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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $623 | -18.8% | 515 | -2.6% | 0.00% | – |
| Q2 2023 | $767 | +3.5% | 529 | +3.5% | 0.00% | – |
| Q1 2023 | $741 | +5.0% | 511 | +25.2% | 0.00% | – |
| Q4 2022 | $706 | – | 408 | +1.2% | 0.00% | – |
| Q3 2022 | $0 | -100.0% | 403 | -54.8% | 0.00% | – |
| Q2 2022 | $1,000 | -99.2% | 891 | -93.8% | 0.00% | – |
| Q1 2022 | $124,000 | -65.8% | 14,283 | -37.1% | 0.00% | – |
| Q4 2021 | $363,000 | +152.1% | 22,694 | +192.2% | 0.00% | – |
| Q3 2021 | $144,000 | -74.1% | 7,766 | -80.5% | 0.00% | – |
| Q2 2021 | $556,000 | +109.8% | 39,847 | +122.4% | 0.00% | – |
| Q1 2021 | $265,000 | -67.3% | 17,920 | -57.1% | 0.00% | – |
| Q4 2020 | $811,000 | +117.4% | 41,799 | +25.2% | 0.00% | – |
| Q3 2020 | $373,000 | -25.8% | 33,375 | -10.2% | 0.00% | – |
| Q2 2020 | $503,000 | +131.8% | 37,186 | +38.8% | 0.00% | – |
| Q1 2020 | $217,000 | +14.8% | 26,796 | +36.5% | 0.00% | – |
| Q4 2019 | $189,000 | +3.3% | 19,625 | +13.6% | 0.00% | – |
| Q3 2019 | $183,000 | +16.6% | 17,274 | +26.5% | 0.00% | – |
| Q2 2019 | $157,000 | +157.4% | 13,660 | +187.9% | 0.00% | – |
| Q1 2019 | $61,000 | -30.7% | 4,745 | -66.7% | 0.00% | – |
| Q4 2018 | $88,000 | +252.0% | 14,240 | +510.1% | 0.00% | – |
| Q3 2018 | $25,000 | +108.3% | 2,334 | +185.7% | 0.00% | – |
| Q2 2018 | $12,000 | -20.0% | 817 | -22.4% | 0.00% | – |
| Q1 2018 | $15,000 | +36.4% | 1,053 | +6.4% | 0.00% | – |
| Q4 2017 | $11,000 | – | 990 | – | 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% |