BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 211 filers reported holding BLUEBIRD BIO INC in Q4 2016. The put-call ratio across all filers is 0.81 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2016 | $2,863,000 | -67.2% | 46,394 | -63.9% | 0.00% | -66.7% |
| Q3 2016 | $8,718,000 | +1057.8% | 128,615 | +639.0% | 0.01% | +800.0% |
| Q2 2016 | $753,000 | +2.6% | 17,403 | +0.8% | 0.00% | 0.0% |
| Q1 2016 | $734,000 | -35.2% | 17,269 | -2.0% | 0.00% | 0.0% |
| Q4 2015 | $1,132,000 | +60.8% | 17,624 | +114.2% | 0.00% | 0.0% |
| Q3 2015 | $704,000 | -92.0% | 8,226 | -84.2% | 0.00% | -88.9% |
| Q2 2015 | $8,780,000 | -6.0% | 52,150 | -32.5% | 0.01% | -10.0% |
| Q1 2015 | $9,337,000 | +52.1% | 77,312 | +15.6% | 0.01% | +66.7% |
| Q4 2014 | $6,137,000 | +189.1% | 66,903 | +13.1% | 0.01% | +200.0% |
| Q3 2014 | $2,123,000 | -9.2% | 59,179 | -2.3% | 0.00% | 0.0% |
| Q2 2014 | $2,337,000 | -40.6% | 60,589 | -65.0% | 0.00% | -50.0% |
| Q1 2014 | $3,933,000 | +13.5% | 172,947 | +4.7% | 0.00% | +33.3% |
| Q4 2013 | $3,466,000 | -23.6% | 165,202 | -1.8% | 0.00% | -40.0% |
| Q3 2013 | $4,535,000 | – | 168,241 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 5,910,687 | $24,470,000 | 3.71% |
| Monaco Asset Management SAM | 306,142 | $1,267,000 | 0.55% |
| Parametrica Management Ltd | 90,105 | $374,000 | 0.41% |
| Kamunting Street Capital Management, L.P. | 55,200 | $229,000 | 0.31% |
| Birchview Capital, LP | 98,000 | $406,000 | 0.30% |
| Kamunting Street Capital Management, L.P. | 35,000 | $145,000 | 0.20% |
| PDT Partners, LLC | 519,477 | $2,151,000 | 0.19% |
| Graham Capital Management, L.P. | 781,912 | $3,237,000 | 0.13% |
| CAXTON ASSOCIATES LP | 220,154 | $911,000 | 0.09% |
| Baker Brothers Advisors | 2,499,715 | $10,349,000 | 0.06% |