BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 236 filers reported holding BLUEBIRD BIO INC in Q2 2021. The put-call ratio across all filers is 1.04 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $33,000 | +3200.0% | 1,758 | +3217.0% | 0.01% | – |
| Q2 2021 | $1,000 | 0.0% | 53 | +10.4% | 0.00% | – |
| Q1 2021 | $1,000 | -87.5% | 48 | -74.3% | 0.00% | -100.0% |
| Q4 2020 | $8,000 | -27.3% | 187 | -14.6% | 0.00% | -33.3% |
| Q3 2020 | $11,000 | +175.0% | 219 | +184.4% | 0.00% | +200.0% |
| Q2 2020 | $4,000 | -73.3% | 77 | -55.7% | 0.00% | -75.0% |
| Q4 2019 | $15,000 | +400.0% | 174 | +461.3% | 0.00% | +300.0% |
| Q2 2019 | $3,000 | -50.0% | 31 | -22.5% | 0.00% | -50.0% |
| Q1 2019 | $6,000 | – | 40 | – | 0.00% | – |
| Q4 2018 | $0 | – | 0 | – | 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% |