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 | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $571,000 | -15.9% | 13,192 | +4.8% | 0.01% | -27.3% |
| Q3 2020 | $679,000 | -9.5% | 12,592 | +2.4% | 0.01% | -21.4% |
| Q2 2020 | $750,000 | +55.3% | 12,292 | +17.2% | 0.01% | +40.0% |
| Q1 2020 | $483,000 | -47.6% | 10,492 | 0.0% | 0.01% | -37.5% |
| Q4 2019 | $921,000 | -3.5% | 10,492 | +1.0% | 0.02% | -11.1% |
| Q3 2019 | $954,000 | -27.8% | 10,392 | 0.0% | 0.02% | -28.0% |
| Q2 2019 | $1,322,000 | -17.8% | 10,392 | +1.6% | 0.02% | -21.9% |
| Q1 2019 | $1,609,000 | +60.6% | 10,226 | +1.2% | 0.03% | +39.1% |
| Q4 2018 | $1,002,000 | -32.1% | 10,100 | 0.0% | 0.02% | -20.7% |
| Q3 2018 | $1,475,000 | +1.0% | 10,100 | +8.6% | 0.03% | -3.3% |
| Q2 2018 | $1,460,000 | +436.8% | 9,300 | +45.3% | 0.03% | +328.6% |
| Q1 2016 | $272,000 | -33.8% | 6,400 | 0.0% | 0.01% | -36.4% |
| Q4 2015 | $411,000 | -25.0% | 6,400 | 0.0% | 0.01% | -31.2% |
| Q3 2015 | $548,000 | -44.9% | 6,400 | +8.5% | 0.02% | -38.5% |
| Q2 2015 | $994,000 | – | 5,900 | – | 0.03% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 1,550,000 | $7,518,000 | 1.50% |
| Birchview Capital, LP | 84,000 | $407,000 | 0.29% |
| PDT Partners, LLC | 519,485 | $2,520,000 | 0.22% |
| OCCUDO QUANTITATIVE STRATEGIES LP | 320,922 | $1,556,000 | 0.13% |
| Virtus ETF Advisers LLC | 40,607 | $197,000 | 0.09% |
| Baker Brothers Advisors | 2,499,715 | $12,124,000 | 0.07% |
| Green Alpha Advisors, LLC | 14,660 | $71,000 | 0.05% |
| Quinn Opportunity Partners LLC | 140,824 | $683,000 | 0.03% |
| Rafferty Asset Management, LLC | 979,122 | $4,749,000 | 0.03% |
| Inspire Investing, LLC | 48,724 | $236,000 | 0.03% |