BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 272 filers reported holding BLUEBIRD BIO INC in Q4 2020. The put-call ratio across all filers is 1.17 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $480,000 | +686.9% | 75,631 | +414.5% | 0.00% | +300.0% |
| Q2 2022 | $61,000 | -93.9% | 14,700 | -92.8% | 0.00% | -88.9% |
| Q1 2022 | $993,000 | +794.6% | 204,700 | +1744.1% | 0.01% | +800.0% |
| Q4 2021 | $111,000 | -83.9% | 11,100 | -48.6% | 0.00% | -85.7% |
| Q2 2021 | $691,000 | +222.9% | 21,605 | +204.3% | 0.01% | +133.3% |
| Q1 2021 | $214,000 | -40.1% | 7,101 | +7.3% | 0.00% | -57.1% |
| Q3 2020 | $357,000 | +10.2% | 6,616 | -6.2% | 0.01% | -65.0% |
| Q1 2020 | $324,000 | -75.6% | 7,057 | -53.3% | 0.02% | -37.5% |
| Q4 2019 | $1,326,000 | -35.0% | 15,109 | +16.2% | 0.03% | -71.2% |
| Q2 2018 | $2,041,000 | +63.7% | 13,000 | -54.9% | 0.11% | -60.2% |
| Q2 2016 | $1,247,000 | +237.0% | 28,812 | +231.4% | 0.28% | +84.8% |
| Q1 2016 | $370,000 | – | 8,695 | – | 0.15% | – |
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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% |