BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 197 filers reported holding BLUEBIRD BIO INC in Q3 2021. The put-call ratio across all filers is 1.22 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $1,599,000 | +168.7% | 49,963 | +153.5% | 0.01% | +250.0% |
| Q1 2021 | $595,000 | -51.4% | 19,710 | -30.4% | 0.00% | -66.7% |
| Q4 2020 | $1,224,000 | +203.0% | 28,301 | +328.0% | 0.01% | +100.0% |
| Q2 2020 | $404,000 | -88.2% | 6,612 | -83.1% | 0.00% | -82.4% |
| Q4 2019 | $3,432,000 | +20088.2% | 39,107 | +20701.6% | 0.02% | – |
| Q3 2019 | $17,000 | -100.0% | 188 | -100.0% | 0.00% | -100.0% |
| Q1 2019 | $149,766,000 | +416.5% | 951,924 | +415.2% | 0.53% | +223.8% |
| Q2 2018 | $28,999,000 | -38.7% | 184,763 | -30.4% | 0.16% | -37.2% |
| Q4 2017 | $47,293,000 | +60.4% | 265,541 | +23.4% | 0.26% | +39.6% |
| Q3 2017 | $29,485,000 | -19.4% | 215,220 | -38.2% | 0.19% | -30.0% |
| Q2 2017 | $36,577,000 | +103.1% | 348,351 | +76.1% | 0.27% | +88.0% |
| Q1 2017 | $18,006,000 | +6643.8% | 197,867 | +1451.9% | 0.14% | +2266.7% |
| Q4 2013 | $267,000 | -33.9% | 12,750 | -15.0% | 0.01% | -50.0% |
| Q3 2013 | $404,000 | – | 15,000 | – | 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% |