BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 240 filers reported holding BLUEBIRD BIO INC in Q2 2015. The put-call ratio across all filers is 1.07 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2018 | $1,978,000 | -38.6% | 11,587 | -35.9% | 0.33% | -43.0% |
| Q4 2017 | $3,220,000 | +28.0% | 18,079 | -1.3% | 0.58% | +72.8% |
| Q3 2017 | $2,515,000 | -10.4% | 18,311 | -55.8% | 0.33% | -11.4% |
| Q3 2016 | $2,806,000 | -18.7% | 41,405 | +102.0% | 0.38% | -6.7% |
| Q2 2015 | $3,451,000 | -34.6% | 20,498 | -53.1% | 0.40% | -33.8% |
| Q1 2015 | $5,279,000 | -6.5% | 43,709 | -29.0% | 0.61% | -22.6% |
| Q4 2014 | $5,648,000 | +435.4% | 61,579 | +109.5% | 0.79% | +268.2% |
| Q3 2014 | $1,055,000 | +21.5% | 29,396 | +30.6% | 0.21% | +29.7% |
| Q2 2014 | $868,000 | – | 22,509 | – | 0.16% | – |
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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% |