BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 282 filers reported holding BLUEBIRD BIO INC in Q4 2019. The put-call ratio across all filers is 0.80 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% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 6,335,528 | $40,104,000 | 4.92% |
| qPULA Trading Management LP | 14,344 | $91,000 | 0.80% |
| Frazier Life Sciences Management, L.P. | 1,440,757 | $9,120,000 | 0.70% |
| Ikarian Capital, LLC | 462,628 | $2,928,000 | 0.58% |
| Birchview Capital, LP | 98,000 | $620,000 | 0.44% |
| HealthCor Management, L.P. | 455,000 | $2,880,000 | 0.36% |
| Financial Advocates Investment Management | 45,071 | $3,538,000 | 0.29% |
| PDT Partners, LLC | 262,767 | $1,663,000 | 0.25% |
| Monaco Asset Management SAM | 80,000 | $506,000 | 0.19% |
| Summit X, LLC | 103,424 | $651,000 | 0.19% |