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 |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 12,754,531 | $22.8M | 0.15% | +1,055,740+9.0% | Added |
| BlackRock Inc. | 7,101,978 | $12.7M | 0.00% | +1,018,153+16.7% | Added |
| Vanguard Group Inc | 5,155,004 | $9.23M | 0.00% | +31,446+0.6% | Added |
| Glenview Capital Management, LLC | 2,415,990 | $4.32M | 0.12% | −1,800,000−42.7% | Reduced |
| State Street Corp | 2,083,293 | $3.73M | 0.00% | +422,554+25.4% | Added |
| Geode Capital Management, LLC | 1,858,730 | $3.33M | 0.00% | +130,091+7.5% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,626,985 | $2.91M | 0.00% | +502,283+44.7% | Added |
| Nikko Asset Management Americas, Inc. | 1,626,985 | $2.90M | 0.03% | +502,283+44.7% | Added |
| Foresite Capital Management V, LLC | 924,404 | $1.65M | 1.21% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 797,500 | $1.43M | 0.03% | +797,500 | New |
| Northern Trust Corp | 778,842 | $1.39M | 0.00% | +36,365+4.9% | Added |
| Fosun International Ltd | 743,935 | $1.33M | 0.19% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 709,035 | $1.27M | 0.01% | +91,961+14.9% | Added |
| Goldman Sachs Group Inc | 466,070 | $834.3K | 0.00% | +63,712+15.8% | Added |
| Bridgeway Capital Management, LLC | 356,700 | $638.5K | 0.02% | +50,000+16.3% | Added |
| Bank of New York Mellon Corp | 355,764 | $636.8K | 0.00% | +64,834+22.3% | Added |
| Knollwood Investment Advisory, LLC | 300,000 | $537.0K | 0.18% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 289,181 | $517.6K | 0.00% | −26,417−8.4% | Reduced |
| Morgan Stanley | 263,097 | $470.9K | 0.00% | −437−0.2% | Reduced |
| Charles Schwab Investment Management Inc | 261,577 | $468.2K | 0.00% | +23,349+9.8% | Added |
| Renaissance Technologies LLC | 223,256 | $400.0K | 0.00% | +110,400+97.8% | Added |
| Clearline Capital LP | 211,900 | $379.3K | 0.05% | 00.0% | Unchanged |
| Neumann Advisory Hong Kong Ltd | 192,857 | $345.0K | 0.13% | 00.0% | Unchanged |
| Invesco Ltd. | 177,947 | $318.5K | 0.00% | −991−0.6% | Reduced |
| Rhumbline Advisers | 138,752 | $248.4K | 0.00% | +2,330+1.7% | Added |
| Bank of America Corp | 125,243 | $224.2K | 0.00% | −76−0.1% | Reduced |
| D.A. Davidson & Co. | 125,000 | $223.8K | 0.00% | 00.0% | Unchanged |
| General American Investors Co Inc | 119,250 | $213.5K | 0.02% | 00.0% | Unchanged |
| Citadel Advisors LLC | 107,111 | $191.7K | 0.00% | +76,478+249.7% | Added |
| Susquehanna International Group, LLP | 93,182 | $166.8K | 0.00% | −5,867−5.9% | Reduced |
| Shay Capital LLC | 83,698 | $149.8K | 0.05% | +83,698 | New |
| JPMorgan Chase & Co | 81,925 | $146.6K | 0.00% | +8,028+10.9% | Added |
| Westchester Capital Management, LLC | 64,964 | $116.3K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 62,087 | $111.1K | 0.00% | −5,528−8.2% | Reduced |
| UBS Group AG | 61,986 | $111.0K | 0.00% | +22,355+56.4% | Added |
| MetLife Investment Management | 53,683 | $96.1K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 51,579 | $92.3K | 0.00% | +20,826+67.7% | Added |
| Barclays PLC | 49,777 | $89.1K | 0.00% | −26,358−34.6% | Reduced |
| Manufacturers Life Insurance Company, The | 49,008 | $87.7K | 0.00% | +10,879+28.5% | Added |
| American International Group, Inc. | 48,349 | $86.5K | 0.00% | +4,265+9.7% | Added |
| Price T Rowe Associates Inc | 47,381 | $85.0K | 0.00% | +1,030+2.2% | Added |
| Alliancebernstein L.P. | 45,740 | $81.9K | 0.00% | +14,240+45.2% | Added |
| Man Group plc | 44,653 | $79.9K | 0.00% | +44,653 | New |
| XTX Topco Ltd | 44,168 | $79.1K | 0.01% | +44,168 | New |
| Voya Investment Management LLC | 41,741 | $74.7K | 0.00% | +7,026+20.2% | Added |
| Principal Financial Group Inc | 41,696 | $74.6K | 0.00% | +10,148+32.2% | Added |
| Two Sigma Investments, LP | 37,091 | $66.4K | 0.00% | −5,937−13.8% | Reduced |
| Red Wave Investments LLC | 37,000 | $66.2K | 0.03% | 00.0% | Unchanged |
| Raymond James Financial Services Advisors, Inc. | 33,959 | $60.8K | 0.00% | −2,343−6.5% | Reduced |
| California State Teachers Retirement System | 33,415 | $59.8K | 0.00% | −544−1.6% | Reduced |
| Citigroup Inc | 33,163 | $59.4K | 0.00% | +31,799+2,331.3% | Added |
| Cambridge Investment Research Advisors, Inc. | 30,605 | $55.0K | 0.00% | +3,688+13.7% | Added |
| Jane Street Group, LLC | 27,299 | $48.9K | 0.00% | −103,738−79.2% | Reduced |
| New York State Common Retirement Fund | 25,910 | $46.4K | 0.00% | −103−0.4% | Reduced |
| Wealth Management Associates, Inc. | 25,900 | $46.4K | 0.03% | +3,900+17.7% | Added |
| Guidance Point Advisors, LLC | 25,742 | $46.1K | 0.02% | 00.0% | Unchanged |
| Round Rock Advisors, LLC | 21,885 | $39.2K | 0.01% | 00.0% | Unchanged |
| STRS Ohio | 21,300 | $38.0K | 0.00% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 20,934 | $37.5K | 0.00% | +1,587+8.2% | Added |
| ProShare Advisors LLC | 20,930 | $37.5K | 0.00% | +1,868+9.8% | Added |
| Royal Bank of Canada | 15,861 | $29.0K | 0.00% | +10,751+210.4% | Added |
| Tower Research Capital LLC (TRC) | 14,410 | $25.8K | 0.00% | −18,623−56.4% | Reduced |
| Mutual Advisors, LLC | 14,358 | $25.7K | 0.00% | +1,184+9.0% | Added |
| Flagship Private Wealth, LLC | 14,158 | $25.3K | 0.02% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 13,919 | $24.9K | 0.00% | −24,533−63.8% | Reduced |
| Procyon Private Wealth Partners, LLC | 13,671 | $24.5K | 0.00% | 00.0% | Unchanged |
| Pitcairn Co | 11,792 | $21.1K | 0.00% | +11,792 | New |
| Neuberger Berman Group LLC | 11,275 | $20.2K | 0.00% | +11,275 | New |
| FSA Wealth Management LLC | 11,150 | $20.0K | 0.01% | 00.0% | Unchanged |
| Victory Capital Management Inc | 10,370 | $18.6K | 0.00% | −241−2.3% | Reduced |
| Amalgamated Bank | 9,450 | $17.0K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,294 | $16.6K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 9,322 | $16.0K | 0.00% | +4,043+76.6% | Added |
| Leonteq Securities AG | 7,500 | $13.4K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 6,850 | $12.3K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 5,570 | $9.97K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 3,534 | $6.33K | 0.00% | +2,526+250.6% | Added |
| Group One Trading, L.P. | 3,154 | $5.65K | 0.00% | +1,600+103.0% | Added |
| Advisor Group Holdings, Inc. | 2,170 | $3.88K | 0.00% | −1,000−31.5% | Reduced |
| China Universal Asset Management Co., Ltd. | 1,593 | $2.85K | 0.00% | −31−1.9% | Reduced |
| Archer Investment Corp | 1,399 | $2.50K | 0.00% | +1,399 | New |
| Allworth Financial LP | 836 | $1.50K | 0.00% | +336+67.2% | Added |
| US Bancorp | 800 | $1.43K | 0.00% | 00.0% | Unchanged |
| Johnson Midwest Financial, LLC | 770 | $1.38K | 0.00% | 00.0% | Unchanged |
| First Manhattan Co | 600 | $1.07K | 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 |
| GWM Advisors LLC | 492 | $880 | 0.00% | 00.0% | Unchanged |
| Eagle Bay Advisors LLC | 277 | $496 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 50 | $90 | 0.00% | +50 | New |
| Nisa Investment Advisors, LLC | 38 | $68 | 0.00% | +38 | New |
| 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 |