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 | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $4,000 | -33.3% | 844 | +164.6% | 0.00% | 0.0% |
| Q3 2021 | $6,000 | +50.0% | 319 | +175.0% | 0.00% | 0.0% |
| Q2 2021 | $4,000 | – | 116 | +1188.9% | 0.00% | – |
| Q1 2020 | $0 | -100.0% | 9 | 0.0% | 0.00% | – |
| Q4 2019 | $1,000 | 0.0% | 9 | 0.0% | 0.00% | – |
| Q3 2019 | $1,000 | 0.0% | 9 | 0.0% | 0.00% | – |
| Q2 2019 | $1,000 | -50.0% | 9 | -18.2% | 0.00% | -100.0% |
| Q1 2019 | $2,000 | +100.0% | 11 | 0.0% | 0.00% | – |
| Q4 2018 | $1,000 | -50.0% | 11 | -8.3% | 0.00% | -100.0% |
| Q3 2018 | $2,000 | 0.0% | 12 | -20.0% | 0.00% | 0.0% |
| Q2 2018 | $2,000 | 0.0% | 15 | +36.4% | 0.00% | 0.0% |
| Q1 2018 | $2,000 | 0.0% | 11 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $2,000 | 0.0% | 11 | 0.0% | 0.00% | 0.0% |
| Q3 2017 | $2,000 | +100.0% | 11 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $1,000 | 0.0% | 11 | 0.0% | 0.00% | 0.0% |
| Q1 2017 | $1,000 | 0.0% | 11 | 0.0% | 0.00% | 0.0% |
| Q4 2016 | $1,000 | -87.5% | 11 | -90.1% | 0.00% | -75.0% |
| Q3 2016 | $8,000 | +60.0% | 111 | 0.0% | 0.00% | +33.3% |
| Q2 2016 | $5,000 | – | 111 | +909.1% | 0.00% | – |
| Q1 2016 | $0 | -100.0% | 11 | +37.5% | 0.00% | -100.0% |
| Q4 2015 | $1,000 | – | 8 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 6,335,528 | $40,104,000 | 4.92% |
| qPULA Trading Management LP | 14,344 | $91,000 | 0.80% |
| Frazier Life Sciences Management, L.P. | 1,440,757 | $9,120,000 | 0.70% |
| Ikarian Capital, LLC | 462,628 | $2,928,000 | 0.58% |
| Birchview Capital, LP | 98,000 | $620,000 | 0.44% |
| HealthCor Management, L.P. | 455,000 | $2,880,000 | 0.36% |
| Financial Advocates Investment Management | 45,071 | $3,538,000 | 0.29% |
| PDT Partners, LLC | 262,767 | $1,663,000 | 0.25% |
| Monaco Asset Management SAM | 80,000 | $506,000 | 0.19% |
| Summit X, LLC | 103,424 | $651,000 | 0.19% |