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 | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $1,770,000 | +2.7% | 55,341 | -3.2% | 0.11% | -5.3% |
| Q1 2021 | $1,724,000 | +6.9% | 57,176 | +53.4% | 0.11% | 0.0% |
| Q4 2020 | $1,613,000 | -28.8% | 37,270 | -11.2% | 0.11% | -36.5% |
| Q3 2020 | $2,265,000 | +9.8% | 41,985 | +24.2% | 0.18% | -2.7% |
| Q2 2020 | $2,063,000 | +92.4% | 33,795 | +44.9% | 0.18% | +335.7% |
| Q1 2020 | $1,072,000 | -38.7% | 23,322 | +17.0% | 0.04% | -73.1% |
| Q4 2019 | $1,749,000 | +41.4% | 19,932 | +48.0% | 0.16% | +27.9% |
| Q3 2019 | $1,237,000 | -19.5% | 13,470 | +11.5% | 0.12% | -21.8% |
| Q2 2019 | $1,537,000 | -12.5% | 12,085 | +8.2% | 0.16% | -18.3% |
| Q1 2019 | $1,757,000 | +60.9% | 11,170 | +1.5% | 0.19% | +31.7% |
| Q4 2018 | $1,092,000 | -19.8% | 11,005 | +18.1% | 0.14% | +4.3% |
| Q3 2018 | $1,361,000 | +8.3% | 9,322 | +16.4% | 0.14% | +3.0% |
| Q2 2018 | $1,257,000 | +9.6% | 8,010 | +19.2% | 0.14% | +7.1% |
| Q1 2018 | $1,147,000 | +5.7% | 6,720 | +10.3% | 0.13% | +5.0% |
| Q4 2017 | $1,085,000 | +9.4% | 6,090 | -35.5% | 0.12% | -6.2% |
| Q3 2017 | $992,000 | 0.0% | 9,440 | 0.0% | 0.13% | +0.8% |
| Q2 2017 | $992,000 | +40.3% | 9,440 | +21.4% | 0.13% | +22.1% |
| Q1 2017 | $707,000 | – | 7,775 | – | 0.10% | – |
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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% |