QSI QUANTUM SI INC
FollowCOM CL A (common), issuer CIK 1816431
Filings received so far for Q3 2026: 4 13F filers report a position in QSI shares at 2026-09-30. The quarter is not complete: its 13F deadline is 2026-11-14, and the counts grow as filings arrive.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q3 2026
Filers in the available 13F reports with a share position at 2026-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| Green Alpha Advisors, LLC | 47,397 | $50.7K | 0.03% | +1,476 | 13F-HRTimeline |
| DLK Investment Management, LLC | 23,727 | $25.4K | 0.01% | +4,727 | 13F-HRTimeline |
| Bangor Savings Bank | 1,000 | $1.07K | <0.01% | +500 | 13F-HRTimeline |
| GAMMA Investing LLC | 169 | $181 | <0.01% | -1,204 | 13F-HRTimeline |