BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 166 filers reported holding BLUEBIRD BIO INC in Q3 2023. The put-call ratio across all filers is 0.94 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2021 | $5,064 | -40.2% | 265 | 0.0% | 0.00% | – |
| Q2 2021 | $8,475 | +6.1% | 265 | 0.0% | 0.00% | – |
| Q1 2021 | $7,990 | -30.3% | 265 | 0.0% | 0.00% | -100.0% |
| Q4 2020 | $11,467 | -19.8% | 265 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $14,297 | +260.3% | 265 | +307.7% | 0.00% | – |
| Q2 2020 | $3,968 | +32.8% | 65 | 0.0% | 0.00% | – |
| Q1 2020 | $2,987 | -47.6% | 65 | 0.0% | 0.00% | -100.0% |
| Q4 2019 | $5,704 | -4.4% | 65 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $5,968 | -27.8% | 65 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $8,268 | -19.1% | 65 | 0.0% | 0.00% | 0.0% |
| Q1 2019 | $10,226 | +58.6% | 65 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $6,448 | -32.1% | 65 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $9,490 | -7.0% | 65 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $10,202 | -8.1% | 65 | 0.0% | 0.00% | 0.0% |
| Q1 2018 | $11,099 | – | 65 | – | 0.00% | – |
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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% |