SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 92 filers reported holding SPERO THERAPEUTICS INC in Q4 2020. The put-call ratio across all filers is 1.32 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $15 | -98.7% | 12 | -98.2% | 0.00% | – |
| Q4 2022 | $1,156 | -99.9% | 668 | +28.0% | 0.00% | – |
| Q3 2022 | $1,044,000 | -94.8% | 522 | -98.1% | 0.00% | – |
| Q2 2022 | $20,137,000 | -7.7% | 27,176 | +983.6% | 0.00% | – |
| Q1 2022 | $21,820,000 | -84.9% | 2,508 | -72.1% | 0.00% | – |
| Q4 2021 | $144,042,000 | +80.2% | 8,997 | +107.2% | 0.00% | – |
| Q3 2021 | $79,955,000 | +504.8% | 4,343 | +358.6% | 0.00% | – |
| Q2 2021 | $13,220,000 | -93.7% | 947 | -93.4% | 0.00% | – |
| Q1 2021 | $210,923,000 | +186.7% | 14,329 | +277.7% | 0.00% | – |
| Q4 2020 | $73,566,000 | +98.5% | 3,794 | +14.2% | 0.00% | – |
| Q3 2020 | $37,062,000 | +508.8% | 3,321 | +638.0% | 0.00% | – |
| Q2 2020 | $6,088,000 | -80.3% | 450 | -88.3% | 0.00% | – |
| Q1 2020 | $30,979,000 | +15.4% | 3,834 | +37.3% | 0.00% | – |
| Q4 2019 | $26,845,000 | +76.0% | 2,792 | +94.0% | 0.00% | – |
| Q3 2019 | $15,253,000 | -7.4% | 1,439 | +0.6% | 0.00% | – |
| Q2 2019 | $16,471,000 | -24.7% | 1,431 | -16.2% | 0.00% | – |
| Q1 2019 | $21,867,000 | +871.4% | 1,707 | +366.4% | 0.00% | – |
| Q4 2018 | $2,251,000 | -3.1% | 366 | +65.6% | 0.00% | – |
| Q3 2018 | $2,323,000 | -32.3% | 221 | -5.6% | 0.00% | – |
| Q2 2018 | $3,433,000 | -77.3% | 234 | -77.9% | 0.00% | – |
| Q1 2018 | $15,119,000 | +3.5% | 1,061 | -14.6% | 0.00% | – |
| Q4 2017 | $14,605,000 | – | 1,243 | – | 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% |