BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 178 filers reported holding BLUEBIRD BIO INC in Q1 2022. The put-call ratio across all filers is 1.32 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $151,042 | -79.8% | 49,685 | -78.8% | 0.01% | -80.6% |
| Q1 2023 | $746,712 | +183.9% | 234,815 | +333.7% | 0.03% | +210.0% |
| Q1 2022 | $263,000 | -16.8% | 54,145 | +227.2% | 0.01% | -44.4% |
| Q3 2021 | $316,000 | +20.6% | 16,547 | +102.0% | 0.02% | +5.9% |
| Q2 2021 | $262,000 | -79.1% | 8,190 | -71.7% | 0.02% | -68.5% |
| Q4 2020 | $1,251,000 | +85.1% | 28,909 | +130.7% | 0.05% | +68.8% |
| Q3 2020 | $676,000 | -18.6% | 12,530 | -7.8% | 0.03% | -23.8% |
| Q2 2020 | $830,000 | +155.4% | 13,590 | +267.3% | 0.04% | +200.0% |
| Q4 2019 | $325,000 | -23.3% | 3,700 | +11.1% | 0.01% | -39.1% |
| Q2 2019 | $424,000 | – | 3,331 | – | 0.02% | – |
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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% |