BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 282 filers reported holding BLUEBIRD BIO INC in Q4 2019. The put-call ratio across all filers is 0.80 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $480,000 | +686.9% | 75,631 | +414.5% | 0.00% | +300.0% |
| Q2 2022 | $61,000 | -93.9% | 14,700 | -92.8% | 0.00% | -88.9% |
| Q1 2022 | $993,000 | +794.6% | 204,700 | +1744.1% | 0.01% | +800.0% |
| Q4 2021 | $111,000 | -83.9% | 11,100 | -48.6% | 0.00% | -85.7% |
| Q2 2021 | $691,000 | +222.9% | 21,605 | +204.3% | 0.01% | +133.3% |
| Q1 2021 | $214,000 | -40.1% | 7,101 | +7.3% | 0.00% | -57.1% |
| Q3 2020 | $357,000 | +10.2% | 6,616 | -6.2% | 0.01% | -65.0% |
| Q1 2020 | $324,000 | -75.6% | 7,057 | -53.3% | 0.02% | -37.5% |
| Q4 2019 | $1,326,000 | -35.0% | 15,109 | +16.2% | 0.03% | -71.2% |
| Q2 2018 | $2,041,000 | +63.7% | 13,000 | -54.9% | 0.11% | -60.2% |
| Q2 2016 | $1,247,000 | +237.0% | 28,812 | +231.4% | 0.28% | +84.8% |
| Q1 2016 | $370,000 | – | 8,695 | – | 0.15% | – |
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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% |