SPERO THERAPEUTICS INC's ticker is and the CUSIP is 84833T903. A total of 3 filers reported holding SPERO THERAPEUTICS INC in Q3 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $0 | -100.0% | 500 | -28.6% | 0.00% | – |
| Q2 2023 | $1 | -95.0% | 700 | -95.1% | 0.00% | – |
| Q1 2023 | $20 | -82.5% | 14,400 | -78.2% | 0.00% | – |
| Q4 2022 | $114 | -99.9% | 66,000 | +28.9% | 0.00% | – |
| Q3 2022 | $102,000 | +10100.0% | 51,200 | +2227.3% | 0.00% | – |
| Q2 2022 | $1,000 | -96.6% | 2,200 | -35.3% | 0.00% | – |
| Q1 2022 | $29,000 | -93.8% | 3,400 | -88.4% | 0.00% | – |
| Q4 2021 | $467,000 | +418.9% | 29,200 | +430.9% | 0.00% | – |
| Q3 2021 | $90,000 | +45.2% | 5,500 | +22.2% | 0.00% | – |
| Q2 2021 | $62,000 | -22.5% | 4,500 | +8081.8% | 0.00% | – |
| Q1 2021 | $80,000 | -23.1% | 55 | +1.9% | 0.00% | – |
| Q4 2020 | $104,000 | +1385.7% | 54 | +671.4% | 0.00% | – |
| Q3 2020 | $7,000 | +600.0% | 7 | +600.0% | 0.00% | – |
| Q1 2019 | $1,000 | – | 1 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 30,100 | $554,000 | 0.00% |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% |
| SIMPLEX TRADING, LLC | 5,500 | $90,000 | 0.00% |