BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 207 filers reported holding BLUEBIRD BIO INC in Q3 2016. The put-call ratio across all filers is 1.20 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2020 | $207,000 | -75.6% | 3,825 | -72.5% | 0.00% | -75.0% |
| Q2 2020 | $849,000 | +1315.0% | 13,900 | +969.2% | 0.01% | +1100.0% |
| Q1 2020 | $60,000 | -42.3% | 1,300 | +8.3% | 0.00% | 0.0% |
| Q4 2019 | $104,000 | -6.3% | 1,200 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $111,000 | -27.5% | 1,200 | 0.0% | 0.00% | -50.0% |
| Q2 2019 | $153,000 | -19.0% | 1,200 | 0.0% | 0.00% | 0.0% |
| Q1 2019 | $189,000 | +57.5% | 1,200 | -0.3% | 0.00% | 0.0% |
| Q4 2018 | $120,000 | -31.8% | 1,204 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $176,000 | -86.0% | 1,204 | -85.0% | 0.00% | -83.3% |
| Q2 2018 | $1,261,000 | -8.1% | 8,036 | 0.0% | 0.01% | -14.3% |
| Q1 2018 | $1,372,000 | +541.1% | 8,036 | +567.4% | 0.01% | +600.0% |
| Q4 2017 | $214,000 | +28.9% | 1,204 | -0.2% | 0.00% | +100.0% |
| Q3 2017 | $166,000 | +30.7% | 1,207 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $127,000 | +98.4% | 1,207 | +70.7% | 0.00% | 0.0% |
| Q1 2017 | $64,000 | +6300.0% | 707 | +10000.0% | 0.00% | – |
| Q4 2016 | $1,000 | 0.0% | 7 | 0.0% | 0.00% | – |
| Q3 2016 | $1,000 | 0.0% | 7 | 0.0% | 0.00% | – |
| Q2 2016 | $1,000 | 0.0% | 7 | +75.0% | 0.00% | – |
| Q4 2015 | $1,000 | – | 4 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 4,282,827 | $13,019,794 | 1.84% |
| Birchview Capital, LP | 455,200 | $1,383,808 | 1.18% |
| PFM Health Sciences, LP | 6,040,934 | $18,364,439 | 0.86% |
| Lion Point Capital, LP | 531,256 | $1,615,018 | 0.72% |
| Endurant Capital Management LP | 251,785 | $765,426 | 0.69% |
| Bleichroeder LP | 900,000 | $2,736,000 | 0.67% |
| Connacht Asset Management LP | 31,634 | $96,167 | 0.57% |
| Granahan Investment Management | 5,137,778 | $15,618,845 | 0.56% |
| Frazier Life Sciences Management, L.P. | 1,709,907 | $5,198,117 | 0.34% |
| Contrarius Investment Management Ltd | 1,308,002 | $3,976 | 0.22% |