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 | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $1,770,000 | +2.7% | 55,341 | -3.2% | 0.11% | -5.3% |
| Q1 2021 | $1,724,000 | +6.9% | 57,176 | +53.4% | 0.11% | 0.0% |
| Q4 2020 | $1,613,000 | -28.8% | 37,270 | -11.2% | 0.11% | -36.5% |
| Q3 2020 | $2,265,000 | +9.8% | 41,985 | +24.2% | 0.18% | -2.7% |
| Q2 2020 | $2,063,000 | +92.4% | 33,795 | +44.9% | 0.18% | +335.7% |
| Q1 2020 | $1,072,000 | -38.7% | 23,322 | +17.0% | 0.04% | -73.1% |
| Q4 2019 | $1,749,000 | +41.4% | 19,932 | +48.0% | 0.16% | +27.9% |
| Q3 2019 | $1,237,000 | -19.5% | 13,470 | +11.5% | 0.12% | -21.8% |
| Q2 2019 | $1,537,000 | -12.5% | 12,085 | +8.2% | 0.16% | -18.3% |
| Q1 2019 | $1,757,000 | +60.9% | 11,170 | +1.5% | 0.19% | +31.7% |
| Q4 2018 | $1,092,000 | -19.8% | 11,005 | +18.1% | 0.14% | +4.3% |
| Q3 2018 | $1,361,000 | +8.3% | 9,322 | +16.4% | 0.14% | +3.0% |
| Q2 2018 | $1,257,000 | +9.6% | 8,010 | +19.2% | 0.14% | +7.1% |
| Q1 2018 | $1,147,000 | +5.7% | 6,720 | +10.3% | 0.13% | +5.0% |
| Q4 2017 | $1,085,000 | +9.4% | 6,090 | -35.5% | 0.12% | -6.2% |
| Q3 2017 | $992,000 | 0.0% | 9,440 | 0.0% | 0.13% | +0.8% |
| Q2 2017 | $992,000 | +40.3% | 9,440 | +21.4% | 0.13% | +22.1% |
| Q1 2017 | $707,000 | – | 7,775 | – | 0.10% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 5,910,687 | $24,470,000 | 3.71% |
| Monaco Asset Management SAM | 306,142 | $1,267,000 | 0.55% |
| Parametrica Management Ltd | 90,105 | $374,000 | 0.41% |
| Kamunting Street Capital Management, L.P. | 55,200 | $229,000 | 0.31% |
| Birchview Capital, LP | 98,000 | $406,000 | 0.30% |
| Kamunting Street Capital Management, L.P. | 35,000 | $145,000 | 0.20% |
| PDT Partners, LLC | 519,477 | $2,151,000 | 0.19% |
| Graham Capital Management, L.P. | 781,912 | $3,237,000 | 0.13% |
| CAXTON ASSOCIATES LP | 220,154 | $911,000 | 0.09% |
| Baker Brothers Advisors | 2,499,715 | $10,349,000 | 0.06% |