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 2023 | $460 | -7.4% | 151 | 0.0% | 0.00% | – |
| Q2 2023 | $497 | +3.3% | 151 | 0.0% | 0.00% | – |
| Q1 2023 | $481 | +17.9% | 151 | +155.9% | 0.00% | – |
| Q4 2022 | $408 | -59.2% | 59 | -46.4% | 0.00% | – |
| Q1 2022 | $1,000 | 0.0% | 110 | +66.7% | 0.00% | – |
| Q4 2021 | $1,000 | 0.0% | 66 | +11.9% | 0.00% | – |
| Q3 2021 | $1,000 | -94.1% | 59 | -88.9% | 0.00% | -100.0% |
| Q2 2021 | $17,000 | +183.3% | 531 | +173.7% | 0.00% | +100.0% |
| Q1 2021 | $6,000 | 0.0% | 194 | +36.6% | 0.00% | 0.0% |
| Q4 2020 | $6,000 | -57.1% | 142 | -44.3% | 0.00% | -66.7% |
| Q3 2020 | $14,000 | +7.7% | 255 | +22.6% | 0.00% | 0.0% |
| Q2 2020 | $13,000 | -59.4% | 208 | -69.9% | 0.00% | -40.0% |
| Q1 2020 | $32,000 | -30.4% | 692 | +29.1% | 0.01% | -16.7% |
| Q4 2019 | $46,000 | +21.1% | 536 | +28.2% | 0.01% | 0.0% |
| Q3 2019 | $38,000 | -15.6% | 418 | +14.5% | 0.01% | -14.3% |
| Q2 2019 | $45,000 | -39.2% | 365 | -24.9% | 0.01% | -46.2% |
| Q1 2019 | $74,000 | +393.3% | 486 | +211.5% | 0.01% | +225.0% |
| Q4 2018 | $15,000 | -31.8% | 156 | -2.5% | 0.00% | -33.3% |
| Q3 2018 | $22,000 | -8.3% | 160 | +2.6% | 0.01% | -25.0% |
| Q2 2018 | $24,000 | -7.7% | 156 | 0.0% | 0.01% | -11.1% |
| Q1 2018 | $26,000 | -3.7% | 156 | 0.0% | 0.01% | -18.2% |
| Q4 2017 | $27,000 | +28.6% | 156 | 0.0% | 0.01% | +22.2% |
| Q3 2017 | $21,000 | +31.2% | 156 | 0.0% | 0.01% | +28.6% |
| Q2 2017 | $16,000 | +14.3% | 156 | 0.0% | 0.01% | +16.7% |
| Q1 2017 | $14,000 | +55.6% | 156 | 0.0% | 0.01% | +20.0% |
| Q4 2016 | $9,000 | -10.0% | 156 | 0.0% | 0.01% | -28.6% |
| Q3 2016 | $10,000 | +66.7% | 156 | 0.0% | 0.01% | +75.0% |
| Q2 2016 | $6,000 | -25.0% | 156 | +194.3% | 0.00% | -20.0% |
| Q2 2015 | $8,000 | – | 53 | – | 0.01% | – |
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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% |