BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 238 filers reported holding BLUEBIRD BIO INC in Q1 2021. The put-call ratio across all filers is 1.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $5,391,000 | +20.5% | 124,594 | +50.3% | 0.04% | +2.6% |
| Q3 2020 | $4,473,000 | -83.7% | 82,903 | -81.6% | 0.04% | -84.0% |
| Q2 2020 | $27,459,000 | +233.5% | 449,846 | +151.1% | 0.24% | +164.1% |
| Q1 2020 | $8,233,000 | -34.7% | 179,128 | +24.7% | 0.09% | -1.1% |
| Q4 2019 | $12,605,000 | +215.4% | 143,650 | +230.0% | 0.09% | +200.0% |
| Q3 2019 | $3,997,000 | -70.7% | 43,534 | -59.5% | 0.03% | -69.9% |
| Q2 2019 | $13,661,000 | -41.0% | 107,396 | -27.0% | 0.10% | -37.6% |
| Q1 2019 | $23,152,000 | +56.3% | 147,158 | -1.4% | 0.16% | +37.5% |
| Q4 2018 | $14,811,000 | +47.0% | 149,302 | +116.3% | 0.12% | +84.6% |
| Q3 2018 | $10,076,000 | -32.3% | 69,015 | -27.2% | 0.06% | -38.1% |
| Q2 2018 | $14,886,000 | +69.4% | 94,846 | +84.2% | 0.10% | +64.1% |
| Q1 2018 | $8,790,000 | -49.2% | 51,481 | -47.0% | 0.06% | -49.2% |
| Q4 2017 | $17,294,000 | -18.4% | 97,101 | -37.1% | 0.13% | -17.6% |
| Q3 2017 | $21,205,000 | +186.1% | 154,389 | +118.8% | 0.15% | +183.3% |
| Q2 2017 | $7,411,000 | +42.6% | 70,548 | +23.4% | 0.05% | +42.1% |
| Q1 2017 | $5,198,000 | -58.2% | 57,184 | -71.6% | 0.04% | -60.4% |
| Q4 2016 | $12,430,000 | +74.7% | 201,454 | +91.9% | 0.10% | +68.4% |
| Q3 2016 | $7,117,000 | +169.1% | 104,998 | +71.8% | 0.06% | +159.1% |
| Q2 2016 | $2,645,000 | -32.9% | 61,103 | -34.1% | 0.02% | -29.0% |
| Q1 2016 | $3,939,000 | -58.2% | 92,693 | -36.8% | 0.03% | -60.3% |
| Q4 2015 | $9,422,000 | +724.3% | 146,707 | +998.4% | 0.08% | +680.0% |
| Q3 2015 | $1,143,000 | -69.2% | 13,357 | -39.4% | 0.01% | -63.0% |
| Q2 2015 | $3,713,000 | -87.7% | 22,052 | -91.2% | 0.03% | -87.6% |
| Q1 2015 | $30,200,000 | -31.0% | 250,065 | -47.6% | 0.22% | -32.3% |
| Q4 2014 | $43,791,000 | – | 477,443 | – | 0.32% | – |
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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% |