BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 272 filers reported holding BLUEBIRD BIO INC in Q4 2020. The put-call ratio across all filers is 1.17 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $5,598,415 | -18.6% | 1,841,584 | -11.9% | 0.03% | -17.5% |
| Q2 2023 | $6,879,094 | +60.0% | 2,090,910 | +54.7% | 0.04% | +53.8% |
| Q1 2023 | $4,299,115 | -17.7% | 1,351,923 | +79.0% | 0.03% | -25.7% |
| Q4 2022 | $5,225,597 | +549.1% | 755,144 | +493.5% | 0.04% | +483.3% |
| Q3 2022 | $805,000 | +47.7% | 127,227 | -3.4% | 0.01% | +50.0% |
| Q2 2022 | $545,000 | -71.5% | 131,744 | -66.6% | 0.00% | -69.2% |
| Q1 2022 | $1,914,000 | -52.3% | 394,650 | -1.8% | 0.01% | -51.9% |
| Q4 2021 | $4,016,000 | -47.9% | 401,985 | -0.3% | 0.03% | -48.1% |
| Q3 2021 | $7,706,000 | -70.3% | 403,226 | -50.2% | 0.05% | -70.5% |
| Q2 2021 | $25,916,000 | +13.6% | 810,373 | +7.1% | 0.18% | 0.0% |
| Q1 2021 | $22,813,000 | -3.0% | 756,642 | +39.2% | 0.18% | -14.6% |
| Q4 2020 | $23,527,000 | +0.4% | 543,715 | +25.2% | 0.21% | -15.2% |
| Q3 2020 | $23,436,000 | +45.1% | 434,396 | +64.2% | 0.24% | +38.9% |
| Q2 2020 | $16,150,000 | +176.1% | 264,585 | +107.9% | 0.18% | +133.3% |
| Q1 2020 | $5,849,000 | +2454.1% | 127,267 | +9397.5% | 0.08% | +1775.0% |
| Q1 2018 | $229,000 | – | 1,340 | – | 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% |