BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 211 filers reported holding BLUEBIRD BIO INC in Q4 2016. The put-call ratio across all filers is 0.81 and the average weighting 0.1%.
Quarter-by-quarter ownership
Value | Shares | Weighting | ||||
---|---|---|---|---|---|---|
Q1 2021 | $281,000 | -89.6% | 9,330 | -69.8% | 0.00% | -87.5% |
Q4 2019 | $2,711,000 | +244.5% | 30,894 | +414.9% | 0.01% | +166.7% |
Q1 2019 | $787,000 | +52.2% | 6,000 | +15.0% | 0.00% | +50.0% |
Q4 2018 | $517,000 | +33.2% | 5,216 | +96.4% | 0.00% | +100.0% |
Q3 2018 | $388,000 | +1.8% | 2,656 | +9.5% | 0.00% | 0.0% |
Q2 2018 | $381,000 | +18.0% | 2,425 | +33.5% | 0.00% | 0.0% |
Q4 2017 | $323,000 | +330.7% | 1,816 | +154.3% | 0.00% | – |
Q2 2017 | $75,000 | -98.3% | 714 | -98.5% | 0.00% | -100.0% |
Q1 2017 | $4,358,000 | +47.4% | 47,945 | +0.1% | 0.02% | +33.3% |
Q4 2016 | $2,956,000 | +74.2% | 47,911 | +60.8% | 0.02% | +63.6% |
Q3 2016 | $1,697,000 | +51.9% | 29,801 | +15.1% | 0.01% | +37.5% |
Q2 2016 | $1,117,000 | -0.6% | 25,901 | -2.6% | 0.01% | -11.1% |
Q1 2016 | $1,124,000 | -20.3% | 26,601 | +21.1% | 0.01% | -25.0% |
Q4 2015 | $1,411,000 | +153.8% | 21,975 | +238.1% | 0.01% | +140.0% |
Q3 2015 | $556,000 | +2427.3% | 6,500 | +3511.1% | 0.01% | – |
Q1 2015 | $22,000 | +266.7% | 180 | +157.1% | 0.00% | – |
Q4 2014 | $6,000 | – | 70 | – | 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% |