BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 236 filers reported holding BLUEBIRD BIO INC in Q2 2021. The put-call ratio across all filers is 1.04 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $5,000 | -50.0% | 500 | -1.8% | 0.00% | – |
| Q3 2021 | $10,000 | -37.5% | 509 | 0.0% | 0.00% | – |
| Q2 2021 | $16,000 | -5.9% | 509 | -8.0% | 0.00% | – |
| Q1 2021 | $17,000 | -99.8% | 553 | -99.3% | 0.00% | -100.0% |
| Q4 2019 | $6,834,000 | -68.5% | 77,885 | -67.0% | 0.01% | -72.3% |
| Q3 2019 | $21,696,000 | -33.2% | 236,291 | -7.5% | 0.05% | -33.8% |
| Q2 2019 | $32,493,000 | +371.9% | 255,448 | +483.6% | 0.07% | +343.8% |
| Q1 2019 | $6,886,000 | +208.1% | 43,769 | +94.3% | 0.02% | +166.7% |
| Q4 2018 | $2,235,000 | +6.1% | 22,532 | +56.2% | 0.01% | +20.0% |
| Q3 2018 | $2,107,000 | -7.0% | 14,429 | 0.0% | 0.01% | 0.0% |
| Q2 2018 | $2,265,000 | – | 14,429 | – | 0.01% | – |
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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% |