BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 249 filers reported holding BLUEBIRD BIO INC in Q3 2017. The put-call ratio across all filers is 0.94 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2019 | $1,066,000 | -5.3% | 12,150 | -0.9% | 0.49% | -6.8% |
| Q3 2019 | $1,126,000 | -29.9% | 12,266 | -2.9% | 0.53% | -29.7% |
| Q2 2019 | $1,607,000 | -19.0% | 12,634 | +0.2% | 0.75% | -24.0% |
| Q1 2019 | $1,983,000 | +57.9% | 12,606 | -0.5% | 0.99% | +36.1% |
| Q4 2018 | $1,256,000 | -32.5% | 12,666 | -0.6% | 0.72% | -8.3% |
| Q3 2018 | $1,860,000 | -7.1% | 12,741 | -0.1% | 0.79% | -11.1% |
| Q2 2018 | $2,002,000 | -42.4% | 12,758 | -37.3% | 0.89% | -46.8% |
| Q1 2018 | $3,476,000 | -15.1% | 20,356 | -11.5% | 1.67% | -3.9% |
| Q4 2017 | $4,095,000 | +23.8% | 22,993 | -4.6% | 1.74% | +17.9% |
| Q3 2017 | $3,309,000 | -17.9% | 24,093 | -37.2% | 1.48% | -19.1% |
| Q2 2017 | $4,031,000 | +13.9% | 38,368 | -1.5% | 1.82% | +13.9% |
| Q1 2017 | $3,539,000 | +46.6% | 38,938 | -0.5% | 1.60% | +43.4% |
| Q4 2016 | $2,414,000 | +43.0% | 39,118 | +57.0% | 1.12% | +47.6% |
| Q3 2016 | $1,688,000 | +42100.0% | 24,910 | +24810.0% | 0.76% | +37750.0% |
| Q2 2016 | $4,000 | -20.0% | 100 | -20.0% | 0.00% | 0.0% |
| Q1 2016 | $5,000 | -99.8% | 125 | -99.7% | 0.00% | -99.8% |
| Q4 2015 | $2,419,000 | -26.0% | 37,664 | -1.4% | 1.04% | -33.9% |
| Q3 2015 | $3,267,000 | -50.0% | 38,184 | -1.7% | 1.58% | -24.5% |
| Q2 2015 | $6,538,000 | +38.9% | 38,829 | -0.4% | 2.09% | +41.4% |
| Q1 2015 | $4,706,000 | – | 38,967 | – | 1.48% | – |
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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% |