SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 61 filers reported holding SPERO THERAPEUTICS INC in Q4 2022. The put-call ratio across all filers is 0.35 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $14,221 | -16.6% | 11,753 | 0.0% | 0.00% | – |
| Q2 2023 | $17,042 | 0.0% | 11,753 | 0.0% | 0.00% | – |
| Q1 2023 | $17,042 | +85110.0% | 11,753 | 0.0% | 0.00% | – |
| Q4 2022 | $20 | -99.9% | 11,753 | +17.5% | 0.00% | – |
| Q3 2022 | $20,000 | -90.6% | 10,003 | -96.5% | 0.00% | – |
| Q2 2022 | $212,000 | -94.0% | 284,956 | -30.0% | 0.00% | -100.0% |
| Q1 2022 | $3,540,000 | -40.4% | 406,946 | +9.6% | 0.00% | -50.0% |
| Q4 2021 | $5,943,000 | -2.1% | 371,222 | +12.6% | 0.00% | 0.0% |
| Q3 2021 | $6,068,000 | +16.1% | 329,633 | -12.0% | 0.00% | 0.0% |
| Q2 2021 | $5,227,000 | +3.7% | 374,443 | +9.3% | 0.00% | 0.0% |
| Q1 2021 | $5,041,000 | +3.9% | 342,506 | +36.9% | 0.00% | 0.0% |
| Q4 2020 | $4,852,000 | +88.3% | 250,197 | +8.3% | 0.00% | +100.0% |
| Q3 2020 | $2,577,000 | -11.0% | 231,009 | +7.9% | 0.00% | 0.0% |
| Q2 2020 | $2,897,000 | +80.3% | 214,155 | +7.7% | 0.00% | 0.0% |
| Q1 2020 | $1,607,000 | +7.5% | 198,861 | +27.9% | 0.00% | 0.0% |
| Q4 2019 | $1,495,000 | +14.6% | 155,480 | +26.4% | 0.00% | 0.0% |
| Q3 2019 | $1,304,000 | +6.5% | 123,005 | +15.6% | 0.00% | – |
| Q2 2019 | $1,224,000 | +434.5% | 106,403 | +495.5% | 0.00% | – |
| Q1 2019 | $229,000 | – | 17,869 | – | 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% |