BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 281 filers reported holding BLUEBIRD BIO INC in Q2 2020. The put-call ratio across all filers is 1.27 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $258,000 | -26.5% | 5,955 | -8.4% | 0.00% | -42.9% |
| Q3 2020 | $351,000 | -10.9% | 6,501 | +0.6% | 0.01% | -12.5% |
| Q2 2020 | $394,000 | +36.8% | 6,462 | +3.0% | 0.01% | +14.3% |
| Q1 2020 | $288,000 | -27.1% | 6,271 | +39.4% | 0.01% | -12.5% |
| Q4 2019 | $395,000 | -15.6% | 4,499 | -11.8% | 0.01% | -20.0% |
| Q3 2019 | $468,000 | -18.2% | 5,101 | +13.5% | 0.01% | -23.1% |
| Q2 2019 | $572,000 | +2.7% | 4,494 | +27.1% | 0.01% | 0.0% |
| Q1 2019 | $557,000 | +34.9% | 3,537 | -15.1% | 0.01% | +30.0% |
| Q4 2018 | $413,000 | +41200.0% | 4,164 | +46166.7% | 0.01% | – |
| Q3 2017 | $1,000 | 0.0% | 9 | 0.0% | 0.00% | – |
| Q2 2017 | $1,000 | 0.0% | 9 | -40.0% | 0.00% | – |
| Q1 2017 | $1,000 | – | 15 | – | 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% |