BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 294 filers reported holding BLUEBIRD BIO INC in Q3 2018. The put-call ratio across all filers is 0.85 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $532 | -7.6% | 175 | 0.0% | 0.00% | – |
| Q2 2023 | $576 | -54.0% | 175 | -55.6% | 0.00% | – |
| Q1 2023 | $1,253 | +1.1% | 394 | +120.1% | 0.00% | – |
| Q4 2022 | $1,239 | -82.3% | 179 | -84.8% | 0.00% | – |
| Q3 2022 | $7,000 | +600.0% | 1,175 | +502.6% | 0.00% | – |
| Q2 2022 | $1,000 | 0.0% | 195 | +11.4% | 0.00% | – |
| Q1 2022 | $1,000 | -50.0% | 175 | -18.6% | 0.00% | – |
| Q4 2021 | $2,000 | -33.3% | 215 | +9.1% | 0.00% | – |
| Q3 2021 | $3,000 | -57.1% | 197 | -3.9% | 0.00% | – |
| Q2 2021 | $7,000 | +40.0% | 205 | +17.1% | 0.00% | – |
| Q1 2021 | $5,000 | +400.0% | 175 | +629.2% | 0.00% | – |
| Q1 2020 | $1,000 | -66.7% | 24 | +26.3% | 0.00% | – |
| Q1 2019 | $3,000 | -70.0% | 19 | -80.6% | 0.00% | – |
| Q4 2018 | $10,000 | +25.0% | 98 | +96.0% | 0.00% | – |
| Q2 2018 | $8,000 | -11.1% | 50 | 0.0% | 0.00% | – |
| Q1 2018 | $9,000 | +800.0% | 50 | +316.7% | 0.00% | – |
| Q2 2017 | $1,000 | -94.7% | 12 | -96.0% | 0.00% | – |
| Q4 2015 | $19,000 | -26.9% | 300 | 0.0% | 0.00% | -100.0% |
| Q3 2015 | $26,000 | -49.0% | 300 | 0.0% | 0.00% | 0.0% |
| Q2 2015 | $51,000 | +41.7% | 300 | 0.0% | 0.00% | 0.0% |
| Q1 2015 | $36,000 | – | 300 | – | 0.00% | – |
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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% |