SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 56 filers reported holding SPERO THERAPEUTICS INC in Q1 2019. The put-call ratio across all filers is - and the average weighting 0.5%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2019 | $566,000 | -28.6% | 58,868 | -21.3% | 0.02% | -15.8% |
| Q3 2019 | $793,000 | -12.9% | 74,808 | -5.4% | 0.02% | -5.0% |
| Q2 2019 | $910,000 | +5.0% | 79,093 | +16.8% | 0.02% | +5.3% |
| Q1 2019 | $867,000 | +190.9% | 67,716 | +40.0% | 0.02% | +137.5% |
| Q4 2018 | $298,000 | +88.6% | 48,382 | +252.7% | 0.01% | +166.7% |
| Q3 2018 | $158,000 | – | 13,716 | – | 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% |