ATARA BIOTHERAPEUTICS INC's ticker is ATRA and the CUSIP is 046513107. A total of 119 filers reported holding ATARA BIOTHERAPEUTICS INC in Q4 2019. The put-call ratio across all filers is 2.38 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $869,000 | +332.3% | 44,221 | +261.7% | 0.00% | +100.0% |
| Q4 2019 | $201,000 | -41.2% | 12,227 | -49.6% | 0.00% | -33.3% |
| Q3 2019 | $342,000 | +52.0% | 24,245 | +116.5% | 0.00% | +50.0% |
| Q2 2019 | $225,000 | -13.8% | 11,200 | +49.3% | 0.00% | 0.0% |
| Q4 2018 | $261,000 | +2510.0% | 7,500 | +971.4% | 0.00% | – |
| Q2 2017 | $10,000 | – | 700 | – | 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% |