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 | $151,042 | -79.8% | 49,685 | -78.8% | 0.01% | -80.6% |
| Q1 2023 | $746,712 | +183.9% | 234,815 | +333.7% | 0.03% | +210.0% |
| Q1 2022 | $263,000 | -16.8% | 54,145 | +227.2% | 0.01% | -44.4% |
| Q3 2021 | $316,000 | +20.6% | 16,547 | +102.0% | 0.02% | +5.9% |
| Q2 2021 | $262,000 | -79.1% | 8,190 | -71.7% | 0.02% | -68.5% |
| Q4 2020 | $1,251,000 | +85.1% | 28,909 | +130.7% | 0.05% | +68.8% |
| Q3 2020 | $676,000 | -18.6% | 12,530 | -7.8% | 0.03% | -23.8% |
| Q2 2020 | $830,000 | +155.4% | 13,590 | +267.3% | 0.04% | +200.0% |
| Q4 2019 | $325,000 | -23.3% | 3,700 | +11.1% | 0.01% | -39.1% |
| Q2 2019 | $424,000 | – | 3,331 | – | 0.02% | – |
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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% |