SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 86 filers reported holding SPERO THERAPEUTICS INC in Q4 2021. The put-call ratio across all filers is 0.92 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $121,000 | -51.4% | 13,885 | -10.7% | 0.00% | – |
| Q4 2021 | $249,000 | -8.5% | 15,543 | +5.3% | 0.00% | – |
| Q3 2021 | $272,000 | +27.7% | 14,763 | -3.0% | 0.00% | – |
| Q2 2021 | $213,000 | +3.9% | 15,215 | +9.0% | 0.00% | – |
| Q1 2021 | $205,000 | -30.3% | 13,953 | -8.2% | 0.00% | – |
| Q4 2020 | $294,000 | +219.6% | 15,192 | +83.6% | 0.00% | – |
| Q3 2020 | $92,000 | -9.8% | 8,276 | +10.0% | 0.00% | – |
| Q2 2020 | $102,000 | +264.3% | 7,524 | +116.9% | 0.00% | – |
| Q1 2020 | $28,000 | -63.2% | 3,469 | -56.3% | 0.00% | – |
| Q4 2019 | $76,000 | +153.3% | 7,930 | +174.9% | 0.00% | – |
| Q3 2019 | $30,000 | -65.9% | 2,885 | -62.7% | 0.00% | – |
| Q2 2019 | $88,000 | -30.7% | 7,737 | -22.3% | 0.00% | – |
| Q1 2019 | $127,000 | +89.6% | 9,954 | -9.8% | 0.00% | – |
| Q4 2018 | $67,000 | -82.5% | 11,031 | -69.7% | 0.00% | – |
| Q3 2018 | $382,000 | +13.0% | 36,408 | +57.4% | 0.00% | – |
| Q2 2018 | $338,000 | +207.3% | 23,124 | +195.4% | 0.00% | – |
| Q1 2018 | $110,000 | -29.0% | 7,827 | -41.1% | 0.00% | – |
| Q4 2017 | $155,000 | – | 13,293 | – | 0.00% | – |
Download | ||||||
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% |