BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 255 filers reported holding BLUEBIRD BIO INC in Q4 2018. The put-call ratio across all filers is 0.54 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $150,000 | -76.2% | 30,900 | +47.7% | 0.00% | -66.7% |
| Q1 2021 | $631,000 | -89.1% | 20,914 | -84.3% | 0.00% | -88.0% |
| Q4 2020 | $5,772,000 | -38.3% | 133,379 | -23.1% | 0.02% | -32.4% |
| Q3 2020 | $9,359,000 | +85.7% | 173,461 | +110.0% | 0.04% | +48.0% |
| Q2 2020 | $5,041,000 | +317.3% | 82,585 | +975.2% | 0.02% | +400.0% |
| Q1 2019 | $1,208,000 | +35.6% | 7,681 | +25.7% | 0.01% | +66.7% |
| Q3 2018 | $891,000 | +82.2% | 6,109 | +95.8% | 0.00% | +50.0% |
| Q2 2018 | $489,000 | -91.5% | 3,120 | -90.8% | 0.00% | -92.3% |
| Q1 2018 | $5,779,000 | – | 33,846 | – | 0.03% | – |
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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% |