QUANTUM SI INC's ticker is and the CUSIP is 74765K955. A total of 3 filers reported holding QUANTUM SI INC in Q2 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $8,300 | +1079.0% | 5,000 | +1150.0% | 0.00% | – |
| Q1 2023 | $704 | -84.0% | 400 | -83.3% | 0.00% | – |
| Q4 2022 | $4,392 | -99.1% | 2,400 | -98.7% | 0.00% | -100.0% |
| Q3 2022 | $503,000 | +8283.3% | 182,900 | +7216.0% | 0.00% | – |
| Q2 2022 | $6,000 | -75.0% | 2,500 | -51.0% | 0.00% | – |
| Q1 2022 | $24,000 | -82.1% | 5,100 | -70.0% | 0.00% | – |
| Q4 2021 | $134,000 | -16.2% | 17,000 | -11.5% | 0.00% | – |
| Q3 2021 | $160,000 | -16.7% | 19,200 | +22.3% | 0.00% | – |
| Q2 2021 | $192,000 | – | 15,700 | – | 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% |