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 | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $0 | -100.0% | 16 | -42.9% | 0.00% | – |
| Q2 2021 | $1,000 | 0.0% | 28 | 0.0% | 0.00% | – |
| Q1 2021 | $1,000 | 0.0% | 28 | 0.0% | 0.00% | – |
| Q4 2020 | $1,000 | -50.0% | 28 | 0.0% | 0.00% | – |
| Q3 2020 | $2,000 | -50.0% | 28 | -55.6% | 0.00% | – |
| Q2 2020 | $4,000 | -50.0% | 63 | -62.3% | 0.00% | -100.0% |
| Q1 2020 | $8,000 | +33.3% | 167 | +135.2% | 0.00% | – |
| Q4 2019 | $6,000 | 0.0% | 71 | +7.6% | 0.00% | – |
| Q3 2019 | $6,000 | +20.0% | 66 | +65.0% | 0.00% | – |
| Q2 2019 | $5,000 | -100.0% | 40 | -80.9% | 0.00% | -100.0% |
| Q2 2018 | $32,803,000 | +36757.3% | 209 | -60.1% | 0.00% | -62.5% |
| Q1 2018 | $89,000 | -21.9% | 524 | -18.3% | 0.01% | -20.0% |
| Q4 2017 | $114,000 | +2750.0% | 641 | +2110.3% | 0.01% | – |
| Q3 2017 | $4,000 | +33.3% | 29 | -3.3% | 0.00% | – |
| Q2 2017 | $3,000 | -99.9% | 30 | -99.8% | 0.00% | -100.0% |
| Q2 2015 | $2,171,000 | – | 12,899 | – | 0.22% | – |
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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% |