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 | $224,000 | -64.7% | 11,698 | -41.1% | 0.01% | -66.7% |
| Q2 2021 | $635,000 | +6.2% | 19,850 | 0.0% | 0.02% | -4.5% |
| Q1 2021 | $598,000 | -30.3% | 19,850 | +0.1% | 0.02% | -29.0% |
| Q4 2020 | $858,000 | -17.2% | 19,821 | +3.2% | 0.03% | -31.1% |
| Q3 2020 | $1,036,000 | -8.3% | 19,205 | +3.7% | 0.04% | -10.0% |
| Q2 2020 | $1,130,000 | +48.5% | 18,516 | +11.8% | 0.05% | +38.9% |
| Q1 2020 | $761,000 | -39.5% | 16,558 | +15.6% | 0.04% | +2.9% |
| Q4 2019 | $1,257,000 | -6.4% | 14,327 | -2.1% | 0.04% | 0.0% |
| Q3 2019 | $1,343,000 | -27.3% | 14,630 | +0.7% | 0.04% | -25.5% |
| Q2 2019 | $1,848,000 | -21.7% | 14,530 | -3.2% | 0.05% | -21.7% |
| Q1 2019 | $2,361,000 | +58.7% | 15,005 | 0.0% | 0.06% | +57.9% |
| Q4 2018 | $1,488,000 | -34.3% | 15,005 | -3.3% | 0.04% | -29.6% |
| Q3 2018 | $2,266,000 | +6.6% | 15,523 | +14.6% | 0.05% | +5.9% |
| Q2 2018 | $2,125,000 | -35.5% | 13,542 | -29.8% | 0.05% | -39.3% |
| Q1 2018 | $3,293,000 | +49.9% | 19,287 | +56.3% | 0.08% | +47.4% |
| Q4 2017 | $2,197,000 | -16.2% | 12,337 | -35.4% | 0.06% | -16.2% |
| Q3 2017 | $2,622,000 | – | 19,090 | – | 0.07% | – |
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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% |