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 2023 | $18,271 | -16.6% | 15,100 | 0.0% | 0.00% | -20.0% |
| Q2 2023 | $21,895 | -41.0% | 15,100 | -41.0% | 0.01% | -44.4% |
| Q1 2023 | $37,120 | +63.8% | 25,600 | +95.4% | 0.01% | +50.0% |
| Q4 2022 | $22,663 | -44.7% | 13,100 | -36.4% | 0.01% | -45.5% |
| Q3 2022 | $41,000 | +215.4% | 20,600 | +17.0% | 0.01% | +266.7% |
| Q2 2022 | $13,000 | -97.6% | 17,600 | -72.1% | 0.00% | -97.6% |
| Q1 2022 | $549,000 | -33.0% | 63,096 | +23.1% | 0.12% | -26.6% |
| Q4 2021 | $820,000 | +6.6% | 51,246 | +22.8% | 0.17% | +3.0% |
| Q3 2021 | $769,000 | +158.9% | 41,746 | +172.1% | 0.16% | +124.7% |
| Q4 2020 | $297,000 | – | 15,341 | – | 0.07% | – |
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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% |