SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 80 filers reported holding SPERO THERAPEUTICS INC in Q2 2022. The put-call ratio across all filers is 0.90 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $87,000 | -45.6% | 10,000 | 0.0% | 0.02% | -45.0% |
| Q4 2021 | $160,000 | -13.0% | 10,000 | 0.0% | 0.04% | -63.3% |
| Q3 2021 | $184,000 | +31.4% | 10,000 | 0.0% | 0.11% | +131.9% |
| Q2 2021 | $140,000 | -4.8% | 10,000 | 0.0% | 0.05% | 0.0% |
| Q1 2021 | $147,000 | -24.2% | 10,000 | 0.0% | 0.05% | -14.5% |
| Q4 2020 | $194,000 | +73.2% | 10,000 | 0.0% | 0.06% | +44.7% |
| Q3 2020 | $112,000 | -15.8% | 10,000 | 0.0% | 0.04% | -20.8% |
| Q2 2020 | $133,000 | – | 10,000 | – | 0.05% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Atlas Venture Associates IX, LLC | 1,376,968 | $17,639,000 | 16.57% |
| Aquilo Capital Management, LLC | 1,054,356 | $13,506,000 | 5.98% |
| VHCP Management II, LLC | 474,015 | $6,072,000 | 1.78% |
| AWM Investment Company, Inc. | 562,296 | $7,203,000 | 1.42% |
| Alphabet Inc. | 1,112,473 | $14,251,000 | 0.74% |
| BVF INC/IL | 460,706 | $5,902,000 | 0.66% |
| DAFNA Capital Management LLC | 70,000 | $897,000 | 0.39% |
| Artal Group S.A. | 600,000 | $7,686,000 | 0.31% |
| Rock Springs Capital Management LP | 525,000 | $6,725,000 | 0.26% |
| Orbimed Advisors | 507,471 | $6,501,000 | 0.10% |