BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 238 filers reported holding BLUEBIRD BIO INC in Q1 2021. The put-call ratio across all filers is 1.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $100,000 | 0.0% | 545 | 0.0% | 0.00% | 0.0% |
| Q2 2022 | $100,000 | 0.0% | 545 | 0.0% | 0.00% | +200.0% |
| Q1 2022 | $100,000 | – | 545 | – | 0.00% | – |
| Q2 2021 | $0 | – | 0 | – | 0.00% | – |
| Q1 2021 | $0 | -100.0% | 0 | -100.0% | 0.00% | -100.0% |
| Q4 2020 | $46,000 | -19.3% | 1,012 | -1.3% | 0.00% | -33.3% |
| Q3 2020 | $57,000 | -6.6% | 1,025 | +0.9% | 0.00% | -40.0% |
| Q2 2020 | $61,000 | +35.6% | 1,016 | +2.4% | 0.01% | 0.0% |
| Q1 2020 | $45,000 | -29.7% | 992 | +37.2% | 0.01% | 0.0% |
| Q4 2019 | $64,000 | -11.1% | 723 | -4.2% | 0.01% | 0.0% |
| Q3 2019 | $72,000 | +3500.0% | 755 | +9337.5% | 0.01% | – |
| Q1 2019 | $2,000 | -98.4% | 8 | -99.4% | 0.00% | -100.0% |
| Q4 2018 | $125,000 | -53.7% | 1,285 | -30.5% | 0.01% | -27.3% |
| Q3 2018 | $270,000 | -19.6% | 1,848 | -13.7% | 0.01% | -21.4% |
| Q2 2018 | $336,000 | +3.1% | 2,142 | +17.0% | 0.01% | -6.7% |
| Q1 2018 | $326,000 | 0.0% | 1,830 | 0.0% | 0.02% | 0.0% |
| Q4 2017 | $326,000 | +226.0% | 1,830 | +150.7% | 0.02% | +275.0% |
| Q3 2017 | $100,000 | -66.4% | 730 | -74.3% | 0.00% | -69.2% |
| Q2 2017 | $298,000 | +2028.6% | 2,839 | +1792.7% | 0.01% | +1200.0% |
| Q1 2017 | $14,000 | +16.7% | 150 | -25.0% | 0.00% | 0.0% |
| Q4 2016 | $12,000 | +71.4% | 200 | +100.0% | 0.00% | – |
| Q3 2016 | $7,000 | +250.0% | 100 | +100.0% | 0.00% | – |
| Q2 2016 | $2,000 | 0.0% | 50 | +525.0% | 0.00% | – |
| Q1 2016 | $2,000 | -75.0% | 8 | -93.6% | 0.00% | -100.0% |
| Q4 2015 | $8,000 | – | 125 | – | 0.00% | – |
Download | ||||||
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% |