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 | ||||
|---|---|---|---|---|---|---|
| Q2 2022 | $2,000 | -33.3% | 541 | +1.7% | 0.00% | – |
| Q1 2022 | $3,000 | -80.0% | 532 | -63.9% | 0.00% | -100.0% |
| Q4 2021 | $15,000 | -50.0% | 1,475 | -6.9% | 0.00% | 0.0% |
| Q3 2021 | $30,000 | -42.3% | 1,585 | -3.3% | 0.00% | -50.0% |
| Q2 2021 | $52,000 | +6.1% | 1,639 | 0.0% | 0.00% | 0.0% |
| Q1 2021 | $49,000 | -31.9% | 1,639 | -1.9% | 0.00% | -50.0% |
| Q4 2020 | $72,000 | -21.7% | 1,671 | -2.3% | 0.00% | -33.3% |
| Q3 2020 | $92,000 | -11.5% | 1,711 | +0.4% | 0.01% | -25.0% |
| Q2 2020 | $104,000 | +28.4% | 1,705 | -3.1% | 0.01% | +14.3% |
| Q1 2020 | $81,000 | -79.2% | 1,760 | -60.3% | 0.01% | -74.1% |
| Q4 2019 | $389,000 | – | 4,434 | – | 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% |