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 2020 | $39,000 | -98.5% | 714 | -98.3% | 0.01% | -98.8% |
| Q2 2020 | $2,566,000 | +33.5% | 42,030 | +0.5% | 0.81% | -8.2% |
| Q1 2020 | $1,922,000 | -49.4% | 41,824 | -3.4% | 0.88% | -46.9% |
| Q4 2019 | $3,801,000 | +30.2% | 43,312 | +36.2% | 1.65% | +14.8% |
| Q3 2019 | $2,920,000 | -26.0% | 31,803 | +2.5% | 1.44% | -27.3% |
| Q2 2019 | $3,948,000 | -16.9% | 31,035 | +2.8% | 1.98% | -20.9% |
| Q1 2019 | $4,749,000 | +765.0% | 30,182 | +445.7% | 2.51% | +610.2% |
| Q4 2018 | $549,000 | -85.7% | 5,531 | -78.9% | 0.35% | -81.1% |
| Q3 2018 | $3,835,000 | +8.6% | 26,266 | +16.7% | 1.86% | -5.4% |
| Q2 2018 | $3,532,000 | +18.1% | 22,501 | +28.4% | 1.97% | +12.9% |
| Q1 2018 | $2,991,000 | +1.9% | 17,518 | +6.3% | 1.75% | -9.7% |
| Q4 2017 | $2,935,000 | – | 16,477 | – | 1.93% | – |
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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% |