BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 212 filers reported holding BLUEBIRD BIO INC in Q1 2015. The put-call ratio across all filers is 1.10 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2019 | $12,016,000 | -41.6% | 130,864 | -19.1% | 0.03% | -55.7% |
| Q2 2019 | $20,581,000 | -12.7% | 161,798 | +8.0% | 0.07% | -19.5% |
| Q1 2019 | $23,577,000 | +57.9% | 149,860 | -0.5% | 0.09% | +40.3% |
| Q4 2018 | $14,935,000 | -33.6% | 150,550 | -2.3% | 0.06% | -22.5% |
| Q3 2018 | $22,500,000 | -4.8% | 154,110 | +2.3% | 0.08% | +100.0% |
| Q2 2018 | $23,634,000 | -14.3% | 150,580 | -6.8% | 0.04% | -18.4% |
| Q1 2018 | $27,593,000 | -8.4% | 161,600 | -4.4% | 0.05% | -5.8% |
| Q4 2017 | $30,115,000 | +26.3% | 169,090 | -2.6% | 0.05% | +18.2% |
| Q3 2017 | $23,836,000 | +55.4% | 173,540 | +18.9% | 0.04% | +46.7% |
| Q2 2017 | $15,335,000 | +11.9% | 145,980 | -3.2% | 0.03% | +11.1% |
| Q1 2017 | $13,710,000 | +41.4% | 150,830 | -4.1% | 0.03% | +35.0% |
| Q4 2016 | $9,699,000 | -7.5% | 157,200 | +1.6% | 0.02% | -9.1% |
| Q3 2016 | $10,483,000 | +51.8% | 154,660 | -3.1% | 0.02% | +46.7% |
| Q2 2016 | $6,907,000 | -0.8% | 159,560 | -2.6% | 0.02% | -6.2% |
| Q1 2016 | $6,964,000 | -33.8% | 163,860 | +0.0% | 0.02% | -33.3% |
| Q4 2015 | $10,522,000 | -25.7% | 163,850 | -1.0% | 0.02% | -31.4% |
| Q3 2015 | $14,162,000 | -32.2% | 165,540 | +33.4% | 0.04% | -27.1% |
| Q2 2015 | $20,891,000 | +40.1% | 124,080 | +0.5% | 0.05% | +37.1% |
| Q1 2015 | $14,915,000 | – | 123,500 | – | 0.04% | – |
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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% |