BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 272 filers reported holding BLUEBIRD BIO INC in Q4 2020. The put-call ratio across all filers is 1.17 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $17,054 | -7.6% | 5,610 | 0.0% | 0.00% | 0.0% |
| Q2 2023 | $18,457 | +3.5% | 5,610 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $17,840 | -49.9% | 5,610 | +9.1% | 0.00% | -50.0% |
| Q4 2022 | $35,596 | +20.4% | 5,144 | +10.1% | 0.00% | +100.0% |
| Q3 2022 | $29,567 | +270.6% | 4,671 | +142.4% | 0.00% | – |
| Q2 2022 | $7,978 | -63.5% | 1,927 | -57.3% | 0.00% | -100.0% |
| Q1 2022 | $21,869 | -87.9% | 4,509 | -75.0% | 0.00% | -50.0% |
| Q4 2021 | $180,519 | -49.6% | 18,070 | -3.6% | 0.00% | -60.0% |
| Q3 2021 | $358,389 | -40.2% | 18,754 | 0.0% | 0.01% | -37.5% |
| Q2 2021 | $599,753 | +588.1% | 18,754 | +548.7% | 0.01% | +700.0% |
| Q1 2021 | $87,164 | -31.9% | 2,891 | -2.3% | 0.00% | -50.0% |
| Q4 2020 | $128,036 | -21.5% | 2,959 | -2.2% | 0.00% | -33.3% |
| Q3 2020 | $163,199 | -11.6% | 3,025 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $184,646 | +200.9% | 3,025 | +126.6% | 0.00% | +200.0% |
| Q1 2020 | $61,357 | -47.6% | 1,335 | 0.0% | 0.00% | -50.0% |
| Q4 2019 | $117,146 | -4.1% | 1,335 | +0.3% | 0.00% | 0.0% |
| Q3 2019 | $122,212 | -69.5% | 1,331 | -57.8% | 0.00% | -71.4% |
| Q2 2019 | $401,062 | -20.8% | 3,153 | -2.0% | 0.01% | -22.2% |
| Q1 2019 | $506,131 | +55.5% | 3,217 | -2.0% | 0.01% | +28.6% |
| Q4 2018 | $325,475 | -32.2% | 3,281 | -0.2% | 0.01% | -22.2% |
| Q3 2018 | $480,048 | -99.9% | 3,288 | +4.8% | 0.01% | +12.5% |
| Q2 2018 | $492,194,000 | -81.2% | 3,136 | -79.5% | 0.01% | -78.4% |
| Q1 2018 | $2,615,207,000 | +99224.2% | 15,316 | +3.6% | 0.04% | +5.7% |
| Q4 2017 | $2,633,000 | -37.2% | 14,782 | -51.6% | 0.04% | +34.6% |
| Q3 2017 | $4,192,000 | +42.1% | 30,518 | +8.6% | 0.03% | +30.0% |
| Q2 2017 | $2,951,000 | +15.6% | 28,090 | 0.0% | 0.02% | +11.1% |
| Q1 2017 | $2,553,000 | +45.1% | 28,090 | -1.5% | 0.02% | +38.5% |
| Q4 2016 | $1,759,000 | -2.0% | 28,505 | +7.6% | 0.01% | 0.0% |
| Q3 2016 | $1,795,000 | +53.3% | 26,488 | -2.0% | 0.01% | +44.4% |
| Q2 2016 | $1,171,000 | +927.2% | 27,042 | +908.7% | 0.01% | +800.0% |
| Q1 2016 | $114,000 | -33.7% | 2,681 | 0.0% | 0.00% | 0.0% |
| Q4 2015 | $172,000 | -22.9% | 2,681 | +2.7% | 0.00% | -50.0% |
| Q3 2015 | $223,000 | -44.7% | 2,610 | +9.0% | 0.00% | -33.3% |
| Q2 2015 | $403,000 | -82.5% | 2,395 | -87.4% | 0.00% | -82.4% |
| Q1 2015 | $2,298,000 | +45.2% | 19,027 | +10.2% | 0.02% | +54.5% |
| Q4 2014 | $1,583,000 | +155.7% | 17,261 | 0.0% | 0.01% | +175.0% |
| Q3 2014 | $619,000 | +7.5% | 17,261 | +15.6% | 0.00% | 0.0% |
| Q2 2014 | $576,000 | +164.2% | 14,927 | +84.6% | 0.00% | +100.0% |
| Q3 2013 | $218,000 | – | 8,086 | – | 0.00% | – |
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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% |