BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 177 filers reported holding BLUEBIRD BIO INC in Q4 2021. The put-call ratio across all filers is 1.00 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $65,244 | -14.4% | 21,462 | -7.3% | 0.00% | -33.3% |
| Q2 2023 | $76,197 | +118957.8% | 23,160 | +15.5% | 0.00% | +50.0% |
| Q1 2023 | $64 | -82.3% | 20,056 | -61.6% | 0.00% | -86.7% |
| Q4 2022 | $361 | -99.9% | 52,177 | -1.6% | 0.02% | +200.0% |
| Q3 2022 | $336,000 | +205.5% | 53,040 | +100.4% | 0.01% | +150.0% |
| Q2 2022 | $110,000 | +89.7% | 26,461 | +121.3% | 0.00% | +100.0% |
| Q1 2022 | $58,000 | -63.5% | 11,956 | -25.0% | 0.00% | -66.7% |
| Q4 2021 | $159,000 | -30.9% | 15,947 | +32.7% | 0.00% | -50.0% |
| Q3 2021 | $230,000 | +115.0% | 12,016 | +260.6% | 0.01% | +100.0% |
| Q2 2021 | $107,000 | -81.3% | 3,332 | -82.5% | 0.00% | -70.0% |
| Q1 2021 | $573,000 | -19.6% | 19,016 | +15.5% | 0.01% | -54.5% |
| Q4 2020 | $713,000 | +236.3% | 16,468 | +319.9% | 0.02% | +1000.0% |
| Q3 2020 | $212,000 | +7.6% | 3,922 | +22.0% | 0.00% | -75.0% |
| Q2 2020 | $197,000 | +6466.7% | 3,214 | +5441.4% | 0.01% | – |
| Q1 2020 | $3,000 | -93.6% | 58 | -89.3% | 0.00% | -100.0% |
| Q4 2019 | $47,000 | -54.4% | 540 | -33.3% | 0.00% | -42.9% |
| Q2 2019 | $103,000 | +51.5% | 810 | +87.1% | 0.01% | +75.0% |
| Q1 2019 | $68,000 | +6700.0% | 433 | +6085.7% | 0.00% | – |
| Q4 2018 | $1,000 | -92.9% | 7 | -92.6% | 0.00% | -100.0% |
| Q3 2018 | $14,000 | -93.0% | 95 | -92.6% | 0.00% | -90.9% |
| Q2 2018 | $201,000 | -60.1% | 1,280 | -65.1% | 0.01% | -73.8% |
| Q3 2017 | $504,000 | +130.1% | 3,667 | +3.5% | 0.04% | +75.0% |
| Q4 2016 | $219,000 | +2333.3% | 3,543 | +2448.9% | 0.02% | +2300.0% |
| Q3 2016 | $9,000 | +50.0% | 139 | +39.0% | 0.00% | 0.0% |
| Q4 2015 | $6,000 | -96.2% | 100 | -94.6% | 0.00% | -93.3% |
| Q3 2015 | $159,000 | -20.9% | 1,857 | +55.3% | 0.02% | -16.7% |
| Q2 2015 | $201,000 | +74.8% | 1,196 | +25.8% | 0.02% | +28.6% |
| Q1 2015 | $115,000 | +576.5% | 951 | +422.5% | 0.01% | +600.0% |
| Q4 2014 | $17,000 | +41.7% | 182 | -41.9% | 0.00% | 0.0% |
| Q2 2014 | $12,000 | -20.0% | 313 | -52.0% | 0.00% | 0.0% |
| Q1 2014 | $15,000 | -37.5% | 652 | -42.0% | 0.00% | -50.0% |
| Q4 2013 | $24,000 | +242.9% | 1,124 | +311.7% | 0.00% | +300.0% |
| Q3 2013 | $7,000 | – | 273 | – | 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% |