BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 255 filers reported holding BLUEBIRD BIO INC in Q4 2018. The put-call ratio across all filers is 0.54 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $10,000 | +900.0% | 1,080 | +958.8% | 0.00% | – |
| Q3 2021 | $1,000 | -66.7% | 102 | 0.0% | 0.00% | – |
| Q2 2021 | $3,000 | 0.0% | 102 | 0.0% | 0.00% | – |
| Q1 2021 | $3,000 | 0.0% | 102 | 0.0% | 0.00% | – |
| Q4 2020 | $3,000 | -40.0% | 102 | 0.0% | 0.00% | – |
| Q3 2020 | $5,000 | -16.7% | 102 | 0.0% | 0.00% | – |
| Q2 2020 | $6,000 | +50.0% | 102 | 0.0% | 0.00% | – |
| Q1 2020 | $4,000 | -55.6% | 102 | 0.0% | 0.00% | – |
| Q4 2019 | $9,000 | 0.0% | 102 | 0.0% | 0.00% | -100.0% |
| Q3 2019 | $9,000 | -52.6% | 102 | -35.0% | 0.00% | 0.0% |
| Q2 2019 | $19,000 | -20.8% | 157 | 0.0% | 0.00% | -50.0% |
| Q1 2019 | $24,000 | +14.3% | 157 | -29.3% | 0.00% | 0.0% |
| Q4 2018 | $21,000 | -34.4% | 222 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $32,000 | -5.9% | 222 | 0.0% | 0.00% | -33.3% |
| Q2 2018 | $34,000 | +30.8% | 222 | +41.4% | 0.00% | +50.0% |
| Q1 2018 | $26,000 | -3.7% | 157 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $27,000 | +92.9% | 157 | +53.9% | 0.00% | +100.0% |
| Q3 2017 | $14,000 | -73.1% | 102 | -79.6% | 0.00% | -80.0% |
| Q2 2017 | $52,000 | – | 500 | – | 0.01% | – |
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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% |