ATARA BIOTHERAPEUTICS INC's ticker is ATRA and the CUSIP is 046513107. A total of 85 filers reported holding ATARA BIOTHERAPEUTICS INC in Q4 2015. The put-call ratio across all filers is 2.24 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $72 | -10.0% | 24,844 | +1.7% | 0.00% | -100.0% |
| Q4 2022 | $80 | -99.9% | 24,422 | -5.5% | 0.00% | 0.0% |
| Q3 2022 | $98,000 | +4.3% | 25,843 | +113.7% | 0.00% | 0.0% |
| Q2 2022 | $94,000 | -34.7% | 12,095 | -21.7% | 0.00% | 0.0% |
| Q1 2022 | $144,000 | -33.3% | 15,447 | +12.6% | 0.00% | 0.0% |
| Q4 2021 | $216,000 | +5.4% | 13,719 | +19.8% | 0.00% | 0.0% |
| Q3 2021 | $205,000 | -8.9% | 11,451 | +87.4% | 0.00% | 0.0% |
| Q2 2018 | $225,000 | -13.5% | 6,110 | -8.4% | 0.00% | -50.0% |
| Q1 2018 | $260,000 | +381.5% | 6,668 | +178.9% | 0.00% | – |
| Q2 2016 | $54,000 | +35.0% | 2,391 | +14.3% | 0.00% | – |
| Q1 2016 | $40,000 | -4.8% | 2,092 | +32.1% | 0.00% | – |
| Q4 2015 | $42,000 | -35.4% | 1,584 | -22.9% | 0.00% | -100.0% |
| Q3 2015 | $65,000 | +160.0% | 2,055 | +337.2% | 0.00% | – |
| Q2 2015 | $25,000 | – | 470 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 1,063,189 | $56,094,000 | 18.70% |
| Baupost Group | 4,809,632 | $253,756,000 | 4.23% |
| Ghost Tree Capital, LLC | 100,000 | $5,276,000 | 1.71% |
| Redmile Group, LLC | 372,642 | $19,661,000 | 1.61% |
| BRIDGER MANAGEMENT, LLC | 501,297 | $26,448,000 | 0.84% |
| Visium Asset Management, LP | 904,514 | $47,722,000 | 0.68% |
| Cupps Capital Management, LLC | 78,660 | $4,150,000 | 0.40% |
| Cormorant Asset Management, LP | 50,000 | $2,638,000 | 0.35% |
| TIVERTON ASSET MANAGEMENT LLC | 225,113 | $11,877,000 | 0.24% |
| ArrowMark Colorado Holdings LLC | 123,668 | $6,525,000 | 0.16% |