BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 197 filers reported holding BLUEBIRD BIO INC in Q3 2021. The put-call ratio across all filers is 1.22 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $84,757 | -60.9% | 26,653 | +293.2% | 0.01% | -16.7% |
| Q2 2021 | $217,000 | -36.4% | 6,778 | +7.3% | 0.01% | -62.5% |
| Q3 2020 | $341,000 | -41.8% | 6,315 | -34.3% | 0.02% | -50.0% |
| Q2 2020 | $586,000 | +1731.2% | 9,606 | +1278.2% | 0.03% | +1500.0% |
| Q1 2020 | $32,000 | -73.1% | 697 | -48.6% | 0.00% | -60.0% |
| Q4 2019 | $119,000 | -62.6% | 1,355 | -45.8% | 0.01% | -68.8% |
| Q2 2019 | $318,000 | -3.9% | 2,500 | +18.9% | 0.02% | -15.8% |
| Q1 2019 | $331,000 | +1847.1% | 2,103 | +1794.6% | 0.02% | +1800.0% |
| Q2 2018 | $17,000 | -90.3% | 111 | -91.3% | 0.00% | -93.8% |
| Q3 2017 | $175,000 | -39.9% | 1,277 | -62.5% | 0.02% | -61.9% |
| Q3 2015 | $291,000 | -74.6% | 3,402 | -50.0% | 0.04% | -73.8% |
| Q2 2015 | $1,145,000 | +149.5% | 6,802 | +78.9% | 0.16% | +150.0% |
| Q1 2015 | $459,000 | +398.9% | 3,802 | +280.2% | 0.06% | +392.3% |
| Q4 2014 | $92,000 | – | 1,000 | – | 0.01% | – |
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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% |