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 | $1,991,200 | +101.7% | 655,000 | +118.3% | 0.01% | +14.3% |
| Q2 2023 | $987,000 | -48.3% | 300,000 | -50.0% | 0.01% | -12.5% |
| Q1 2023 | $1,908,000 | +512.7% | 600,000 | +1233.3% | 0.01% | +166.7% |
| Q4 2022 | $311,400 | -64.9% | 45,000 | -67.9% | 0.00% | -62.5% |
| Q3 2022 | $886,000 | -40.3% | 140,000 | +409.1% | 0.01% | -63.6% |
| Q3 2020 | $1,484,000 | -30.5% | 27,500 | -21.4% | 0.02% | -40.5% |
| Q2 2020 | $2,136,000 | +16.2% | 35,000 | -12.5% | 0.04% | -19.6% |
| Q1 2020 | $1,838,000 | -67.9% | 40,000 | -11.1% | 0.05% | -64.9% |
| Q2 2019 | $5,724,000 | +142.5% | 45,000 | +200.0% | 0.13% | +336.7% |
| Q1 2019 | $2,360,000 | +5.0% | 15,000 | -2.6% | 0.03% | +7.1% |
| Q3 2018 | $2,248,000 | – | 15,400 | – | 0.03% | – |
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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% |