BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 303 filers reported holding BLUEBIRD BIO INC in Q4 2017. The put-call ratio across all filers is 0.85 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $623,000 | 0.0% | 14,406 | 0.0% | 0.14% | +0.7% |
| Q4 2020 | $623,000 | +126.5% | 14,406 | +182.1% | 0.14% | +140.7% |
| Q3 2020 | $275,000 | -84.0% | 5,106 | -59.2% | 0.06% | -71.9% |
| Q3 2017 | $1,718,000 | +1490.7% | 12,511 | +393.5% | 0.21% | +356.5% |
| Q1 2016 | $108,000 | -40.0% | 2,535 | +20.7% | 0.05% | -70.7% |
| Q3 2015 | $180,000 | +429.4% | 2,100 | +950.0% | 0.16% | +292.5% |
| Q2 2015 | $34,000 | -29.2% | 200 | -50.0% | 0.04% | -50.0% |
| Q1 2015 | $48,000 | -75.1% | 400 | -81.0% | 0.08% | -75.1% |
| Q4 2014 | $193,000 | – | 2,100 | – | 0.32% | – |
Download | ||||||
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% |