SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 96 filers reported holding SPERO THERAPEUTICS INC in Q1 2021. The put-call ratio across all filers is 1.92 and the average weighting 0.2%.
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 ↓ |
|---|---|---|---|
| Atlas Venture Associates IX, LLC | 1,376,968 | $13,247,000 | 23.08% |
| Aquilo Capital Management, LLC | 1,154,356 | $11,099,000 | 4.17% |
| VHCP Management II, LLC | 474,015 | $4,558,000 | 1.20% |
| AWM Investment Company, Inc. | 474,344 | $4,561,000 | 0.89% |
| Alphabet Inc. | 1,112,473 | $10,696,000 | 0.65% |
| BVF INC/IL | 845,405 | $8,129,000 | 0.62% |
| Novo Holdings A/S | 931,099 | $8,948,000 | 0.58% |
| Artal Group S.A. | 500,000 | $4,808,000 | 0.19% |
| Rock Springs Capital Management LP | 525,000 | $5,048,000 | 0.16% |
| Granahan Investment Management | 148,867 | $1,431,000 | 0.07% |