SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 70 filers reported holding SPERO THERAPEUTICS INC in Q3 2022. The put-call ratio across all filers is 11.73 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $41,370 | -69.0% | 34,190 | -62.8% | 0.00% | – |
| Q2 2023 | $133,357 | +5.6% | 91,970 | +5.6% | 0.00% | – |
| Q1 2023 | $126,301 | +1171.7% | 87,104 | +1417.2% | 0.00% | – |
| Q4 2022 | $9,932 | -91.0% | 5,741 | -89.6% | 0.00% | – |
| Q3 2022 | $110,000 | +511.1% | 55,100 | +127.3% | 0.00% | – |
| Q2 2022 | $18,000 | -64.7% | 24,244 | +433.1% | 0.00% | – |
| Q3 2020 | $51,000 | +24.4% | 4,548 | +49.2% | 0.00% | – |
| Q2 2020 | $41,000 | +4000.0% | 3,048 | +2948.0% | 0.00% | – |
| Q3 2019 | $1,000 | 0.0% | 100 | 0.0% | 0.00% | – |
| Q2 2019 | $1,000 | 0.0% | 100 | 0.0% | 0.00% | – |
| Q1 2019 | $1,000 | 0.0% | 100 | 0.0% | 0.00% | – |
| Q4 2018 | $1,000 | – | 100 | – | 0.00% | – |
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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% |