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 2021 | $214,000 | -31.6% | 11,200 | +14.3% | 0.01% | -36.4% |
| Q2 2021 | $313,000 | -4.9% | 9,800 | +60.7% | 0.01% | -35.3% |
| Q3 2020 | $329,000 | -11.6% | 6,100 | 0.0% | 0.02% | -19.0% |
| Q2 2020 | $372,000 | +32.9% | 6,100 | 0.0% | 0.02% | +5.0% |
| Q1 2020 | $280,000 | -47.7% | 6,100 | 0.0% | 0.02% | -33.3% |
| Q4 2019 | $535,000 | +110.6% | 6,100 | +205.0% | 0.03% | +87.5% |
| Q2 2019 | $254,000 | -19.4% | 2,000 | 0.0% | 0.02% | -20.0% |
| Q1 2019 | $315,000 | +7.9% | 2,000 | 0.0% | 0.02% | +17.6% |
| Q3 2018 | $292,000 | -7.0% | 2,000 | 0.0% | 0.02% | -10.5% |
| Q2 2018 | $314,000 | -8.2% | 2,000 | 0.0% | 0.02% | -13.6% |
| Q1 2018 | $342,000 | -23.1% | 2,000 | -20.0% | 0.02% | -21.4% |
| Q4 2017 | $445,000 | +38.6% | 2,500 | -50.0% | 0.03% | -80.3% |
| Q4 2015 | $321,000 | – | 5,000 | – | 0.14% | – |
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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% |