BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 196 filers reported holding BLUEBIRD BIO INC in Q4 2015. The put-call ratio across all filers is 1.25 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2017 | $8,000 | +14.3% | 75 | 0.0% | 0.01% | 0.0% |
| Q1 2017 | $7,000 | +40.0% | 75 | 0.0% | 0.01% | +25.0% |
| Q4 2016 | $5,000 | 0.0% | 75 | 0.0% | 0.00% | 0.0% |
| Q3 2016 | $5,000 | +66.7% | 75 | 0.0% | 0.00% | +100.0% |
| Q2 2016 | $3,000 | 0.0% | 75 | 0.0% | 0.00% | 0.0% |
| Q1 2016 | $3,000 | -50.0% | 75 | 0.0% | 0.00% | -33.3% |
| Q3 2015 | $6,000 | -71.4% | 75 | -40.0% | 0.00% | -70.0% |
| Q2 2015 | $21,000 | +40.0% | 125 | 0.0% | 0.01% | +42.9% |
| Q1 2015 | $15,000 | +36.4% | 125 | 0.0% | 0.01% | +16.7% |
| Q4 2014 | $11,000 | – | 125 | – | 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% |