BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 166 filers reported holding BLUEBIRD BIO INC in Q3 2023. The put-call ratio across all filers is 0.94 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2019 | $743,000 | -19.2% | 5,840 | 0.0% | 1.10% | -11.7% |
| Q1 2019 | $919,000 | +239.1% | 5,840 | +113.6% | 1.24% | +108.9% |
| Q4 2018 | $271,000 | -4.6% | 2,734 | +40.6% | 0.60% | -12.1% |
| Q3 2018 | $284,000 | +10.9% | 1,945 | +19.3% | 0.68% | +22.2% |
| Q2 2018 | $256,000 | +13.3% | 1,631 | +23.0% | 0.56% | +25.3% |
| Q1 2018 | $226,000 | -68.8% | 1,326 | -77.9% | 0.44% | -27.1% |
| Q1 2015 | $725,000 | – | 6,000 | – | 0.61% | – |
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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% |