BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 303 filers reported holding BLUEBIRD BIO INC in Q4 2017. The put-call ratio across all filers is 0.85 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $478,000 | -7.7% | 157,338 | 0.0% | 0.00% | 0.0% |
| Q2 2023 | $518,000 | +137.6% | 157,338 | +129.7% | 0.00% | +100.0% |
| Q1 2023 | $218,000 | -54.0% | 68,504 | 0.0% | 0.00% | -50.0% |
| Q4 2022 | $474,000 | +6671.4% | 68,504 | +6082.7% | 0.00% | – |
| Q3 2022 | $7,000 | +40.0% | 1,108 | 0.0% | 0.00% | – |
| Q2 2022 | $5,000 | -50.0% | 1,108 | -47.4% | 0.00% | – |
| Q1 2022 | $10,000 | -52.4% | 2,108 | 0.0% | 0.00% | – |
| Q4 2021 | $21,000 | -91.6% | 2,108 | -83.9% | 0.00% | -100.0% |
| Q3 2021 | $250,000 | -87.3% | 13,088 | -78.7% | 0.00% | -85.7% |
| Q2 2021 | $1,966,000 | +69.8% | 61,488 | +60.1% | 0.01% | +40.0% |
| Q1 2021 | $1,158,000 | -17.6% | 38,397 | +18.2% | 0.01% | -16.7% |
| Q4 2020 | $1,406,000 | -7.6% | 32,490 | +15.1% | 0.01% | -25.0% |
| Q3 2020 | $1,522,000 | +1.2% | 28,218 | +14.5% | 0.01% | -11.1% |
| Q2 2020 | $1,504,000 | +47.5% | 24,647 | +11.1% | 0.01% | +28.6% |
| Q1 2020 | $1,020,000 | -38.5% | 22,191 | +17.4% | 0.01% | -22.2% |
| Q4 2019 | $1,659,000 | -5.8% | 18,904 | -1.5% | 0.01% | 0.0% |
| Q3 2019 | $1,762,000 | -27.6% | 19,185 | +0.3% | 0.01% | -30.8% |
| Q2 2019 | $2,433,000 | -23.3% | 19,130 | -5.1% | 0.01% | -23.5% |
| Q1 2019 | $3,173,000 | +59.0% | 20,165 | +0.2% | 0.02% | +41.7% |
| Q4 2018 | $1,996,000 | -35.1% | 20,126 | -4.4% | 0.01% | -20.0% |
| Q3 2018 | $3,074,000 | -38.0% | 21,057 | -33.4% | 0.02% | -40.0% |
| Q2 2018 | $4,960,000 | +235.4% | 31,600 | +264.9% | 0.02% | +212.5% |
| Q1 2018 | $1,479,000 | -47.7% | 8,661 | -45.4% | 0.01% | -42.9% |
| Q4 2017 | $2,826,000 | +3.7% | 15,869 | -20.0% | 0.01% | 0.0% |
| Q3 2017 | $2,725,000 | +392.8% | 19,837 | +52.5% | 0.01% | +250.0% |
| Q1 2016 | $553,000 | -50.1% | 13,011 | -24.6% | 0.00% | -42.9% |
| Q4 2015 | $1,108,000 | -25.5% | 17,256 | -0.8% | 0.01% | -22.2% |
| Q3 2015 | $1,488,000 | -63.4% | 17,390 | -28.0% | 0.01% | -60.9% |
| Q2 2015 | $4,067,000 | – | 24,153 | – | 0.02% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Third Rock Ventures, LLC | 3,313,974 | $78,939,000 | 22.36% |
| HARBOURVEST PARTNERS LLC | 59,264 | $1,243,000 | 3.98% |
| RA Capital Management | 467,418 | $9,806,000 | 1.14% |
| HAMILTON LANE ADVISORS LLC | 88,628 | $1,859,000 | 1.08% |
| COWEN INC. | 158,709 | $3,330,000 | 0.56% |
| SPHERA FUNDS MANAGEMENT LTD. | 92,435 | $1,939,000 | 0.54% |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 423,224 | $8,879,000 | 0.46% |
| Camber Capital Management LP | 206,900 | $4,341,000 | 0.38% |
| Eventide Asset Management | 25,700 | $539,000 | 0.17% |
| SABBY MANAGEMENT, LLC | 102,035 | $2,141,000 | 0.14% |