BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 306 filers reported holding BLUEBIRD BIO INC in Q1 2018. The put-call ratio across all filers is 0.94 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2018 | $4,331,000 | -64.5% | 25,364 | -63.0% | 0.17% | -64.9% |
| Q4 2017 | $12,197,000 | -40.0% | 68,485 | -53.7% | 0.48% | -42.7% |
| Q3 2017 | $20,314,000 | +27.1% | 147,897 | -2.8% | 0.85% | +21.5% |
| Q2 2017 | $15,986,000 | +321.7% | 152,174 | +264.9% | 0.70% | +302.9% |
| Q1 2017 | $3,791,000 | -49.0% | 41,702 | -65.4% | 0.17% | -51.1% |
| Q4 2016 | $7,439,000 | -66.1% | 120,572 | -62.8% | 0.35% | -68.3% |
| Q3 2016 | $21,951,000 | +230.1% | 323,863 | +110.8% | 1.12% | +199.5% |
| Q2 2016 | $6,650,000 | -26.2% | 153,610 | -27.6% | 0.37% | -26.3% |
| Q1 2016 | $9,014,000 | -27.0% | 212,085 | +10.2% | 0.51% | -22.4% |
| Q4 2015 | $12,354,000 | +177.3% | 192,375 | +269.4% | 0.65% | +123.3% |
| Q3 2015 | $4,455,000 | -30.0% | 52,079 | +37.8% | 0.29% | -40.7% |
| Q2 2015 | $6,362,000 | -20.0% | 37,784 | -36.9% | 0.49% | -24.5% |
| Q1 2015 | $7,955,000 | -50.2% | 59,912 | -65.6% | 0.65% | -53.0% |
| Q4 2014 | $15,966,000 | +86.1% | 174,070 | -27.2% | 1.39% | +68.6% |
| Q3 2014 | $8,581,000 | – | 239,151 | – | 0.82% | – |
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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% |