BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 296 filers reported holding BLUEBIRD BIO INC in Q1 2019. The put-call ratio across all filers is 0.60 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $330,000 | +450.0% | 52,133 | +260.3% | 0.01% | +500.0% |
| Q2 2022 | $60,000 | -6.2% | 14,470 | +9.0% | 0.00% | 0.0% |
| Q1 2022 | $64,000 | -48.4% | 13,270 | +105.0% | 0.00% | -50.0% |
| Q3 2021 | $124,000 | +37.8% | 6,474 | +130.5% | 0.00% | +33.3% |
| Q2 2021 | $90,000 | -68.5% | 2,809 | -70.4% | 0.00% | -70.0% |
| Q1 2021 | $286,000 | -24.3% | 9,482 | +8.6% | 0.01% | -41.2% |
| Q4 2020 | $378,000 | -15.1% | 8,731 | +5.8% | 0.02% | -63.8% |
| Q3 2020 | $445,000 | -57.2% | 8,256 | -51.5% | 0.05% | -59.5% |
| Q2 2020 | $1,039,000 | +11444.4% | 17,029 | +8723.3% | 0.12% | +2800.0% |
| Q1 2020 | $9,000 | -76.9% | 193 | -22.2% | 0.00% | -73.3% |
| Q1 2019 | $39,000 | +3800.0% | 248 | +1553.3% | 0.02% | – |
| Q4 2018 | $1,000 | -98.8% | 15 | -97.2% | 0.00% | -100.0% |
| Q2 2018 | $84,000 | +127.0% | 537 | +146.3% | 0.03% | +47.4% |
| Q1 2018 | $37,000 | +3600.0% | 218 | +2625.0% | 0.02% | +1800.0% |
| Q4 2017 | $1,000 | -75.0% | 8 | -92.0% | 0.00% | -87.5% |
| Q1 2016 | $4,000 | -33.3% | 100 | 0.0% | 0.01% | -60.0% |
| Q4 2015 | $6,000 | – | 100 | – | 0.02% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 4,282,827 | $13,019,794 | 1.84% |
| Birchview Capital, LP | 455,200 | $1,383,808 | 1.18% |
| PFM Health Sciences, LP | 6,040,934 | $18,364,439 | 0.86% |
| Lion Point Capital, LP | 531,256 | $1,615,018 | 0.72% |
| Endurant Capital Management LP | 251,785 | $765,426 | 0.69% |
| Bleichroeder LP | 900,000 | $2,736,000 | 0.67% |
| Connacht Asset Management LP | 31,634 | $96,167 | 0.57% |
| Granahan Investment Management | 5,137,778 | $15,618,845 | 0.56% |
| Frazier Life Sciences Management, L.P. | 1,709,907 | $5,198,117 | 0.34% |
| Contrarius Investment Management Ltd | 1,308,002 | $3,976 | 0.22% |