SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 43 filers reported holding SPERO THERAPEUTICS INC in Q2 2018. The put-call ratio across all filers is - and the average weighting 0.4%.
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 ↓ |
|---|---|---|---|
| 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% |