BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 272 filers reported holding BLUEBIRD BIO INC in Q4 2020. The put-call ratio across all filers is 1.17 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $731,000 | -30.5% | 24,251 | -0.2% | 0.01% | -28.6% |
| Q4 2020 | $1,052,000 | -19.6% | 24,311 | +0.2% | 0.01% | -30.0% |
| Q3 2020 | $1,308,000 | -9.7% | 24,251 | +2.2% | 0.01% | -16.7% |
| Q2 2020 | $1,449,000 | +38.7% | 23,731 | +4.4% | 0.01% | +33.3% |
| Q1 2020 | $1,045,000 | -10.4% | 22,736 | +71.1% | 0.01% | -10.0% |
| Q4 2019 | $1,166,000 | -3.6% | 13,286 | +0.8% | 0.01% | -9.1% |
| Q3 2019 | $1,210,000 | -64.9% | 13,176 | -51.4% | 0.01% | -47.6% |
| Q2 2019 | $3,447,000 | -8.7% | 27,102 | +12.9% | 0.02% | -12.5% |
| Q1 2019 | $3,776,000 | +59.9% | 24,000 | +0.8% | 0.02% | +41.2% |
| Q4 2018 | $2,362,000 | -31.7% | 23,808 | +0.6% | 0.02% | -22.7% |
| Q3 2018 | $3,457,000 | +73.3% | 23,677 | +86.3% | 0.02% | +4.8% |
| Q2 2018 | $1,995,000 | – | 12,708 | – | 0.02% | – |
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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% |