SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 62 filers reported holding SPERO THERAPEUTICS INC in Q4 2019. The put-call ratio across all filers is - and the average weighting 0.5%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $1,000 | -90.9% | 495 | -96.6% | 0.00% | – |
| Q2 2022 | $11,000 | -21.4% | 14,362 | +808.4% | 0.00% | – |
| Q1 2022 | $14,000 | -97.3% | 1,581 | -95.2% | 0.00% | – |
| Q4 2021 | $527,000 | +78.0% | 32,904 | +104.6% | 0.00% | – |
| Q3 2021 | $296,000 | -46.1% | 16,085 | -59.1% | 0.00% | – |
| Q2 2021 | $549,000 | -56.6% | 39,330 | -54.2% | 0.00% | -100.0% |
| Q1 2021 | $1,265,000 | +1177.8% | 85,948 | +1584.3% | 0.00% | – |
| Q4 2020 | $99,000 | +450.0% | 5,103 | +215.0% | 0.00% | – |
| Q3 2020 | $18,000 | -55.0% | 1,620 | -45.6% | 0.00% | – |
| Q2 2020 | $40,000 | +21.2% | 2,976 | -26.4% | 0.00% | – |
| Q1 2020 | $33,000 | +43.5% | 4,042 | +68.6% | 0.00% | – |
| Q4 2019 | $23,000 | +64.3% | 2,398 | +85.9% | 0.00% | – |
| Q3 2019 | $14,000 | -54.8% | 1,290 | -50.9% | 0.00% | – |
| Q2 2019 | $31,000 | +24.0% | 2,629 | +31.2% | 0.00% | – |
| Q1 2019 | $25,000 | +78.6% | 2,004 | -11.3% | 0.00% | – |
| Q4 2018 | $14,000 | -41.7% | 2,260 | -3.1% | 0.00% | – |
| Q3 2018 | $24,000 | +26.3% | 2,333 | +77.4% | 0.00% | – |
| Q2 2018 | $19,000 | +72.7% | 1,315 | +64.0% | 0.00% | – |
| Q1 2018 | $11,000 | +37.5% | 802 | +17.8% | 0.00% | – |
| Q4 2017 | $8,000 | – | 681 | – | 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% |