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 | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $13,000 | -18.8% | 320 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $16,000 | -15.8% | 320 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $19,000 | +35.7% | 320 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $14,000 | -22.2% | 320 | +53.1% | 0.00% | 0.0% |
| Q4 2019 | $18,000 | 0.0% | 209 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $18,000 | -28.0% | 209 | 0.0% | 0.00% | -50.0% |
| Q2 2019 | $25,000 | -21.9% | 209 | 0.0% | 0.00% | -33.3% |
| Q1 2019 | $32,000 | +60.0% | 209 | 0.0% | 0.00% | +50.0% |
| Q4 2018 | $20,000 | – | 209 | – | 0.00% | – |
Download | ||||||
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% |