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 | $1,000 | -50.0% | 13 | -43.5% | 0.00% | – |
| Q4 2019 | $2,000 | -100.0% | 23 | -100.0% | 0.00% | -100.0% |
| Q3 2019 | $11,362,000 | -5.8% | 123,744 | +30.5% | 0.06% | -7.8% |
| Q2 2019 | $12,060,000 | -15.4% | 94,817 | +4.6% | 0.06% | -21.0% |
| Q1 2019 | $14,263,000 | +85.6% | 90,657 | +17.1% | 0.08% | +52.8% |
| Q4 2018 | $7,683,000 | -40.7% | 77,449 | -12.8% | 0.05% | -30.3% |
| Q3 2018 | $12,966,000 | -6.3% | 88,806 | +0.7% | 0.08% | -14.6% |
| Q2 2018 | $13,838,000 | -4.3% | 88,167 | +4.1% | 0.09% | -17.6% |
| Q1 2018 | $14,456,000 | – | 84,662 | – | 0.11% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Sessa Capital IM, L.P. | 1,834,965 | $35,066,000 | 1.72% |
| Birchview Capital, LP | 84,000 | $1,605,000 | 1.09% |
| ARMISTICE CAPITAL, LLC | 2,472,000 | $47,240,000 | 0.80% |
| EcoR1 Capital, LLC | 802,507 | $15,336,000 | 0.53% |
| Parametrica Management Ltd | 36,919 | $706,000 | 0.53% |
| Bain Capital Life Sciences Investors, LLC | 538,179 | $7,239,000 | 0.45% |
| APPLETON GROUP, LLC | 19,495 | $373,000 | 0.32% |
| MANGROVE PARTNERS IM, LLC | 175,587 | $3,355,000 | 0.30% |
| Quinn Opportunity Partners LLC | 230,100 | $4,397,000 | 0.28% |
| PDT Partners, LLC | 171,700 | $3,281,000 | 0.24% |