BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 197 filers reported holding BLUEBIRD BIO INC in Q3 2021. The put-call ratio across all filers is 1.22 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $26,430 | +20.9% | 8,694 | +30.9% | 0.00% | 0.0% |
| Q2 2023 | $21,859 | +3.5% | 6,644 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $21,128 | -48.6% | 6,644 | 0.0% | 0.00% | -50.0% |
| Q4 2022 | $41,126 | +24.6% | 6,644 | +25.5% | 0.00% | +100.0% |
| Q3 2022 | $33,000 | +57.1% | 5,296 | 0.0% | 0.00% | 0.0% |
| Q2 2022 | $21,000 | -19.2% | 5,296 | 0.0% | 0.00% | 0.0% |
| Q1 2022 | $26,000 | -50.9% | 5,296 | 0.0% | 0.00% | -50.0% |
| Q4 2021 | $53,000 | -47.5% | 5,296 | 0.0% | 0.00% | -50.0% |
| Q3 2021 | $101,000 | -40.2% | 5,296 | 0.0% | 0.00% | -33.3% |
| Q2 2021 | $169,000 | -76.1% | 5,296 | +27.7% | 0.01% | -82.4% |
| Q1 2018 | $708,000 | -4.2% | 4,148 | 0.0% | 0.03% | 0.0% |
| Q4 2017 | $739,000 | +54.0% | 4,148 | +7.7% | 0.03% | +47.8% |
| Q3 2017 | $480,000 | +27.0% | 3,850 | +6.9% | 0.02% | +27.8% |
| Q2 2017 | $378,000 | +21.9% | 3,600 | +5.6% | 0.02% | +20.0% |
| Q1 2017 | $310,000 | +47.6% | 3,409 | 0.0% | 0.02% | +36.4% |
| Q4 2016 | $210,000 | -3.2% | 3,409 | +6.6% | 0.01% | -8.3% |
| Q3 2016 | $217,000 | -17.5% | 3,199 | +47.0% | 0.01% | -29.4% |
| Q1 2015 | $263,000 | – | 2,176 | – | 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% |