BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 219 filers reported holding BLUEBIRD BIO INC in Q1 2017. The put-call ratio across all filers is 0.60 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2020 | $2,136,000 | +21.7% | 35,000 | +75.0% | 0.71% | +8.8% |
| Q4 2019 | $1,755,000 | -44.8% | 20,000 | -20.0% | 0.65% | -15.3% |
| Q2 2019 | $3,180,000 | +14.1% | 25,000 | +41.2% | 0.77% | -25.1% |
| Q1 2019 | $2,786,000 | +154.4% | 17,705 | +136.1% | 1.03% | +162.7% |
| Q3 2018 | $1,095,000 | -72.1% | 7,500 | -70.0% | 0.39% | -74.1% |
| Q2 2018 | $3,924,000 | +129.7% | 25,000 | +150.0% | 1.51% | +89.3% |
| Q1 2018 | $1,708,000 | -52.0% | 10,000 | -50.0% | 0.80% | -39.7% |
| Q4 2017 | $3,562,000 | +48.2% | 20,000 | +14.3% | 1.32% | +61.6% |
| Q3 2017 | $2,404,000 | +52.5% | 17,500 | +16.7% | 0.82% | +41.8% |
| Q2 2017 | $1,576,000 | +24.7% | 15,000 | +7.9% | 0.58% | -2.0% |
| Q1 2017 | $1,264,000 | +36.5% | 13,900 | -7.3% | 0.59% | +33.3% |
| Q4 2016 | $926,000 | -22.7% | 15,000 | -15.1% | 0.44% | -26.8% |
| Q3 2016 | $1,198,000 | +38.3% | 17,669 | -11.7% | 0.60% | +40.5% |
| Q2 2016 | $866,000 | -18.5% | 20,000 | -20.0% | 0.43% | -8.7% |
| Q1 2016 | $1,063,000 | +107.2% | 25,000 | +316.7% | 0.47% | +89.2% |
| Q3 2015 | $513,000 | -49.2% | 6,000 | 0.0% | 0.25% | -28.9% |
| Q2 2015 | $1,010,000 | -7.1% | 6,000 | -33.3% | 0.35% | -5.4% |
| Q1 2015 | $1,087,000 | – | 9,000 | – | 0.37% | – |
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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% |