% | Reduced |
| Rhumbline Advisers | 138,752 | $248.4K | 0.00% | +2,330+1.7% | Added |
| Invesco Ltd. | 177,947 | $318.5K | 0.00% | −991−0.6% | Reduced |
| Neumann Advisory Hong Kong Ltd | 192,857 | $345.0K | 0.13% | 00.0% | Unchanged |
| Clearline Capital LP | 211,900 | $379.3K | 0.05% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 223,256 | $400.0K | 0.00% | +110,400+97.8% | Added |
| Charles Schwab Investment Management Inc | 261,577 | $468.2K | 0.00% | +23,349+9.8% | Added |
| Morgan Stanley | 263,097 | $470.9K | 0.00% | −437−0.2% | Reduced |
| Nuveen Asset Management, LLC | 289,181 | $517.6K | 0.00% | −26,417−8.4% | Reduced |
| Knollwood Investment Advisory, LLC | 300,000 | $537.0K | 0.18% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 355,764 | $636.8K | 0.00% | +64,834+22.3% | Added |
| Bridgeway Capital Management, LLC | 356,700 | $638.5K | 0.02% | +50,000+16.3% | Added |
| Goldman Sachs Group Inc | 466,070 | $834.3K | 0.00% | +63,712+15.8% | Added |
| Guggenheim Capital LLC | 709,035 | $1.27M | 0.01% | +91,961+14.9% | Added |
| Fosun International Ltd | 743,935 | $1.33M | 0.19% | 00.0% | Unchanged |
| Northern Trust Corp | 778,842 | $1.39M | 0.00% | +36,365+4.9% | Added |
| Deerfield Management Company, L.P. (Series C) | 797,500 | $1.43M | 0.03% | +797,500 | New |
| Foresite Capital Management V, LLC | 924,404 | $1.65M | 1.21% | 00.0% | Unchanged |
| Nikko Asset Management Americas, Inc. | 1,626,985 | $2.90M | 0.03% | +502,283+44.7% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,626,985 | $2.91M | 0.00% | +502,283+44.7% | Added |
| Geode Capital Management, LLC | 1,858,730 | $3.33M | 0.00% | +130,091+7.5% | Added |
| State Street Corp | 2,083,293 | $3.73M | 0.00% | +422,554+25.4% | Added |
| Glenview Capital Management, LLC | 2,415,990 | $4.32M | 0.12% | −1,800,000−42.7% | Reduced |
| Vanguard Group Inc | 5,155,004 | $9.23M | 0.00% | +31,446+0.6% | Added |
| BlackRock Inc. | 7,101,978 | $12.7M | 0.00% | +1,018,153+16.7% | Added |
| ARK Investment Management LLCSuperinvestorARK Invest | 12,754,531 | $22.8M | 0.15% | +1,055,740+9.0% | Added |
| Foresite Capital Management IV, LLC | 0 | $0 | 0.00% | −1,771,249−100.0% | Sold out |
| Security Benefit Life Insurance Co | 0 | $0 | 0.00% | −715,479−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −167,948−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −51,312−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −45,863−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −39,288−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −30,900−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −30,467−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −23,999−100.0% | Sold out |