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 2018 | $1,438,000 | -11.5% | 9,161 | -3.7% | 0.04% | -23.2% |
| Q1 2018 | $1,624,000 | -5.9% | 9,509 | -1.8% | 0.06% | -5.1% |
| Q4 2017 | $1,725,000 | -6.7% | 9,686 | -28.1% | 0.06% | -6.3% |
| Q3 2017 | $1,849,000 | +81.5% | 13,468 | +38.9% | 0.06% | +65.8% |
| Q2 2017 | $1,019,000 | +15.7% | 9,699 | +0.0% | 0.04% | +18.8% |
| Q1 2017 | $881,000 | -6.3% | 9,695 | -36.4% | 0.03% | 0.0% |
| Q4 2016 | $940,000 | -66.8% | 15,240 | -63.5% | 0.03% | -36.0% |
| Q3 2016 | $2,830,000 | – | 41,755 | – | 0.05% | – |
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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% |