BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 252 filers reported holding BLUEBIRD BIO INC in Q1 2020. The put-call ratio across all filers is 1.33 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $281,000 | -89.6% | 9,330 | -69.8% | 0.00% | -87.5% |
| Q4 2019 | $2,711,000 | +244.5% | 30,894 | +414.9% | 0.01% | +166.7% |
| Q1 2019 | $787,000 | +52.2% | 6,000 | +15.0% | 0.00% | +50.0% |
| Q4 2018 | $517,000 | +33.2% | 5,216 | +96.4% | 0.00% | +100.0% |
| Q3 2018 | $388,000 | +1.8% | 2,656 | +9.5% | 0.00% | 0.0% |
| Q2 2018 | $381,000 | +18.0% | 2,425 | +33.5% | 0.00% | 0.0% |
| Q4 2017 | $323,000 | +330.7% | 1,816 | +154.3% | 0.00% | – |
| Q2 2017 | $75,000 | -98.3% | 714 | -98.5% | 0.00% | -100.0% |
| Q1 2017 | $4,358,000 | +47.4% | 47,945 | +0.1% | 0.02% | +33.3% |
| Q4 2016 | $2,956,000 | +74.2% | 47,911 | +60.8% | 0.02% | +63.6% |
| Q3 2016 | $1,697,000 | +51.9% | 29,801 | +15.1% | 0.01% | +37.5% |
| Q2 2016 | $1,117,000 | -0.6% | 25,901 | -2.6% | 0.01% | -11.1% |
| Q1 2016 | $1,124,000 | -20.3% | 26,601 | +21.1% | 0.01% | -25.0% |
| Q4 2015 | $1,411,000 | +153.8% | 21,975 | +238.1% | 0.01% | +140.0% |
| Q3 2015 | $556,000 | +2427.3% | 6,500 | +3511.1% | 0.01% | – |
| Q1 2015 | $22,000 | +266.7% | 180 | +157.1% | 0.00% | – |
| Q4 2014 | $6,000 | – | 70 | – | 0.00% | – |
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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% |