Quantum-SiQSI
13F holders, Q1 2025 (March 31)137holders +16
38new positions
22sold out
5famous investors
$1.20avg. 13F price*
At the end of Q1 2025, 137 institutions reported holding Quantum-Si Inc. (QSI) in their 13F filings, up 16 from Q4 2024. 38 opened new positions and 22 sold out. The largest holders were BlackRock, Inc. ($11.3M), ARK Investment Management ($10.5M) and Vanguard Group Inc. ($8.3M). 5 famous investors held it, including Cathie Wood (0.1% of ARK Investment Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Quantum-Si Inc.
- CUSIP
- 74765K105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 38 | $6.0M |
| Exits | 22 | $1.2M |
All 13F filers, Q4 2024 → Q1 2025: 10,024,832 shares bought and 5,906,666 shares sold, net +4,118,166 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 137 holders
| BlackRock, Inc. | 0.00% | Add +11.9% | 9,440,243 | $11.3M |
| ARK Investment Management | 0.10% | Reduce -1.5% | 8,713,501 | $10.5M |
| Vanguard Group Inc. | 0.00% | Add +25.5% | 6,892,862 | $8.3M |
| Sumitomo Mitsui Trust Group, Inc. | 0.00% | Reduce -2.6% | 5,811,430 | $7.0M |
| Amova Asset Management Americas, Inc. | 0.09% | Reduce -2.6% | 5,811,430 | $6.9M |
| Millennium Management | 0.00% | New | 3,934,285 | $4.7M |
| Geode Capital Management, LLC | 0.00% | Add +26.4% | 2,994,888 | $3.6M |
| State Street Corp. | 0.00% | Add +2.0% | 2,454,106 | $2.9M |
| Northern Trust Corp. | 0.00% | Add +21.5% | 1,022,118 | $1.2M |
| Renaissance Technologies | 0.00% | Add +60.0% | 871,756 | $1.0M |
| Two Sigma Investments, LP | 0.00% | Add +435.1% | 816,975 | $980K |
| Susquehanna International Group, LLP | 0.00% | Reduce -20.5% | 796,930 | $956K |
| Fosun International Ltd | 0.25% | No change | 743,935 | $893K |
| UBS Group AG | 0.00% | Reduce -24.1% | 449,682 | $540K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -56.0% | 441,314 | $530K |
| XTX Topco Ltd | 0.02% | Add +50.2% | 368,968 | $443K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +19.3% | 367,444 | $441K |
| Nuveen, LLC | 0.00% | — | 319,100 | $383K |
| Knollwood Investment Advisory, LLC | 0.04% | No change | 300,000 | $360K |
| Bank of New York Mellon Corp | 0.00% | Add +9.3% | 294,906 | $354K |
| Morgan Stanley | 0.00% | Reduce -91.7% | 287,488 | $345K |
| Gsa Capital Partners LLP | 0.03% | Reduce -34.2% | 246,192 | $295K |
| Green Alpha Advisors, LLC | 0.31% | Add +53.6% | 244,067 | $293K |
| Pathstone Holdings, LLC | 0.00% | Add +66.7% | 214,309 | $257K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -33.8% | 196,100 | $235K |
| Rhumbline Advisers | 0.00% | Add +0.7% | 149,973 | $180K |
| Citadel Advisors | 0.00% | New | 138,498 | $166K |
| Guggenheim Capital LLC | 0.00% | Reduce -35.5% | 129,021 | $155K |
| Shay Capital LLC | 0.04% | Reduce -40.7% | 128,500 | $154K |
| Barclays PLC | 0.00% | Reduce -19.7% | 120,888 | $145K |
| Alliancebernstein L.P. | 0.00% | Add +44.8% | 110,180 | $132K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -0.9% | 108,174 | $130K |
| Invesco Ltd. | 0.00% | Add +177.7% | 103,657 | $124K |
| AQR Capital Management | 0.00% | Reduce -6.2% | 96,042 | $115K |
| Raymond James Financial Inc. | 0.00% | New | 92,875 | $111K |
| Bank of America Corp. | 0.00% | Reduce -20.9% | 88,495 | $106K |
| Citigroup Inc. | 0.00% | Reduce -6.4% | 84,459 | $101K |
| Wells Fargo & Company | 0.00% | Add +15.8% | 83,333 | $100K |
| Jefferies Financial Group Inc. | 0.00% | New | 83,031 | $100K |
| FMR LLC | 0.00% | Reduce -0.9% | 79,623 | $96K |
| Two Sigma Advisers, LP | 0.00% | New | 78,900 | $95K |
| Ewa, LLC | 0.04% | New | 78,688 | $94K |
| Sculptor Capital LP | 0.00% | New | 78,200 | $94K |
| MetLife Investment Management, LLC | 0.00% | New | 76,015 | $91K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +23.8% | 70,552 | $85K |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.01% | Add +106.3% | 69,944 | $84K |
| Deutsche Bank AG | 0.00% | Add +107.4% | 67,522 | $81K |
| Intech Investment Management LLC | 0.00% | Add +20.7% | 61,365 | $74K |
| Callan Capital, LLC | 0.01% | Add +464.4% | 60,950 | $73K |
| Corebridge Financial, Inc. | 0.00% | Add +18.3% | 58,876 | $71K |
| JPMorgan Chase & Co. | 0.00% | Add +28.5% | 57,651 | $69K |
| Two Sigma Securities, LLC | 0.01% | New | 52,220 | $63K |
| Mariner, LLC | 0.00% | Add +43.6% | 48,005 | $58K |
| Wolverine Trading, LLC | 0.00% | Reduce -63.9% | 40,458 | $51K |
| Simplex Trading, LLC | 0.00% | Reduce -86.0% | 42,909 | $51K |
| Commonwealth Equity Services, LLC | 0.00% | Add +31.8% | 40,868 | $49K |
| SG Americas Securities, LLC | 0.00% | Reduce -40.7% | 40,079 | $48K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | No change | 38,867 | $47K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +10.5% | 38,518 | $46K |
| Russell Investments Group, Ltd. | 0.00% | Add +322.6% | 38,257 | $46K |
| Red Wave Investments LLC | 0.02% | No change | 37,000 | $44K |
| Sanctuary Advisors, LLC | 0.00% | Add +4.4% | 36,782 | $44K |
| Virtu Financial LLC | 0.00% | New | 34,830 | $42K |
| Captrust Financial Advisors | 0.00% | New | 34,583 | $42K |
| Sei Investments Co. | 0.00% | No change | 33,103 | $40K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 31,134 | $37K |
| Atom Investors LP | 0.00% | New | 30,172 | $36K |
| Voya Investment Management LLC | 0.00% | Reduce -4.3% | 29,552 | $35K |
| Mercer Global Advisors Inc. | 0.00% | Reduce -12.4% | 27,113 | $33K |
| Wealth Management Associates, Inc. | 0.01% | Reduce -23.1% | 26,950 | $32K |
| Cibc World Markets Corp. | 0.00% | New | 26,667 | $32K |
| New York State Common Retirement Fund | 0.00% | No change | 26,084 | $31K |
| ProShare Advisors LLC | 0.00% | Reduce -7.8% | 26,016 | $31K |
| Leonteq Securities AG | 0.00% | New | 25,000 | $30K |
| HBW Advisory Services LLC | 0.00% | New | 24,243 | $29K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +17.7% | 23,477 | $28K |
| WestHill Financial Advisors, Inc. | 0.01% | New | 21,727 | $26K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -9.9% | 21,026 | $25K |
| LPL Financial LLC | 0.00% | New | 20,112 | $24K |
| Cibc World Market Inc. | 0.00% | New | 20,011 | $24K |
| Hollencrest Capital Management | 0.00% | New | 20,000 | $24K |
| Cetera Investment Advisers | 0.00% | Add +42.8% | 19,101 | $23K |
| DLK Investment Management, LLC | 0.01% | No change | 19,000 | $23K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -14.8% | 18,970 | $23K |
| Stratos Wealth Advisors, LLC | 0.00% | New | 18,310 | $22K |
| Victory Capital Management Inc. | 0.00% | Add +37.5% | 16,593 | $20K |
| Neuberger Berman Group LLC | 0.00% | New | 15,919 | $19K |
| Kestra Advisory Services, LLC | 0.00% | New | 15,090 | $18K |
| Mark Sheptoff Financial Planning, LLC | 0.01% | Add +107.1% | 14,500 | $17K |
| Flagship Private Wealth, LLC | 0.01% | No change | 14,158 | $17K |
| HSBC Holdings PLC | 0.00% | Add +19.1% | 13,987 | $17K |
| Procyon Advisors, LLC | 0.00% | No change | 13,671 | $16K |
| Royal Bank of Canada | 0.00% | Add +6.4% | 13,429 | $16K |
| State Board of Administration of Florida Retirement System | 0.00% | New | 12,300 | $15K |
| Dash Acquisitions Inc. | 0.00% | New | 10,000 | $15K |
| Abel Hall, LLC | 0.01% | Add +15.1% | 12,008 | $14K |
| Thoroughbred Financial Services, LLC | 0.00% | Reduce -63.6% | 12,000 | $14K |
| National Bank of Canada | 0.00% | New | 11,100 | $13K |
| Principal Securities, Inc. | 0.00% | No change | 4,912 | $13K |
| Freedom Investment Management, Inc. | 0.00% | Reduce -32.9% | 11,051 | $13K |
"% of holder's portfolio" is QSI's weight in each manager's 13F, not the share of Quantum-Si Inc. the manager owns.