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 | ||||
|---|---|---|---|---|---|---|
| Q3 2020 | $280,000 | -7.9% | 5,188 | +4.3% | 0.00% | 0.0% |
| Q2 2020 | $304,000 | +16.5% | 4,975 | +67.0% | 0.00% | 0.0% |
| Q4 2019 | $261,000 | -5.1% | 2,979 | -0.6% | 0.00% | 0.0% |
| Q3 2019 | $275,000 | -44.6% | 2,998 | -23.1% | 0.00% | -55.6% |
| Q2 2019 | $496,000 | -18.2% | 3,900 | +1.2% | 0.01% | -25.0% |
| Q1 2019 | $606,000 | +61.6% | 3,854 | +1.5% | 0.01% | +33.3% |
| Q4 2018 | $375,000 | -24.4% | 3,797 | +11.7% | 0.01% | -10.0% |
| Q3 2018 | $496,000 | +33.0% | 3,398 | +41.7% | 0.01% | +66.7% |
| Q2 2018 | $373,000 | -5.1% | 2,398 | +4.1% | 0.01% | -60.0% |
| Q1 2018 | $393,000 | -5.3% | 2,303 | -5.5% | 0.02% | -16.7% |
| Q4 2017 | $415,000 | +15.9% | 2,437 | -10.5% | 0.02% | +100.0% |
| Q3 2017 | $358,000 | +50.4% | 2,723 | +7.6% | 0.01% | +50.0% |
| Q2 2017 | $238,000 | -59.8% | 2,531 | -63.9% | 0.01% | -64.7% |
| Q1 2017 | $592,000 | +158.5% | 7,013 | +99.3% | 0.02% | +112.5% |
| Q4 2016 | $229,000 | -13.6% | 3,518 | -7.8% | 0.01% | -27.3% |
| Q3 2016 | $265,000 | -42.3% | 3,816 | +40.1% | 0.01% | -50.0% |
| Q2 2015 | $459,000 | +111.5% | 2,724 | +51.8% | 0.02% | +69.2% |
| Q1 2015 | $217,000 | – | 1,795 | – | 0.01% | – |
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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% |