BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 296 filers reported holding BLUEBIRD BIO INC in Q1 2019. The put-call ratio across all filers is 0.60 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2020 | $910,000 | -43.3% | 19,800 | +8.2% | 0.02% | -28.0% |
| Q4 2019 | $1,606,000 | -30.6% | 18,300 | +0.5% | 0.02% | -37.5% |
| Q2 2019 | $2,315,000 | -36.3% | 18,200 | -21.2% | 0.04% | -80.0% |
| Q1 2019 | $3,634,000 | +183.9% | 23,100 | +79.1% | 0.20% | +138.1% |
| Q4 2018 | $1,280,000 | -23.1% | 12,900 | +13.2% | 0.08% | -20.8% |
| Q3 2018 | $1,664,000 | -17.8% | 11,400 | -11.6% | 0.11% | -38.7% |
| Q2 2018 | $2,025,000 | -10.8% | 12,900 | -3.0% | 0.17% | -23.1% |
| Q1 2018 | $2,271,000 | -33.2% | 13,300 | -30.4% | 0.22% | -36.6% |
| Q4 2017 | $3,402,000 | -1.3% | 19,100 | -23.9% | 0.36% | -1.7% |
| Q3 2017 | $3,447,000 | +48.4% | 25,100 | +13.6% | 0.36% | +31.3% |
| Q2 2017 | $2,322,000 | -11.9% | 22,100 | -23.8% | 0.28% | -21.7% |
| Q1 2017 | $2,636,000 | +47.3% | 29,000 | 0.0% | 0.35% | -4.1% |
| Q4 2016 | $1,789,000 | -9.0% | 29,000 | 0.0% | 0.37% | +3.1% |
| Q3 2016 | $1,966,000 | +56.7% | 29,000 | 0.0% | 0.36% | +50.4% |
| Q2 2016 | $1,255,000 | +1.8% | 29,000 | 0.0% | 0.24% | +5.4% |
| Q1 2016 | $1,233,000 | – | 29,000 | – | 0.22% | – |
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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% |