BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 238 filers reported holding BLUEBIRD BIO INC in Q1 2021. The put-call ratio across all filers is 1.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $439 | -99.9% | 79,300 | +116.7% | 0.04% | +55.2% |
| Q3 2022 | $423,000 | -2.3% | 36,600 | +33.1% | 0.03% | +38.1% |
| Q2 2022 | $433,000 | +5.1% | 27,500 | +100.7% | 0.02% | +23.5% |
| Q1 2022 | $412,000 | -17.1% | 13,700 | -57.8% | 0.02% | +30.8% |
| Q4 2021 | $497,000 | -57.6% | 32,500 | -52.5% | 0.01% | -65.8% |
| Q3 2021 | $1,172,000 | +22.0% | 68,421 | +27.4% | 0.04% | +26.7% |
| Q2 2021 | $961,000 | +14.7% | 53,705 | -4.9% | 0.03% | -31.8% |
| Q1 2021 | $838,000 | +87.1% | 56,472 | +54.3% | 0.04% | +238.5% |
| Q4 2020 | $448,000 | +78.5% | 36,600 | +36.1% | 0.01% | +8.3% |
| Q3 2020 | $251,000 | -81.6% | 26,900 | -65.9% | 0.01% | -84.0% |
| Q2 2020 | $1,361,000 | +36.9% | 78,957 | +40.6% | 0.08% | +11.9% |
| Q1 2020 | $994,000 | -55.9% | 56,142 | -29.4% | 0.07% | -46.0% |
| Q4 2019 | $2,253,000 | +747.0% | 79,482 | +274.9% | 0.12% | +463.6% |
| Q3 2019 | $266,000 | +28.5% | 21,200 | -8.6% | 0.02% | +37.5% |
| Q2 2019 | $207,000 | +10.1% | 23,200 | -9.4% | 0.02% | -5.9% |
| Q1 2019 | $188,000 | -5.1% | 25,600 | +73.0% | 0.02% | +41.7% |
| Q4 2018 | $198,000 | +1700.0% | 14,800 | +17.5% | 0.01% | +1100.0% |
| Q2 2018 | $11,000 | -95.3% | 12,600 | -9.4% | 0.00% | -91.7% |
| Q1 2018 | $232,000 | -74.6% | 13,900 | -67.2% | 0.01% | -68.4% |
| Q4 2017 | $913,000 | +189.8% | 42,400 | +253.3% | 0.04% | +153.3% |
| Q3 2017 | $315,000 | +85.3% | 12,000 | -77.2% | 0.02% | +66.7% |
| Q2 2017 | $170,000 | -31.2% | 52,600 | +1284.2% | 0.01% | -50.0% |
| Q1 2016 | $247,000 | +6.0% | 3,800 | -9.5% | 0.02% | +63.6% |
| Q4 2015 | $233,000 | -28.1% | 4,200 | -25.0% | 0.01% | -35.3% |
| Q3 2015 | $324,000 | +131.4% | 5,600 | -75.5% | 0.02% | +112.5% |
| Q2 2015 | $140,000 | – | 22,900 | -54.2% | 0.01% | – |
| Q1 2014 | $0 | – | 50,000 | – | 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% |