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 | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $623,000 | -37.6% | 62,344 | +19.3% | 0.07% | -13.0% |
| Q3 2021 | $999,000 | -67.0% | 52,274 | -44.7% | 0.08% | -71.3% |
| Q2 2021 | $3,023,000 | +65.6% | 94,527 | +56.1% | 0.27% | +69.6% |
| Q1 2021 | $1,825,000 | -55.6% | 60,539 | -36.2% | 0.16% | -48.4% |
| Q4 2020 | $4,108,000 | +33.6% | 94,942 | +66.5% | 0.31% | +56.1% |
| Q3 2020 | $3,076,000 | – | 57,010 | – | 0.20% | – |
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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% |