BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 306 filers reported holding BLUEBIRD BIO INC in Q1 2018. The put-call ratio across all filers is 0.94 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $319,617 | +5.1% | 97,148 | +1.6% | 0.00% | 0.0% |
| Q1 2023 | $304,161 | -65.2% | 95,648 | -24.2% | 0.00% | -75.0% |
| Q4 2022 | $873,429 | -68.2% | 126,218 | +147.6% | 0.00% | -69.2% |
| Q3 2020 | $2,750,000 | -24.3% | 50,974 | -14.3% | 0.01% | -23.5% |
| Q2 2020 | $3,633,000 | -35.1% | 59,511 | +67.2% | 0.02% | -45.2% |
| Q1 2019 | $5,599,000 | +379.4% | 35,585 | +202.2% | 0.03% | +342.9% |
| Q4 2018 | $1,168,000 | -73.4% | 11,775 | -60.9% | 0.01% | -69.6% |
| Q3 2018 | $4,394,000 | -79.3% | 30,097 | -77.7% | 0.02% | -80.3% |
| Q2 2018 | $21,202,000 | +600.9% | 135,086 | +662.5% | 0.12% | +588.2% |
| Q1 2018 | $3,025,000 | +64.0% | 17,716 | +71.1% | 0.02% | +70.0% |
| Q4 2017 | $1,845,000 | +184.7% | 10,357 | +119.5% | 0.01% | +150.0% |
| Q3 2017 | $648,000 | – | 4,718 | – | 0.00% | – |
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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% |