QUANTUM SI INC's ticker is and the CUSIP is 74765K905. 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 | $946,366 | +2543.5% | 570,100 | +2750.5% | 0.00% | – |
| Q2 2023 | $35,800 | -38.5% | 20,000 | -39.6% | 0.00% | – |
| Q1 2023 | $58,256 | -81.2% | 33,100 | -80.4% | 0.00% | -100.0% |
| Q4 2022 | $309,636 | -55.6% | 169,200 | -33.3% | 0.00% | 0.0% |
| Q3 2022 | $698,000 | -3.7% | 253,700 | -18.9% | 0.00% | 0.0% |
| Q2 2022 | $725,000 | -54.3% | 312,700 | -7.8% | 0.00% | -50.0% |
| Q1 2022 | $1,587,000 | -60.4% | 339,100 | -33.4% | 0.00% | -33.3% |
| Q4 2021 | $4,008,000 | +184.9% | 509,300 | +201.9% | 0.00% | +50.0% |
| Q3 2021 | $1,407,000 | -63.6% | 168,700 | -46.4% | 0.00% | -60.0% |
| Q2 2021 | $3,861,000 | – | 314,900 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% |
| GROUP ONE TRADING, L.P. | 33,100 | $58,256 | 0.00% |
| SIMPLEX TRADING, LLC | 4,200 | $7 | 0.00% |