BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 184 filers reported holding BLUEBIRD BIO INC in Q4 2022. The put-call ratio across all filers is 0.63 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $0 | – | 13 | 0.0% | 0.00% | – |
| Q3 2022 | $0 | – | 13 | -84.1% | 0.00% | – |
| Q2 2022 | $0 | -100.0% | 82 | -95.4% | 0.00% | – |
| Q3 2021 | $33,000 | -38.9% | 1,775 | +4.7% | 0.00% | – |
| Q2 2021 | $54,000 | +20.0% | 1,695 | +13.4% | 0.00% | – |
| Q1 2021 | $45,000 | -82.4% | 1,495 | -74.8% | 0.00% | -100.0% |
| Q4 2020 | $256,000 | -21.5% | 5,940 | -1.9% | 0.00% | -33.3% |
| Q3 2020 | $326,000 | -51.5% | 6,053 | -45.0% | 0.00% | -57.1% |
| Q2 2020 | $672,000 | +903.0% | 11,010 | +657.2% | 0.01% | +600.0% |
| Q1 2020 | $67,000 | -45.1% | 1,454 | +4.2% | 0.00% | -50.0% |
| Q4 2019 | $122,000 | -4.7% | 1,395 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $128,000 | -27.7% | 1,395 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $177,000 | -19.9% | 1,395 | -0.6% | 0.00% | -33.3% |
| Q1 2019 | $221,000 | +60.1% | 1,403 | +0.6% | 0.00% | +50.0% |
| Q4 2018 | $138,000 | – | 1,395 | – | 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% |