BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 303 filers reported holding BLUEBIRD BIO INC in Q4 2017. The put-call ratio across all filers is 0.85 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2018 | $6,703,000 | +22.4% | 42,705 | +33.1% | 0.47% | +20.2% |
| Q1 2018 | $5,477,000 | -72.9% | 32,076 | -71.7% | 0.39% | -41.1% |
| Q4 2017 | $20,184,000 | +106.0% | 113,324 | +58.9% | 0.67% | -1.6% |
| Q3 2017 | $9,797,000 | +85.8% | 71,329 | +42.1% | 0.68% | +81.5% |
| Q2 2017 | $5,273,000 | +57.2% | 50,183 | +36.1% | 0.37% | +58.1% |
| Q1 2017 | $3,354,000 | +2.1% | 36,873 | -30.7% | 0.24% | -5.2% |
| Q4 2016 | $3,284,000 | -2.8% | 53,187 | +6.7% | 0.25% | +10.7% |
| Q3 2016 | $3,379,000 | +558.7% | 49,855 | +312.9% | 0.22% | +508.1% |
| Q1 2016 | $513,000 | -56.4% | 12,075 | -34.1% | 0.04% | -54.3% |
| Q4 2015 | $1,177,000 | -55.0% | 18,329 | -40.1% | 0.08% | -56.9% |
| Q3 2015 | $2,617,000 | -71.6% | 30,587 | -44.1% | 0.19% | -68.1% |
| Q2 2015 | $9,219,000 | +90.8% | 54,755 | +36.8% | 0.59% | +95.4% |
| Q1 2015 | $4,833,000 | +167.2% | 40,020 | +102.9% | 0.30% | +167.3% |
| Q4 2014 | $1,809,000 | – | 19,727 | – | 0.11% | – |
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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% |