BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 197 filers reported holding BLUEBIRD BIO INC in Q3 2021. The put-call ratio across all filers is 1.22 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $208,000 | -44.2% | 6,501 | -24.5% | 0.00% | – |
| Q4 2020 | $373,000 | -70.1% | 8,609 | -62.8% | 0.00% | -100.0% |
| Q3 2020 | $1,249,000 | +8.5% | 23,160 | +22.8% | 0.00% | 0.0% |
| Q2 2020 | $1,151,000 | +102.6% | 18,860 | +52.7% | 0.00% | 0.0% |
| Q1 2020 | $568,000 | -20.2% | 12,355 | +52.3% | 0.00% | 0.0% |
| Q4 2019 | $712,000 | -31.7% | 8,113 | -28.5% | 0.00% | 0.0% |
| Q3 2019 | $1,042,000 | -20.3% | 11,351 | +10.4% | 0.00% | -50.0% |
| Q2 2019 | $1,308,000 | -11.3% | 10,281 | +9.8% | 0.00% | 0.0% |
| Q1 2019 | $1,474,000 | +64.0% | 9,366 | +3.3% | 0.00% | +100.0% |
| Q4 2018 | $899,000 | +1373.8% | 9,063 | +2241.9% | 0.00% | – |
| Q2 2018 | $61,000 | -4.7% | 387 | +2.7% | 0.00% | – |
| Q1 2018 | $64,000 | -1.5% | 377 | +2.7% | 0.00% | – |
| Q4 2017 | $65,000 | +44.4% | 367 | +13.6% | 0.00% | – |
| Q3 2017 | $45,000 | +309.1% | 323 | +201.9% | 0.00% | – |
| Q2 2017 | $11,000 | +10.0% | 107 | -7.8% | 0.00% | – |
| Q1 2017 | $10,000 | – | 116 | – | 0.00% | – |
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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% |