QSI — Quantum Si Inc Institutional Holders · Q3 2026
Who owns Quantum Si Inc (QSI)? 5 institutions reported holding $77,354 in SEC 13F filings for Q3 2026 (period ended 2026-09-30). Largest holders: Green Alpha Advisors, LLC ($50,715), DLK Investment Management, LLC ($25,388), Bangor Savings Bank ($1,070).
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Green Alpha Advisors, LLC | $50,715 | 47,397 | Added |
| 2 | DLK Investment Management, LLC | $25,388 | 23,727 | Added |
| 3 | Bangor Savings Bank | $1,070 | 1,000 | Added |
| 4 | GAMMA Investing LLC | $181 | 169 | Trimmed |
| 5 | Farther Finance Advisors, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-09-30