BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 296 filers reported holding BLUEBIRD BIO INC in Q1 2019. The put-call ratio across all filers is 0.60 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $238,285 | +3.5% | 72,427 | 0.0% | 0.01% | 0.0% |
| Q1 2023 | $230,318 | -76.7% | 72,427 | -49.2% | 0.01% | -78.3% |
| Q4 2022 | $987,048 | +90.5% | 142,637 | +74.4% | 0.02% | +76.9% |
| Q3 2022 | $518,000 | +129.2% | 81,783 | +1469.1% | 0.01% | +62.5% |
| Q4 2020 | $226,000 | -51.3% | 5,212 | -31.5% | 0.01% | -75.0% |
| Q2 2020 | $464,000 | +70.0% | 7,607 | +176.9% | 0.03% | -20.0% |
| Q4 2018 | $273,000 | -52.0% | 2,747 | -67.3% | 0.04% | -67.5% |
| Q3 2016 | $569,000 | +19.5% | 8,400 | -25.0% | 0.12% | -32.4% |
| Q1 2016 | $476,000 | – | 11,200 | – | 0.18% | – |
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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% |