SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 53 filers reported holding SPERO THERAPEUTICS INC in Q3 2023. The put-call ratio across all filers is - and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $8,800 | +31.9% | 478 | 0.0% | 0.00% | – |
| Q2 2021 | $6,673 | -5.2% | 478 | 0.0% | 0.00% | – |
| Q1 2021 | $7,036 | -24.1% | 478 | 0.0% | 0.00% | -100.0% |
| Q4 2020 | $9,268 | +73.8% | 478 | 0.0% | 0.00% | – |
| Q3 2020 | $5,334 | -42.7% | 478 | -30.5% | 0.00% | -100.0% |
| Q2 2020 | $9,309 | +67.5% | 688 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $5,559 | -3.3% | 688 | +15.1% | 0.00% | 0.0% |
| Q4 2019 | $5,750 | -9.3% | 598 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $6,339 | -7.9% | 598 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $6,883 | +20.8% | 598 | +34.4% | 0.00% | 0.0% |
| Q1 2019 | $5,700 | +108.3% | 445 | 0.0% | 0.00% | – |
| Q4 2018 | $2,737 | -41.5% | 445 | 0.0% | 0.00% | -100.0% |
| Q3 2018 | $4,677 | – | 445 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Aquilo Capital Management, LLC | 3,829,209 | $53,456,000 | 13.89% |
| Atlas Venture Associates IX, LLC | 1,376,968 | $19,223,000 | 3.38% |
| BVF INC/IL | 2,137,978 | $29,846,000 | 1.12% |
| AWM Investment Company, Inc. | 372,755 | $5,204,000 | 0.51% |
| Novo Holdings A/S | 468,902 | $6,546,000 | 0.29% |
| Rock Springs Capital Management LP | 965,928 | $13,484,000 | 0.27% |
| Alphabet Inc. | 889,979 | $12,424,000 | 0.25% |
| Artal Group S.A. | 500,000 | $6,980,000 | 0.14% |
| Granahan Investment Management | 332,639 | $4,644,000 | 0.09% |
| Radnor Capital Management, LLC | 10,000 | $140,000 | 0.05% |