BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 314 filers reported holding BLUEBIRD BIO INC in Q2 2018. The put-call ratio across all filers is 0.60 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2018 | $236,000 | -33.9% | 2,381 | -2.5% | 0.00% | -40.0% |
| Q3 2018 | $357,000 | +8.5% | 2,442 | +16.4% | 0.01% | 0.0% |
| Q2 2018 | $329,000 | -8.1% | 2,098 | 0.0% | 0.01% | 0.0% |
| Q1 2018 | $358,000 | -7.0% | 2,098 | -3.0% | 0.01% | -16.7% |
| Q4 2017 | $385,000 | +13.2% | 2,162 | -12.6% | 0.01% | +20.0% |
| Q3 2017 | $340,000 | +53.8% | 2,474 | +17.8% | 0.01% | +66.7% |
| Q2 2017 | $221,000 | -0.9% | 2,100 | -14.6% | 0.00% | -25.0% |
| Q1 2017 | $223,000 | +12.1% | 2,458 | -23.8% | 0.00% | 0.0% |
| Q4 2016 | $199,000 | -63.3% | 3,225 | -59.7% | 0.00% | -60.0% |
| Q3 2016 | $542,000 | +95.7% | 8,000 | +25.0% | 0.01% | +100.0% |
| Q2 2016 | $277,000 | +30.7% | 6,400 | +28.0% | 0.01% | +25.0% |
| Q1 2016 | $212,000 | -34.0% | 5,000 | 0.0% | 0.00% | -33.3% |
| Q4 2015 | $321,000 | – | 5,000 | – | 0.01% | – |
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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% |