BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 177 filers reported holding BLUEBIRD BIO INC in Q4 2021. The put-call ratio across all filers is 1.00 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $769 | -7.6% | 253 | 0.0% | 0.00% | – |
| Q2 2023 | $832 | +3.4% | 253 | 0.0% | 0.00% | – |
| Q1 2023 | $805 | -54.0% | 253 | 0.0% | 0.00% | – |
| Q4 2022 | $1,751 | -70.8% | 253 | 0.0% | 0.00% | – |
| Q3 2022 | $6,000 | 0.0% | 253 | 0.0% | 0.00% | – |
| Q2 2022 | $6,000 | 0.0% | 253 | 0.0% | 0.00% | – |
| Q4 2021 | $6,000 | -25.0% | 253 | 0.0% | 0.00% | -100.0% |
| Q2 2021 | $8,000 | 0.0% | 253 | 0.0% | 0.00% | 0.0% |
| Q1 2021 | $8,000 | -27.3% | 253 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $11,000 | -21.4% | 253 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $14,000 | -6.7% | 253 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $15,000 | +25.0% | 253 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $12,000 | -45.5% | 253 | 0.0% | 0.00% | -50.0% |
| Q4 2019 | $22,000 | -4.3% | 253 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $23,000 | -28.1% | 253 | 0.0% | 0.00% | -33.3% |
| Q2 2019 | $32,000 | +14.3% | 253 | +40.6% | 0.00% | +50.0% |
| Q1 2019 | $28,000 | +64.7% | 180 | +4.0% | 0.00% | 0.0% |
| Q4 2018 | $17,000 | -32.0% | 173 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $25,000 | +47.1% | 173 | +55.9% | 0.00% | 0.0% |
| Q2 2018 | $17,000 | +41.7% | 111 | -44.5% | 0.00% | +100.0% |
| Q4 2016 | $12,000 | +9.1% | 200 | -18.4% | 0.00% | 0.0% |
| Q2 2016 | $11,000 | +10.0% | 245 | 0.0% | 0.00% | 0.0% |
| Q1 2016 | $10,000 | -16.7% | 245 | +26.9% | 0.00% | -50.0% |
| Q4 2015 | $12,000 | – | 193 | – | 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% |