SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 54 filers reported holding SPERO THERAPEUTICS INC in Q3 2018. The put-call ratio across all filers is - and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $163,108 | +2.4% | 134,800 | +22.8% | 0.00% | 0.0% |
| Q2 2023 | $159,210 | 0.0% | 109,800 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $159,210 | -71.6% | 109,800 | +58.4% | 0.00% | -69.2% |
| Q1 2020 | $560,000 | -17.5% | 69,305 | -1.8% | 0.01% | +44.4% |
| Q4 2019 | $679,000 | +17.3% | 70,579 | +29.3% | 0.01% | +12.5% |
| Q3 2019 | $579,000 | -7.8% | 54,579 | 0.0% | 0.01% | 0.0% |
| Q2 2019 | $628,000 | -10.2% | 54,579 | 0.0% | 0.01% | -11.1% |
| Q1 2019 | $699,000 | +297.2% | 54,579 | +91.0% | 0.01% | +350.0% |
| Q4 2018 | $176,000 | -78.7% | 28,579 | -63.6% | 0.00% | -75.0% |
| Q3 2018 | $826,000 | +3.0% | 78,579 | +43.7% | 0.01% | 0.0% |
| Q2 2018 | $802,000 | +3.0% | 54,700 | 0.0% | 0.01% | 0.0% |
| Q1 2018 | $779,000 | – | 54,700 | – | 0.01% | – |
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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% |