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 | $258,000 | -26.5% | 5,955 | -8.4% | 0.00% | -42.9% |
| Q3 2020 | $351,000 | -10.9% | 6,501 | +0.6% | 0.01% | -12.5% |
| Q2 2020 | $394,000 | +36.8% | 6,462 | +3.0% | 0.01% | +14.3% |
| Q1 2020 | $288,000 | -27.1% | 6,271 | +39.4% | 0.01% | -12.5% |
| Q4 2019 | $395,000 | -15.6% | 4,499 | -11.8% | 0.01% | -20.0% |
| Q3 2019 | $468,000 | -18.2% | 5,101 | +13.5% | 0.01% | -23.1% |
| Q2 2019 | $572,000 | +2.7% | 4,494 | +27.1% | 0.01% | 0.0% |
| Q1 2019 | $557,000 | +34.9% | 3,537 | -15.1% | 0.01% | +30.0% |
| Q4 2018 | $413,000 | +41200.0% | 4,164 | +46166.7% | 0.01% | – |
| Q3 2017 | $1,000 | 0.0% | 9 | 0.0% | 0.00% | – |
| Q2 2017 | $1,000 | 0.0% | 9 | -40.0% | 0.00% | – |
| Q1 2017 | $1,000 | – | 15 | – | 0.00% | – |
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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% |