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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $3,183 | -7.0% | 1,047 | +0.7% | 0.00% | – |
| Q2 2023 | $3,422 | +113966.7% | 1,040 | 0.0% | 0.00% | – |
| Q1 2023 | $3 | -62.5% | 1,040 | -5.1% | 0.00% | – |
| Q4 2022 | $8 | -99.9% | 1,096 | 0.0% | 0.00% | – |
| Q3 2022 | $7,000 | +75.0% | 1,096 | +8.5% | 0.00% | – |
| Q2 2022 | $4,000 | -20.0% | 1,010 | 0.0% | 0.00% | – |
| Q1 2022 | $5,000 | -37.5% | 1,010 | 0.0% | 0.00% | – |
| Q4 2021 | $8,000 | -57.9% | 1,010 | 0.0% | 0.00% | – |
| Q3 2021 | $19,000 | -78.9% | 1,010 | -64.1% | 0.00% | -100.0% |
| Q2 2021 | $90,000 | -32.3% | 2,810 | -36.1% | 0.00% | 0.0% |
| Q1 2021 | $133,000 | -28.5% | 4,400 | +2.3% | 0.00% | 0.0% |
| Q4 2020 | $186,000 | -49.7% | 4,300 | -37.3% | 0.00% | -66.7% |
| Q3 2020 | $370,000 | +8.5% | 6,856 | +22.9% | 0.00% | 0.0% |
| Q2 2020 | $341,000 | +301.2% | 5,579 | +199.9% | 0.00% | +200.0% |
| Q1 2020 | $85,000 | -15.0% | 1,860 | +63.2% | 0.00% | 0.0% |
| Q4 2019 | $100,000 | +3.1% | 1,140 | +7.5% | 0.00% | 0.0% |
| Q3 2019 | $97,000 | +1516.7% | 1,060 | +2020.0% | 0.00% | – |
| Q2 2019 | $6,000 | +200.0% | 50 | +400.0% | 0.00% | – |
| Q1 2019 | $2,000 | -99.2% | 10 | -99.6% | 0.00% | -100.0% |
| Q4 2018 | $249,000 | -32.2% | 2,512 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $367,000 | +3977.8% | 2,512 | +4086.7% | 0.00% | – |
| Q2 2018 | $9,000 | -76.3% | 60 | -72.7% | 0.00% | – |
| Q1 2018 | $38,000 | -26.9% | 220 | -24.1% | 0.00% | -100.0% |
| Q4 2017 | $52,000 | +44.4% | 290 | +11.5% | 0.00% | – |
| Q3 2017 | $36,000 | +33.3% | 260 | 0.0% | 0.00% | – |
| Q2 2017 | $27,000 | +42.1% | 260 | +23.8% | 0.00% | – |
| Q1 2017 | $19,000 | -24.0% | 210 | -47.5% | 0.00% | – |
| Q4 2016 | $25,000 | -26.5% | 400 | -20.0% | 0.00% | – |
| Q3 2016 | $34,000 | -75.7% | 500 | -84.8% | 0.00% | -100.0% |
| Q1 2016 | $140,000 | – | 3,300 | – | 0.00% | – |
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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% |