BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 179 filers reported holding BLUEBIRD BIO INC in Q2 2016. The put-call ratio across all filers is 1.01 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2018 | $236,000 | -33.9% | 2,381 | -2.5% | 0.00% | -40.0% |
| Q3 2018 | $357,000 | +8.5% | 2,442 | +16.4% | 0.01% | 0.0% |
| Q2 2018 | $329,000 | -8.1% | 2,098 | 0.0% | 0.01% | 0.0% |
| Q1 2018 | $358,000 | -7.0% | 2,098 | -3.0% | 0.01% | -16.7% |
| Q4 2017 | $385,000 | +13.2% | 2,162 | -12.6% | 0.01% | +20.0% |
| Q3 2017 | $340,000 | +53.8% | 2,474 | +17.8% | 0.01% | +66.7% |
| Q2 2017 | $221,000 | -0.9% | 2,100 | -14.6% | 0.00% | -25.0% |
| Q1 2017 | $223,000 | +12.1% | 2,458 | -23.8% | 0.00% | 0.0% |
| Q4 2016 | $199,000 | -63.3% | 3,225 | -59.7% | 0.00% | -60.0% |
| Q3 2016 | $542,000 | +95.7% | 8,000 | +25.0% | 0.01% | +100.0% |
| Q2 2016 | $277,000 | +30.7% | 6,400 | +28.0% | 0.01% | +25.0% |
| Q1 2016 | $212,000 | -34.0% | 5,000 | 0.0% | 0.00% | -33.3% |
| Q4 2015 | $321,000 | – | 5,000 | – | 0.01% | – |
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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% |