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 | $3,183 | -7.0% | 1,047 | +0.7% | 0.00% | – |
| Q2 2023 | $3,422 | +113966.7% | 1,040 | 0.0% | 0.00% | – |
| Q1 2023 | $3 | -62.5% | 1,040 | -5.1% | 0.00% | – |
| Q4 2022 | $8 | -99.9% | 1,096 | 0.0% | 0.00% | – |
| Q3 2022 | $7,000 | +75.0% | 1,096 | +8.5% | 0.00% | – |
| Q2 2022 | $4,000 | -20.0% | 1,010 | 0.0% | 0.00% | – |
| Q1 2022 | $5,000 | -37.5% | 1,010 | 0.0% | 0.00% | – |
| Q4 2021 | $8,000 | -57.9% | 1,010 | 0.0% | 0.00% | – |
| Q3 2021 | $19,000 | -78.9% | 1,010 | -64.1% | 0.00% | -100.0% |
| Q2 2021 | $90,000 | -32.3% | 2,810 | -36.1% | 0.00% | 0.0% |
| Q1 2021 | $133,000 | -28.5% | 4,400 | +2.3% | 0.00% | 0.0% |
| Q4 2020 | $186,000 | -49.7% | 4,300 | -37.3% | 0.00% | -66.7% |
| Q3 2020 | $370,000 | +8.5% | 6,856 | +22.9% | 0.00% | 0.0% |
| Q2 2020 | $341,000 | +301.2% | 5,579 | +199.9% | 0.00% | +200.0% |
| Q1 2020 | $85,000 | -15.0% | 1,860 | +63.2% | 0.00% | 0.0% |
| Q4 2019 | $100,000 | +3.1% | 1,140 | +7.5% | 0.00% | 0.0% |
| Q3 2019 | $97,000 | +1516.7% | 1,060 | +2020.0% | 0.00% | – |
| Q2 2019 | $6,000 | +200.0% | 50 | +400.0% | 0.00% | – |
| Q1 2019 | $2,000 | -99.2% | 10 | -99.6% | 0.00% | -100.0% |
| Q4 2018 | $249,000 | -32.2% | 2,512 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $367,000 | +3977.8% | 2,512 | +4086.7% | 0.00% | – |
| Q2 2018 | $9,000 | -76.3% | 60 | -72.7% | 0.00% | – |
| Q1 2018 | $38,000 | -26.9% | 220 | -24.1% | 0.00% | -100.0% |
| Q4 2017 | $52,000 | +44.4% | 290 | +11.5% | 0.00% | – |
| Q3 2017 | $36,000 | +33.3% | 260 | 0.0% | 0.00% | – |
| Q2 2017 | $27,000 | +42.1% | 260 | +23.8% | 0.00% | – |
| Q1 2017 | $19,000 | -24.0% | 210 | -47.5% | 0.00% | – |
| Q4 2016 | $25,000 | -26.5% | 400 | -20.0% | 0.00% | – |
| Q3 2016 | $34,000 | -75.7% | 500 | -84.8% | 0.00% | -100.0% |
| Q1 2016 | $140,000 | – | 3,300 | – | 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% |