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 | $92,106 | -6.3% | 30,298 | +1.4% | 0.00% | 0.0% |
| Q2 2023 | $98,295 | +3.6% | 29,877 | +0.2% | 0.00% | 0.0% |
| Q1 2023 | $94,834 | -37.0% | 29,822 | +37.0% | 0.00% | 0.0% |
| Q4 2022 | $150,593 | +63.7% | 21,762 | +14.8% | 0.00% | 0.0% |
| Q1 2022 | $92,000 | -49.5% | 18,951 | +4.2% | 0.00% | 0.0% |
| Q4 2021 | $182,000 | -48.1% | 18,189 | -1.0% | 0.00% | -66.7% |
| Q3 2021 | $351,000 | -39.9% | 18,372 | +0.7% | 0.00% | -40.0% |
| Q2 2021 | $584,000 | +0.2% | 18,251 | -5.5% | 0.01% | 0.0% |
| Q1 2021 | $583,000 | -29.8% | 19,321 | +0.6% | 0.01% | -37.5% |
| Q4 2020 | $831,000 | -21.2% | 19,205 | -1.7% | 0.01% | -20.0% |
| Q3 2020 | $1,054,000 | +18.3% | 19,535 | +33.8% | 0.01% | -23.1% |
| Q2 2020 | $891,000 | +49.2% | 14,604 | +12.4% | 0.01% | +30.0% |
| Q1 2020 | $597,000 | – | 12,990 | – | 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% |