BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 238 filers reported holding BLUEBIRD BIO INC in Q1 2021. The put-call ratio across all filers is 1.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2022 | $374,000 | -6.7% | 90,105 | +124.4% | 0.41% | +2.0% |
| Q4 2021 | $401,000 | -43.2% | 40,145 | +8.7% | 0.40% | -24.4% |
| Q3 2021 | $706,000 | -49.1% | 36,919 | -15.0% | 0.53% | -48.4% |
| Q2 2021 | $1,387,000 | +28.4% | 43,412 | +15.1% | 1.02% | +97.3% |
| Q1 2021 | $1,080,000 | +64.9% | 37,712 | +504.8% | 0.52% | -15.6% |
| Q2 2017 | $655,000 | +87.7% | 6,235 | +52.7% | 0.62% | -72.0% |
| Q3 2015 | $349,000 | – | 4,084 | – | 2.20% | – |
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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% |