SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 89 filers reported holding SPERO THERAPEUTICS INC in Q3 2021. The put-call ratio across all filers is 0.88 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2022 | $0 | -100.0% | 223 | -98.7% | 0.00% | – |
| Q1 2022 | $149,000 | -82.7% | 17,123 | -68.1% | 0.00% | -100.0% |
| Q4 2021 | $860,000 | -34.4% | 53,728 | -24.6% | 0.00% | 0.0% |
| Q3 2021 | $1,311,000 | +88.4% | 71,220 | +42.8% | 0.00% | 0.0% |
| Q2 2021 | $696,000 | -19.3% | 49,891 | -14.8% | 0.00% | 0.0% |
| Q1 2021 | $862,000 | -24.1% | 58,529 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $1,135,000 | +124.3% | 58,529 | +29.1% | 0.00% | 0.0% |
| Q3 2020 | $506,000 | +39.8% | 45,329 | +69.6% | 0.00% | – |
| Q2 2020 | $362,000 | +143.0% | 26,729 | +45.0% | 0.00% | – |
| Q1 2020 | $149,000 | -6.3% | 18,429 | +11.4% | 0.00% | – |
| Q4 2019 | $159,000 | -9.1% | 16,550 | 0.0% | 0.00% | – |
| Q3 2019 | $175,000 | +8.7% | 16,550 | +18.0% | 0.00% | – |
| Q2 2019 | $161,000 | -14.4% | 14,028 | -4.2% | 0.00% | – |
| Q1 2019 | $188,000 | +93.8% | 14,650 | -6.7% | 0.00% | – |
| Q4 2018 | $97,000 | -42.9% | 15,700 | -2.8% | 0.00% | – |
| Q3 2018 | $170,000 | -28.3% | 16,150 | 0.0% | 0.00% | – |
| Q2 2018 | $237,000 | – | 16,150 | – | 0.00% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Aquilo Capital Management, LLC | 3,932,209 | $76,246,000 | 15.85% |
| Atlas Venture Associates XI, LLC | 1,376,968 | $26,700,000 | 4.23% |
| Atlas Venture Associates IX, LLC | 1,376,968 | $26,700,000 | 4.23% |
| BVF INC/IL | 2,243,278 | $43,497,000 | 1.71% |
| AWM Investment Company, Inc. | 372,755 | $7,228,000 | 0.92% |
| Alphabet Inc. | 889,979 | $17,257,000 | 0.83% |
| Rock Springs Capital Management LP | 1,235,000 | $23,947,000 | 0.51% |
| Novo Holdings A/S | 576,702 | $11,182,000 | 0.48% |
| Artal Group S.A. | 500,000 | $9,695,000 | 0.21% |
| Granahan Investment Management | 420,320 | $8,150,000 | 0.18% |