SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 89 filers reported holding SPERO THERAPEUTICS INC in Q3 2021. The put-call ratio across all filers is 0.88 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $32,833 | -16.4% | 27,135 | +0.2% | 0.00% | – |
| Q2 2023 | $39,253 | -34.8% | 27,071 | -34.8% | 0.00% | – |
| Q1 2023 | $60,209 | -23.8% | 41,523 | -9.1% | 0.00% | – |
| Q4 2022 | $79,031 | +71.8% | 45,682 | +99.4% | 0.00% | – |
| Q3 2022 | $46,000 | +4500.0% | 22,908 | +2934.2% | 0.00% | – |
| Q2 2022 | $1,000 | -85.7% | 755 | 0.0% | 0.00% | – |
| Q1 2022 | $7,000 | -98.7% | 755 | -97.7% | 0.00% | – |
| Q4 2021 | $529,000 | -0.2% | 33,082 | +14.8% | 0.00% | – |
| Q3 2021 | $530,000 | +1863.0% | 28,822 | +1422.6% | 0.00% | – |
| Q2 2021 | $27,000 | -94.1% | 1,893 | -93.9% | 0.00% | – |
| Q1 2021 | $456,000 | +64.0% | 31,027 | +116.3% | 0.00% | – |
| Q4 2020 | $278,000 | +4533.3% | 14,347 | +2769.4% | 0.00% | – |
| Q3 2020 | $6,000 | -92.5% | 500 | -91.6% | 0.00% | – |
| Q2 2020 | $80,000 | +9.6% | 5,952 | -33.8% | 0.00% | – |
| Q1 2020 | $73,000 | -46.7% | 8,993 | -37.0% | 0.00% | – |
| Q4 2019 | $137,000 | +17.1% | 14,267 | +29.1% | 0.00% | – |
| Q3 2019 | $117,000 | -14.0% | 11,051 | -6.4% | 0.00% | – |
| Q2 2019 | $136,000 | +580.0% | 11,802 | +268.8% | 0.00% | – |
| Q4 2018 | $20,000 | -20.0% | 3,200 | +35.7% | 0.00% | – |
| Q3 2018 | $25,000 | +92.3% | 2,359 | +149.6% | 0.00% | – |
| Q2 2018 | $13,000 | +85.7% | 945 | +90.5% | 0.00% | – |
| Q1 2018 | $7,000 | +600.0% | 496 | +287.5% | 0.00% | – |
| Q4 2017 | $1,000 | – | 128 | – | 0.00% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Atlas Venture Associates IX, LLC | 1,376,968 | $17,639,000 | 16.57% |
| Aquilo Capital Management, LLC | 1,054,356 | $13,506,000 | 5.98% |
| VHCP Management II, LLC | 474,015 | $6,072,000 | 1.78% |
| AWM Investment Company, Inc. | 562,296 | $7,203,000 | 1.42% |
| Alphabet Inc. | 1,112,473 | $14,251,000 | 0.74% |
| BVF INC/IL | 460,706 | $5,902,000 | 0.66% |
| DAFNA Capital Management LLC | 70,000 | $897,000 | 0.39% |
| Artal Group S.A. | 600,000 | $7,686,000 | 0.31% |
| Rock Springs Capital Management LP | 525,000 | $6,725,000 | 0.26% |
| Orbimed Advisors | 507,471 | $6,501,000 | 0.10% |