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 | ||||
|---|---|---|---|---|---|---|
| Q4 2019 | $900,000 | -27.8% | 54,625 | -38.2% | 0.04% | -29.0% |
| Q3 2019 | $1,247,000 | +39.6% | 88,325 | +98.8% | 0.06% | +21.6% |
| Q2 2019 | $893,000 | +273.6% | 44,425 | +637.3% | 0.05% | +264.3% |
| Q1 2019 | $239,000 | -7.4% | 6,025 | -67.3% | 0.01% | 0.0% |
| Q2 2017 | $258,000 | -78.8% | 18,438 | -71.2% | 0.01% | -74.1% |
| Q1 2016 | $1,216,000 | +29.4% | 63,941 | +79.6% | 0.05% | +20.0% |
| Q4 2015 | $940,000 | +79.4% | 35,611 | +182.1% | 0.04% | +150.0% |
| Q1 2015 | $524,000 | – | 12,624 | – | 0.02% | – |
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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% |