BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 283 filers reported holding BLUEBIRD BIO INC in Q4 2019. The put-call ratio across all filers is 0.80 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2019 | $930,000 | +44.2% | 10,600 | +158.5% | 0.02% | +30.8% |
| Q1 2019 | $645,000 | -95.8% | 4,100 | -97.6% | 0.01% | -91.9% |
| Q1 2017 | $15,304,000 | +122.5% | 168,362 | +124.5% | 0.16% | +36.8% |
| Q4 2014 | $6,879,000 | +47.5% | 75,000 | -42.3% | 0.12% | +37.6% |
| Q3 2014 | $4,664,000 | -56.0% | 130,000 | -52.7% | 0.08% | -36.1% |
| Q2 2014 | $10,607,000 | +405.6% | 275,000 | +175.0% | 0.13% | +392.6% |
| Q4 2013 | $2,098,000 | -61.1% | 100,000 | -50.0% | 0.03% | -70.7% |
| Q3 2013 | $5,392,000 | – | 200,000 | – | 0.09% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Casdin Capital, LLC | 82,500 | $5,090,000 | 4.20% |
| RTW INVESTMENTS, LP | 122,576 | $7,563,000 | 2.85% |
| Eventide Asset Management | 587,677 | $36,260,000 | 2.36% |
| First Light Asset Management, LLC | 71,246 | $4,396,000 | 1.93% |
| ARK Investment Management | 75,645 | $4,667,000 | 1.70% |
| Taylor Wealth Management Partners | 39,118 | $2,414,000 | 1.12% |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 302,027 | $18,635,000 | 0.77% |
| ARMISTICE CAPITAL, LLC | 40,000 | $2,468,000 | 0.58% |
| Artal Group S.A. | 422,536 | $26,070,000 | 0.58% |
| Baillie Gifford | 5,164,467 | $318,647,000 | 0.52% |