Quantum-SiQSI
13F holders, Q2 2025 (June 30)135holders −2
15new positions
16sold out
5famous investors
$1.96avg. 13F price*
At the end of Q2 2025, 135 institutions reported holding Quantum-Si Inc. (QSI) in their 13F filings, down 2 from Q1 2025. 15 opened new positions and 16 sold out. The largest holders were BlackRock, Inc. ($21.3M), Vanguard Group Inc. ($17.0M) and ARK Investment Management ($15.6M). 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 Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Quantum-Si Inc.
- CUSIP
- 74765K105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 15 | $1.7M |
| Exits | 16 | $484K |
All 13F filers, Q1 2025 → Q2 2025: 10,091,872 shares bought and 3,436,321 shares sold, net +6,655,551 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 135 holders
| BlackRock, Inc. | 0.00% | Add +14.9% | 10,848,142 | $21.3M |
| Vanguard Group Inc. | 0.00% | Add +25.8% | 8,669,661 | $17.0M |
| ARK Investment Management | 0.11% | Reduce -8.6% | 7,960,736 | $15.6M |
| Amova Asset Management Americas, Inc. | 0.11% | Reduce -3.3% | 5,621,303 | $11.0M |
| Sumitomo Mitsui Trust Group, Inc. | 0.01% | Reduce -3.3% | 5,621,303 | $11.0M |
| Millennium Management | 0.01% | Reduce -3.9% | 3,779,259 | $7.4M |
| Geode Capital Management, LLC | 0.00% | Add +15.1% | 3,447,738 | $6.8M |
| State Street Corp. | 0.00% | Add +12.3% | 2,756,437 | $5.4M |
| Northern Trust Corp. | 0.00% | Add +124.0% | 2,289,456 | $4.5M |
| Nuveen, LLC | 0.00% | Add +252.9% | 1,126,084 | $2.2M |
| Susquehanna International Group, LLP | 0.00% | Add +23.7% | 986,084 | $1.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +102.6% | 894,100 | $1.8M |
| UBS Group AG | 0.00% | Add +75.6% | 789,570 | $1.5M |
| Fosun International Ltd | 0.41% | No change | 743,935 | $1.5M |
| Two Sigma Investments, LP | 0.00% | Reduce -30.9% | 564,442 | $1.1M |
| Citadel Advisors | 0.00% | Add +303.1% | 558,307 | $1.1M |
| Bank of America Corp. | 0.00% | Add +426.6% | 465,999 | $913K |
| Royal Bank of Canada | 0.00% | Add +3327.6% | 460,289 | $902K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +17.4% | 431,447 | $846K |
| Bank of New York Mellon Corp | 0.00% | Add +19.6% | 352,732 | $691K |
| Knollwood Investment Advisory, LLC | 0.06% | No change | 300,000 | $588K |
| Morgan Stanley | 0.00% | Add +0.8% | 289,913 | $568K |
| Jane Street Group, LLC | 0.00% | New | 284,753 | $558K |
| Gsa Capital Partners LLP | 0.04% | Add +15.5% | 284,363 | $557K |
| Alliancebernstein L.P. | 0.00% | Add +147.0% | 272,180 | $533K |
| Barclays PLC | 0.00% | Add +97.7% | 239,001 | $468K |
| Green Alpha Advisors, LLC | 0.43% | Reduce -6.4% | 228,348 | $448K |
| Ameriprise Financial Inc. | 0.00% | New | 223,100 | $437K |
| Rhumbline Advisers | 0.00% | Add +36.0% | 203,967 | $400K |
| Pathstone Holdings, LLC | 0.00% | Reduce -7.2% | 198,798 | $390K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 196,100 | $384K |
| Invesco Ltd. | 0.00% | Add +88.5% | 195,450 | $383K |
| Group One Trading LLC | 0.01% | New | 134,632 | $264K |
| Shay Capital LLC | 0.06% | Add +0.9% | 129,631 | $254K |
| AQR Capital Management | 0.00% | Add +26.7% | 121,703 | $239K |
| T. Rowe Price Associates Inc. | 0.00% | Add +11.4% | 120,506 | $237K |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.02% | Add +67.0% | 116,828 | $229K |
| Simplex Trading, LLC | 0.01% | Add +145.9% | 105,534 | $206K |
| Wells Fargo & Company | 0.00% | Add +22.1% | 101,716 | $199K |
| Deutsche Bank AG | 0.00% | Add +45.9% | 98,532 | $193K |
| Renaissance Technologies | 0.00% | Reduce -89.8% | 89,200 | $175K |
| Intech Investment Management LLC | 0.00% | Add +44.2% | 88,497 | $173K |
| AlphaCore Capital LLC | 0.01% | New | 83,950 | $165K |
| Sculptor Capital LP | 0.00% | No change | 78,200 | $153K |
| MetLife Investment Management, LLC | 0.00% | Add +1.7% | 77,316 | $152K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +9.4% | 77,215 | $151K |
| Ewa, LLC | 0.04% | Reduce -13.3% | 68,200 | $134K |
| JPMorgan Chase & Co. | 0.00% | Add +15.6% | 66,656 | $131K |
| Axq Capital, LP | 0.04% | New | 57,000 | $112K |
| Mariner, LLC | 0.00% | Add +5.4% | 50,594 | $99K |
| Citigroup Inc. | 0.00% | Reduce -41.9% | 49,107 | $96K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +27.4% | 49,082 | $96K |
| Jones Financial Companies LLLP | 0.00% | Add +1463.3% | 46,900 | $91K |
| XTX Topco Ltd | 0.00% | Reduce -87.4% | 46,474 | $91K |
| Wolverine Trading, LLC | 0.00% | Reduce -0.1% | 40,425 | $79K |
| Voya Investment Management LLC | 0.00% | Add +31.5% | 38,863 | $76K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | No change | 38,867 | $76K |
| Two Sigma Securities, LLC | 0.01% | Reduce -27.5% | 37,861 | $74K |
| Red Wave Investments LLC | 0.02% | No change | 37,000 | $73K |
| Sanctuary Advisors, LLC | 0.00% | Reduce -1.2% | 36,337 | $71K |
| Captrust Financial Advisors | 0.00% | Reduce -0.8% | 34,310 | $67K |
| Sei Investments Co. | 0.00% | No change | 33,103 | $65K |
| SG Americas Securities, LLC | 0.00% | Reduce -19.7% | 32,181 | $63K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 31,134 | $61K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -21.8% | 29,901 | $59K |
| ProShare Advisors LLC | 0.00% | Add +11.2% | 28,924 | $57K |
| Wealth Management Associates, Inc. | 0.02% | No change | 26,950 | $53K |
| SBI Securities Co., Ltd. | 0.00% | Add +37.8% | 26,141 | $51K |
| New York State Common Retirement Fund | 0.00% | No change | 26,084 | $51K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -37.6% | 25,515 | $50K |
| Mercer Global Advisors Inc. | 0.00% | Reduce -6.8% | 25,260 | $50K |
| Leonteq Securities AG | 0.00% | No change | 25,000 | $49K |
| Hollencrest Capital Management | 0.00% | Add +25.0% | 25,000 | $49K |
| HBW Advisory Services LLC | 0.01% | Add +0.0% | 24,253 | $48K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +2.6% | 24,091 | $47K |
| LPL Financial LLC | 0.00% | Add +15.8% | 23,290 | $46K |
| Atom Investors LP | 0.00% | Reduce -31.1% | 20,803 | $41K |
| Kingsview Wealth Management, LLC | 0.00% | Add +99.9% | 20,012 | $39K |
| Jefferies Financial Group Inc. | 0.00% | Reduce -75.9% | 20,000 | $39K |
| DLK Investment Management, LLC | 0.01% | Add +4.0% | 19,750 | $39K |
| Cetera Investment Advisers | 0.00% | Reduce -1.7% | 18,771 | $37K |
| FMR LLC | 0.00% | Reduce -76.7% | 18,520 | $36K |
| Stratos Wealth Advisors, LLC | 0.00% | Reduce -2.5% | 17,860 | $35K |
| Cibc World Markets Corp. | 0.00% | Reduce -34.8% | 17,379 | $34K |
| Wolverine Asset Management LLC | 0.00% | Add +140.0% | 16,501 | $32K |
| Victory Capital Management Inc. | 0.00% | Reduce -2.3% | 16,217 | $32K |
| BNP Paribas Financial Markets | 0.00% | Add +75.6% | 15,133 | $30K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -29.1% | 14,907 | $29K |
| Cerity Partners LLC | 0.00% | New | 14,881 | $29K |
| Mark Sheptoff Financial Planning, LLC | 0.02% | No change | 14,500 | $28K |
| Ameritas Investment Partners, Inc. | 0.00% | Add +45.4% | 14,401 | $28K |
| Flagship Private Wealth, LLC | 0.01% | No change | 14,158 | $28K |
| Cibc World Market Inc. | 0.00% | Reduce -30.0% | 14,011 | $27K |
| HSBC Holdings PLC | 0.00% | Reduce -1.9% | 13,717 | $27K |
| Procyon Advisors, LLC | 0.00% | No change | 13,671 | $27K |
| Neuberger Berman Group LLC | 0.00% | Reduce -15.6% | 13,430 | $26K |
| JTC Employer Solutions Trustee Ltd | 0.00% | New | 13,340 | $26K |
| Legal & General Group Plc | 0.00% | Add +38.4% | 12,860 | $25K |
| Prudential Financial Inc. | 0.00% | New | 12,850 | $25K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 12,300 | $24K |
| American Century Companies Inc. | 0.00% | New | 12,036 | $24K |
| Xponance LLC | 0.00% | New | 11,051 | $22K |
| Callan Family Office, LLC | 0.00% | New | 10,379 | $20K |
| NewEdge Advisors, LLC | 0.00% | No change | 10,250 | $20K |
| Kestra Advisory Services, LLC | 0.00% | Reduce -32.9% | 10,132 | $20K |
| Ground Swell Capital, LLC | 0.03% | New | 10,100 | $20K |
| TriaGen Wealth Management LLC | 0.01% | No change | 10,000 | $20K |
| Glen Eagle Advisors, LLC | 0.00% | No change | 10,000 | $20K |
| Capital Investment Advisory Services, LLC | 0.00% | No change | 10,000 | $20K |
| Headlands Technologies LLC | 0.00% | Add +2768.3% | 9,322 | $18K |
| California State Teachers Retirement System | 0.00% | Add +21.3% | 8,801 | $17K |
| Cwm, LLC | 0.00% | Add +149.1% | 8,911 | $17K |
| Belvedere Trading LLC | 0.00% | New | 7,222 | $14K |
| Principal Securities, Inc. | 0.00% | Add +35.2% | 6,641 | $13K |
| MTM Investment Management, LLC | 0.00% | New | 4,125 | $8K |
| Amalgamated Bank | 0.00% | No change | 4,142 | $8K |
| N.E.W. Advisory Services LLC | 0.00% | No change | 3,854 | $8K |
| Raymond James Financial Inc. | 0.00% | Reduce -96.0% | 3,700 | $7K |
| Pinney & Scofield, Inc. | 0.00% | No change | 3,680 | $7K |
| FNY Investment Advisers, LLC | 0.00% | No change | 4,000 | $7K |
| Sterling Capital Management LLC | 0.00% | Add +63.7% | 3,395 | $7K |
| Archer Investment Corp | 0.00% | No change | 2,000 | $4K |
| Talon Private Wealth, LLC | 0.00% | New | 2,000 | $4K |
| Nisa Investment Advisors, LLC | 0.00% | Add +18.6% | 1,324 | $3K |
| Osaic Holdings, Inc. | 0.00% | Add +12.3% | 1,258 | $2K |
| Allworth Financial LP | 0.00% | No change | 836 | $2K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +48.6% | 828 | $2K |
| TD Waterhouse Canada Inc. | 0.00% | No change | 800 | $2K |
| National Bank of Canada | 0.00% | Reduce -94.6% | 600 | $1K |
| PNC Financial Services Group, Inc. | 0.00% | Add +12.1% | 548 | $1K |
| Bangor Savings Bank | 0.00% | No change | 400 | $784 |
| Medallion Wealth Advisors, LLC | 0.00% | Reduce -7.3% | 242 | $460 |
| FSA Wealth Management LLC | 0.00% | No change | 100 | $196 |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 50 | $98 |
| Capital Advisors, Ltd. LLC | 0.00% | Reduce -3.3% | 58 | $0 |
"% of holder's portfolio" is QSI's weight in each manager's 13F, not the share of Quantum-Si Inc. the manager owns.