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 | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $1,568,000 | +427.9% | 52,021 | +722.7% | 0.04% | +178.6% |
| Q1 2020 | $297,000 | -78.6% | 6,323 | -60.0% | 0.01% | +600.0% |
| Q4 2019 | $1,387,000 | -4.4% | 15,808 | 0.0% | 0.00% | -97.2% |
| Q3 2019 | $1,451,000 | -27.8% | 15,808 | 0.0% | 0.07% | -1.4% |
| Q2 2019 | $2,011,000 | -36.1% | 15,808 | -21.0% | 0.07% | -54.7% |
| Q1 2019 | $3,147,000 | +581.2% | 20,005 | +532.1% | 0.16% | +455.2% |
| Q3 2018 | $462,000 | -95.3% | 3,165 | -95.0% | 0.03% | -94.4% |
| Q2 2018 | $9,934,000 | +164.7% | 63,292 | +77.2% | 0.52% | +119.1% |
| Q2 2017 | $3,753,000 | – | 35,726 | – | 0.24% | – |
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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% |