Who owns Quantum-Si Inc (QSI)?
12 US mutual funds and ETFs from 9 fund families reported a position in QSI for the quarter ending 2026-06-30. Against their own report a quarter earlier, 4 raised shares, 0 opened a new position, 3 cut and 42 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Vanguard Index Funds | 2 | 77.5% |
| Ishares Trust | 2 | 17.2% |
| Bridgeway Funds, Inc. | 1 | 2.1% |
| Vanguard Valley Forge Funds | 1 | 0.9% |
| Vanguard Institutional Index Funds | 1 | 0.7% |
| Bridge Builder Trust | 1 | 0.7% |
Tracked managers holding QSI
None of the managers Prior Moves tracks on 13F reports QSI in its latest filing.
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about QSI. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
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