Who owns QUANTUM SI INC?
- Ticker: QSI
- CUSIP Number: 74765k105
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Analyze quarterly positions in Quantum Si with up to 7 years of data, all consolidated into one spreadsheet
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Top investors of Quantum Si stock
Who bought or sold QUANTUM SI INC this quarter?
| Fund or Company Name | Shares Held | Valued At | Change in Shares | As Of | Actions |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.6M | $6.7M | 8% | Jun 2026 |
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| ARK Investment Management | 7.2M | $6.3M | 4% | Jun 2026 |
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| BlackRock | 5.2M | $4.6M | -61% | Jun 2026 |
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| Sumitomo Mitsui Trust Holdings | 3.9M | $3.4M | -12% | Jun 2026 |
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| Nikko Asset Management Americas | 3.9M | $3.5M | -12% | Jun 2026 |
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| Millennium Management | 3.1M | $2.8M | 100% | Jun 2026 |
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| UBS Group | 2.6M | $2.3M | 50% | Jun 2026 |
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| Jane Street | 2.4M | $2.1M | 758% | Jun 2026 |
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| AQR Capital Management | 2.3M | $2.1M | -2% | Jun 2026 |
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| Geode Capital Management | 2.2M | $2.0M | -42% | Jun 2026 |
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| Susquehanna International | 1.5M | $1.4M | -21% | Jun 2026 |
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| Vanguard Fiduciary Trust | 1.1M | $988k | 0% | Jun 2026 |
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| State Street Corporation | 891k | $788k | -76% | Jun 2026 |
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| Fosun International | 744k | $658k | 0% | Jun 2026 |
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| Renaissance Technologies | 554k | $490k | 370% | Jun 2026 |
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| Vanguard Portfolio Management | 497k | $440k | -67% | Jun 2026 |
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| Goldman Sachs Group | 476k | $422k | 7% | Jun 2026 |
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| Northern Trust | 451k | $399k | -64% | Jun 2026 |
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| Invesco | 444k | $393k | 9% | Jun 2026 |
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| Bnp Paribas Arbitrage, Snc | 399k | $353k | 938% | Jun 2026 |
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| Ieq Capital | 351k | $311k | -2% | Jun 2026 |
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| Aster Capital Management | 345k | $305k | 100% | Jun 2026 |
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| Citadel Advisors | 333k | $295k | 52% | Jun 2026 |
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| Davy Asset Management | 321k | $284k | 10% | Jun 2026 |
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| Knollwood Investment Advisory | 300k | $266k | 0% | Jun 2026 |
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| IMC-Chicago | 286k | $253k | 29% | Jun 2026 |
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| Bridgeway Capital Management | 206k | $182k | -21% | Jun 2026 |
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| Barclays | 206k | $182k | 426% | Jun 2026 |
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| XTX Topco | 178k | $157k | -54% | Jun 2026 |
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| Simplex Trading | 165k | $146k | 83% | Jun 2026 |
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| Mariner Wealth Advisors | 158k | $140k | -21% | Jun 2026 |
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| Shay Capital | 151k | $134k | 0% | Jun 2026 |
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| Verdence Capital Advisors | 133k | $143k | -16% | Sep 2026 |
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| FMR | 124k | $110k | 287% | Jun 2026 |
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| Group One Trading | 108k | $95k | -62% | Jun 2026 |
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| Jones Financial Companies, L.L | 101k | $86k | -9% | Jun 2026 |
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| Hrt Financial | 94k | $82k | 100% | Jun 2026 |
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| AlphaCore Capital | 89k | $79k | -30% | Jun 2026 |
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| HPM Partners | 85k | $76k | 6% | Jun 2026 |
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| Vanguard Global Advisers | 85k | $75k | 0% | Jun 2026 |
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| Charles Schwab Investment Management | 85k | $75k | -82% | Jun 2026 |
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| Sixth Street Partners Management Company | 85k | $75k | 100% | Jun 2026 |
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| JTC Employer Solutions Trustee | 78k | $69k | 125% | Jun 2026 |
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| Mercer Global Advisors | 77k | $68k | 40% | Jun 2026 |
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| Rhumbline Advisers | 76k | $67k | -61% | Jun 2026 |
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| Winton Capital | 76k | $67k | 100% | Jun 2026 |
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| Captrust Financial Advisors | 73k | $65k | 6% | Jun 2026 |
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| Hollencrest Securities | 65k | $58k | 62% | Jun 2026 |
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| GSA Capital Partners | 60k | $53k | 100% | Jun 2026 |
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| Bank of America Corporation | 60k | $53k | -63% | Jun 2026 |
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| Creative Planning | 56k | $50k | 6% | Jun 2026 |
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| Atom Investors | 52k | $46k | 100% | Jun 2026 |
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| Green Alpha Advisors | 47k | $51k | 3% | Sep 2026 |
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| Sanctuary Advisors | 41k | $37k | -3% | Jun 2026 |
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| Stratos Wealth Advisors | 40k | $35k | 166% | Jun 2026 |
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| Point72 Asset Management | 39k | $35k | 100% | Jun 2026 |
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| Brighton Jones | 39k | $34k | 100% | Jun 2026 |
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| CI Private Wealth | 38k | $34k | 100% | Jun 2026 |
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| Cambridge Investment Research Advisors | 38k | $33k | -10% | Jun 2026 |
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| Red Wave Investments | 37k | $33k | 0% | Jun 2026 |
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| SRS Capital Advisors | 37k | $33k | 2597% | Jun 2026 |
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| SBI Securities | 36k | $39k | 9% | Sep 2026 |
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| China Universal Asset Management | 32k | $28k | -9% | Jun 2026 |
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| Kovack Advisors | 31k | $27k | 3% | Jun 2026 |
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| IPG Investment Advisors | 31k | $27k | 100% | Jun 2026 |
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| Nuveen | 30k | $27k | -93% | Jun 2026 |
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| Commonwealth Equity Services | 27k | $24k | -9% | Jun 2026 |
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| Wealth Management Associates | 26k | $23k | -2% | Jun 2026 |
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| Tower Research Capital | 24k | $21k | -5% | Jun 2026 |
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| DLK Investment Management | 24k | $25k | 25% | Sep 2026 |
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| Merit Financial Group | 24k | $21k | -35% | Jun 2026 |
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| Pallas Capital Advisors | 23k | $21k | -9% | Jun 2026 |
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| Leonteq Securities | 23k | $20k | -10% | Jun 2026 |
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| Neuberger Berman Group | 22k | $19k | 100% | Jun 2026 |
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| LPL Financial | 21k | $19k | -7% | Jun 2026 |
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| JustInvest | 20k | $18k | -15% | Jun 2026 |
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| Capital Investment Advisory Services | 20k | $18k | 0% | Jun 2026 |
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| HBW Advisory Services | 20k | $21k | -11% | Sep 2026 |
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| Victory Capital Management | 20k | $17k | -1% | Jun 2026 |
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| Bank of New York Mellon | 19k | $17k | -95% | Jun 2026 |
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| Y-Intercept | 18k | $19k | -78% | Sep 2026 |
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| SG Americas Securities | 18k | $15k | -48% | Jun 2026 |
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| Colony | 17k | $15k | -27% | Jun 2026 |
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| Jpmorgan Chase & Co | 17k | $15k | 100% | Jun 2026 |
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| Flagship Private Wealth | 14k | $13k | 0% | Jun 2026 |
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| Procyon Private Wealth Partners | 14k | $15k | 0% | Sep 2026 |
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| Balyasny Asset Management | 14k | $12k | 100% | Jun 2026 |
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| Raymond James Financial | 13k | $12k | 100% | Jun 2026 |
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| Laurion Capital Management | 13k | $11k | 100% | Jun 2026 |
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| Callan Family Office | 12k | $11k | 100% | Jun 2026 |
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| Leucadia National Corporation | 11k | $10k | 100% | Jun 2026 |
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| Integrated Wealth Concepts | 11k | $10k | -22% | Jun 2026 |
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| Goss Wealth Management | 11k | $9.9k | -29% | Jun 2026 |
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| Schonfeld Strategic Advisors | 10k | $9.2k | 100% | Jun 2026 |
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| Cresset Asset Management | 10k | $9.0k | 0% | Jun 2026 |
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| Red Reef Advisors | 10k | $8.9k | 0% | Jun 2026 |
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| Kestra Private Wealth Services | 10k | $8.9k | 0% | Jun 2026 |
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| Verde Capital Management | 10k | $8.9k | 100% | Jun 2026 |
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| Glen Eagle Advisors | 10k | $8.9k | 0% | Jun 2026 |
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| Royal Bank of Canada | 8.5k | $0 | 7666% | Jun 2026 |
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| Advisor Group Holdings | 7.8k | $7.0k | -2% | Jun 2026 |
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| Russell Investments | 7.6k | $6.7k | -36% | Jun 2026 |
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| EverSource Wealth Advisors | 5.4k | $4.8k | -1% | Jun 2026 |
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| Hanson McClain Advisors | 4.8k | $4.3k | -30% | Jun 2026 |
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| Gf Fund Management | 4.2k | $4.5k | 0% | Sep 2026 |
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| MTM Investment Management | 4.1k | $3.7k | 0% | Jun 2026 |
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| FNY Investment Advisers | 4.0k | $4.0k | 0% | Sep 2026 |
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| N.E.W. Advisory Services | 3.9k | $3.4k | 0% | Jun 2026 |
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| Pinney & Scofield | 3.7k | $3.3k | 0% | Jun 2026 |
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| Archer Investment Corp | 2.0k | $1.8k | 0% | Jun 2026 |
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| Steward Partners Investment Advisory | 2.0k | $1.8k | 0% | Jun 2026 |
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| Rothschild Investment | 1.4k | $1.3k | -15% | Jun 2026 |
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| Bangor Savings Bank | 1.0k | $1.1k | 100% | Sep 2026 |
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| Rialto Wealth Management | 562.00 | $497.988200 | 10% | Jun 2026 |
|
| TD Waterhouse Canada | 300.00 | $426.000000 | 0% | Sep 2026 |
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| Larson Financial Group | 300.00 | $266.010000 | 100% | Jun 2026 |
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| Harbour Investments | 299.00 | $265.003700 | 20% | Jun 2026 |
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| Medallion Wealth Advisors | 242.00 | $213.008400 | -49% | Jun 2026 |
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| Fortitude Family Office | 197.00 | $211.006700 | -84% | Sep 2026 |
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| GAMMA Investing | 169.00 | $180.999000 | -88% | Sep 2026 |
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| Transamerica Financial Advisors | 132.00 | $116.001600 | 100% | Jun 2026 |
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| Hartland & Co | 53.00 | $47.000400 | 100% | Jun 2026 |
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| Federation des caisses Desjardins du Quebec | 50.00 | $44.000000 | 0% | Jun 2026 |
|
| Optiver Holding B.V. | 30.00 | $27.000000 | -96% | Jun 2026 |
|
| JPL Wealth Management | 26.00 | $24.000600 | 100% | Jun 2026 |
|
| Root Financial Partners | 23.00 | $25.001000 | 100% | Sep 2026 |
|
| Monetary Solutions | 13.00 | $13.999700 | 100% | Sep 2026 |
|
| IFP Advisors | 3.00 | $3.000000 | -100% | Sep 2026 |
|
| Caitong International Asset Management | 1.00 | $1.000000 | -100% | Jun 2026 |
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