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 | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $89,000 | -56.4% | 10,256 | -19.5% | 0.00% | – |
| Q4 2021 | $204,000 | -15.0% | 12,738 | -2.3% | 0.00% | – |
| Q3 2021 | $240,000 | -48.6% | 13,044 | -61.0% | 0.00% | -100.0% |
| Q2 2021 | $467,000 | +2.6% | 33,446 | +8.2% | 0.00% | 0.0% |
| Q1 2021 | $455,000 | -24.2% | 30,923 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $600,000 | +142.9% | 30,923 | +39.5% | 0.00% | – |
| Q3 2020 | $247,000 | -12.7% | 22,163 | +6.1% | 0.00% | – |
| Q2 2020 | $283,000 | +76.9% | 20,880 | +5.4% | 0.00% | – |
| Q1 2020 | $160,000 | -1.8% | 19,809 | +16.5% | 0.00% | – |
| Q4 2019 | $163,000 | -9.4% | 16,997 | 0.0% | 0.00% | – |
| Q3 2019 | $180,000 | -1.1% | 16,997 | +7.7% | 0.00% | – |
| Q2 2019 | $182,000 | +11.7% | 15,775 | +23.9% | 0.00% | – |
| Q1 2019 | $163,000 | +109.0% | 12,736 | 0.0% | 0.00% | – |
| Q4 2018 | $78,000 | -41.8% | 12,736 | 0.0% | 0.00% | – |
| Q3 2018 | $134,000 | -10.7% | 12,736 | +24.8% | 0.00% | – |
| Q2 2018 | $150,000 | +10.3% | 10,206 | +7.3% | 0.00% | – |
| Q1 2018 | $136,000 | +21.4% | 9,511 | 0.0% | 0.00% | – |
| Q4 2017 | $112,000 | – | 9,511 | – | 0.00% | – |
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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% |