BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 238 filers reported holding BLUEBIRD BIO INC in Q1 2021. The put-call ratio across all filers is 1.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $505,715 | -7.3% | 166,358 | +0.3% | 0.00% | 0.0% |
| Q2 2023 | $545,580 | +104417.2% | 165,830 | +1.0% | 0.00% | 0.0% |
| Q1 2023 | $522 | -41.7% | 164,250 | +26.9% | 0.00% | 0.0% |
| Q4 2022 | $896 | -99.9% | 129,431 | +6.2% | 0.00% | 0.0% |
| Q3 2022 | $771,000 | +75.2% | 121,870 | +14.7% | 0.00% | 0.0% |
| Q2 2022 | $440,000 | +0.9% | 106,287 | +18.3% | 0.00% | 0.0% |
| Q1 2022 | $436,000 | -55.2% | 89,848 | -7.8% | 0.00% | 0.0% |
| Q4 2021 | $974,000 | -48.2% | 97,489 | -1.0% | 0.00% | -66.7% |
| Q3 2021 | $1,882,000 | -39.7% | 98,506 | +0.9% | 0.00% | -25.0% |
| Q2 2021 | $3,123,000 | +44.2% | 97,648 | +36.0% | 0.00% | +33.3% |
| Q1 2021 | $2,165,000 | -33.2% | 71,810 | -4.1% | 0.00% | -25.0% |
| Q4 2020 | $3,239,000 | -23.9% | 74,855 | -5.1% | 0.00% | -42.9% |
| Q3 2020 | $4,255,000 | -9.4% | 78,870 | +2.5% | 0.01% | -12.5% |
| Q2 2020 | $4,696,000 | +65.2% | 76,933 | +24.4% | 0.01% | +33.3% |
| Q1 2020 | $2,842,000 | -33.3% | 61,835 | +27.4% | 0.01% | -14.3% |
| Q4 2019 | $4,258,000 | -1.7% | 48,523 | +2.8% | 0.01% | -12.5% |
| Q3 2019 | $4,333,000 | -27.2% | 47,194 | +0.9% | 0.01% | -27.3% |
| Q2 2019 | $5,952,000 | -30.3% | 46,795 | -13.8% | 0.01% | -35.3% |
| Q1 2019 | $8,545,000 | +54.7% | 54,313 | -2.5% | 0.02% | +41.7% |
| Q4 2018 | $5,525,000 | -32.9% | 55,691 | -1.3% | 0.01% | -25.0% |
| Q3 2018 | $8,237,000 | -2.1% | 56,415 | +5.2% | 0.02% | -5.9% |
| Q2 2018 | $8,414,000 | -5.0% | 53,609 | +3.3% | 0.02% | -10.5% |
| Q1 2018 | $8,859,000 | -7.0% | 51,882 | -3.0% | 0.02% | 0.0% |
| Q4 2017 | $9,524,000 | +13.4% | 53,473 | -12.6% | 0.02% | +5.6% |
| Q3 2017 | $8,399,000 | +50.6% | 61,149 | +15.2% | 0.02% | +38.5% |
| Q2 2017 | $5,576,000 | +14.1% | 53,082 | -1.3% | 0.01% | +18.2% |
| Q1 2017 | $4,889,000 | +61.5% | 53,780 | +9.6% | 0.01% | +37.5% |
| Q4 2016 | $3,027,000 | -5.8% | 49,058 | +3.5% | 0.01% | -11.1% |
| Q3 2016 | $3,214,000 | +63.6% | 47,412 | +4.4% | 0.01% | +50.0% |
| Q2 2016 | $1,965,000 | +30.7% | 45,401 | +28.4% | 0.01% | +20.0% |
| Q1 2016 | $1,503,000 | -34.7% | 35,365 | -1.4% | 0.01% | -28.6% |
| Q4 2015 | $2,303,000 | -20.4% | 35,855 | +6.0% | 0.01% | -30.0% |
| Q3 2015 | $2,894,000 | -46.1% | 33,832 | +6.1% | 0.01% | -41.2% |
| Q2 2015 | $5,368,000 | +70.5% | 31,882 | +22.3% | 0.02% | +88.9% |
| Q1 2015 | $3,149,000 | +87.3% | 26,075 | +42.3% | 0.01% | +80.0% |
| Q4 2014 | $1,681,000 | +177.9% | 18,330 | +8.6% | 0.01% | +150.0% |
| Q3 2014 | $605,000 | -2.4% | 16,875 | +4.9% | 0.00% | 0.0% |
| Q2 2014 | $620,000 | – | 16,080 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Monashee Investment Management LLC | 125,000 | $13,131,000 | 5.55% |
| Cormorant Asset Management, LP | 275,000 | $28,889,000 | 4.79% |
| Eventide Asset Management | 569,700 | $59,847,000 | 3.73% |
| Crosspoint Capital Strategies, LLC | 28,937 | $3,040,000 | 2.66% |
| Casdin Capital, LLC | 65,000 | $6,828,000 | 2.53% |
| ARK Investment Management | 119,683 | $12,573,000 | 2.45% |
| RTW INVESTMENTS, LP | 104,383 | $10,965,000 | 2.31% |
| Taylor Wealth Management Partners | 38,368 | $4,031,000 | 1.82% |
| First Light Asset Management, LLC | 33,780 | $3,549,000 | 1.19% |
| Atika Capital Management LLC | 25,000 | $2,627,000 | 0.92% |