QUANTUM SI INC's ticker is and the CUSIP is 74765K955. A total of 3 filers reported holding QUANTUM SI INC in Q1 2023. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $6 | – | 4,200 | +4100.0% | 0.00% | – |
| Q2 2023 | $0 | – | 100 | -50.0% | 0.00% | – |
| Q1 2023 | $0 | -100.0% | 200 | -98.4% | 0.00% | – |
| Q4 2022 | $22 | -99.9% | 12,300 | -10.2% | 0.00% | – |
| Q3 2022 | $37,000 | -28.8% | 13,700 | -39.6% | 0.00% | – |
| Q2 2022 | $52,000 | +85.7% | 22,700 | +272.1% | 0.00% | – |
| Q1 2022 | $28,000 | -15.2% | 6,100 | +45.2% | 0.00% | – |
| Q4 2021 | $33,000 | -97.8% | 4,200 | -96.6% | 0.00% | -100.0% |
| Q3 2021 | $1,483,000 | -1.6% | 123,000 | 0.0% | 0.00% | 0.0% |
| Q2 2021 | $1,507,000 | – | 123,000 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% |
| GROUP ONE TRADING, L.P. | 400 | $704 | 0.00% |
| SIMPLEX TRADING, LLC | 200 | $0 | 0.00% |