BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 294 filers reported holding BLUEBIRD BIO INC in Q3 2018. The put-call ratio across all filers is 0.85 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $44,000 | -39.7% | 2,290 | 0.0% | 0.00% | -40.0% |
| Q2 2021 | $73,000 | -18.0% | 2,290 | -22.2% | 0.01% | -16.7% |
| Q1 2021 | $89,000 | +85.4% | 2,945 | +166.8% | 0.01% | +50.0% |
| Q4 2020 | $48,000 | +11.6% | 1,104 | +38.0% | 0.00% | 0.0% |
| Q3 2020 | $43,000 | -12.2% | 800 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $49,000 | +32.4% | 800 | 0.0% | 0.00% | +33.3% |
| Q1 2020 | $37,000 | -47.1% | 800 | 0.0% | 0.00% | -50.0% |
| Q4 2019 | $70,000 | -4.1% | 800 | 0.0% | 0.01% | -14.3% |
| Q3 2019 | $73,000 | -28.4% | 800 | 0.0% | 0.01% | -36.4% |
| Q2 2019 | $102,000 | -19.0% | 800 | 0.0% | 0.01% | -26.7% |
| Q1 2019 | $126,000 | +59.5% | 800 | 0.0% | 0.02% | +36.4% |
| Q4 2018 | $79,000 | -32.5% | 800 | 0.0% | 0.01% | -26.7% |
| Q3 2018 | $117,000 | -7.1% | 800 | 0.0% | 0.02% | -11.8% |
| Q2 2018 | $126,000 | -8.0% | 800 | 0.0% | 0.02% | -10.5% |
| Q1 2018 | $137,000 | -3.5% | 800 | 0.0% | 0.02% | -13.6% |
| Q4 2017 | $142,000 | – | 800 | – | 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% |