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 2021 | $214,000 | -31.6% | 11,200 | +14.3% | 0.01% | -36.4% |
| Q2 2021 | $313,000 | -4.9% | 9,800 | +60.7% | 0.01% | -35.3% |
| Q3 2020 | $329,000 | -11.6% | 6,100 | 0.0% | 0.02% | -19.0% |
| Q2 2020 | $372,000 | +32.9% | 6,100 | 0.0% | 0.02% | +5.0% |
| Q1 2020 | $280,000 | -47.7% | 6,100 | 0.0% | 0.02% | -33.3% |
| Q4 2019 | $535,000 | +110.6% | 6,100 | +205.0% | 0.03% | +87.5% |
| Q2 2019 | $254,000 | -19.4% | 2,000 | 0.0% | 0.02% | -20.0% |
| Q1 2019 | $315,000 | +7.9% | 2,000 | 0.0% | 0.02% | +17.6% |
| Q3 2018 | $292,000 | -7.0% | 2,000 | 0.0% | 0.02% | -10.5% |
| Q2 2018 | $314,000 | -8.2% | 2,000 | 0.0% | 0.02% | -13.6% |
| Q1 2018 | $342,000 | -23.1% | 2,000 | -20.0% | 0.02% | -21.4% |
| Q4 2017 | $445,000 | +38.6% | 2,500 | -50.0% | 0.03% | -80.3% |
| Q4 2015 | $321,000 | – | 5,000 | – | 0.14% | – |
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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% |