SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 80 filers reported holding SPERO THERAPEUTICS INC in Q3 2020. The put-call ratio across all filers is 2.52 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $222,000 | -45.6% | 25,500 | 0.0% | 0.00% | -50.0% |
| Q4 2021 | $408,000 | -14.8% | 25,500 | -1.9% | 0.00% | 0.0% |
| Q3 2021 | $479,000 | +46.0% | 26,000 | +10.6% | 0.00% | +100.0% |
| Q2 2021 | $328,000 | +48.4% | 23,500 | +56.7% | 0.00% | 0.0% |
| Q1 2021 | $221,000 | -5.2% | 15,000 | +25.0% | 0.00% | 0.0% |
| Q4 2020 | $233,000 | +43.8% | 12,000 | -17.2% | 0.00% | 0.0% |
| Q3 2020 | $162,000 | -17.3% | 14,500 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $196,000 | +67.5% | 14,500 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $117,000 | -10.0% | 14,500 | +7.4% | 0.00% | 0.0% |
| Q4 2019 | $130,000 | – | 13,500 | – | 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% |