BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 251 filers reported holding BLUEBIRD BIO INC in Q3 2019. The put-call ratio across all filers is 1.49 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 | 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% |