BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 283 filers reported holding BLUEBIRD BIO INC in Q2 2019. The put-call ratio across all filers is 1.28 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2020 | $16,732,000 | +5403.9% | 274,120 | +14103.1% | 0.25% | +6250.0% |
| Q1 2019 | $304,000 | -92.3% | 1,930 | -95.2% | 0.00% | -93.1% |
| Q4 2018 | $3,964,000 | -61.6% | 39,959 | -39.2% | 0.06% | -37.0% |
| Q2 2018 | $10,310,000 | +221.4% | 65,688 | +264.7% | 0.09% | +253.8% |
| Q4 2017 | $3,208,000 | -87.4% | 18,010 | -93.5% | 0.03% | -87.4% |
| Q1 2017 | $25,362,000 | +38.8% | 279,008 | -5.8% | 0.21% | +36.4% |
| Q4 2016 | $18,270,000 | +374.5% | 296,107 | +558.0% | 0.15% | +235.6% |
| Q3 2015 | $3,850,000 | +22.4% | 45,000 | -48.7% | 0.04% | -30.8% |
| Q3 2014 | $3,145,000 | +547.1% | 87,651 | +278.6% | 0.06% | +242.1% |
| Q4 2013 | $486,000 | -54.9% | 23,152 | -42.1% | 0.02% | -56.8% |
| Q3 2013 | $1,078,000 | +43.9% | 40,000 | +33.3% | 0.04% | +18.9% |
| Q2 2013 | $749,000 | – | 30,000 | – | 0.04% | – |
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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% |