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 | ||||
|---|---|---|---|---|---|---|
| Q4 2017 | $8,922,000 | -38.9% | 50,100 | -52.9% | 0.13% | -21.6% |
| Q3 2017 | $14,600,000 | +32.6% | 106,300 | +1.4% | 0.17% | +0.6% |
| Q2 2017 | $11,009,000 | +1395.8% | 104,800 | +1193.8% | 0.17% | +1409.1% |
| Q1 2017 | $736,000 | -76.7% | 8,100 | -82.7% | 0.01% | -89.4% |
| Q3 2016 | $3,165,000 | -29.6% | 46,700 | +74.9% | 0.10% | -84.6% |
| Q2 2015 | $4,495,000 | +300.3% | 26,700 | +187.1% | 0.68% | +526.9% |
| Q1 2015 | $1,123,000 | – | 9,300 | – | 0.11% | – |
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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% |