ATARA BIOTHERAPEUTICS INC's ticker is ATRA and the CUSIP is 046513107. A total of 128 filers reported holding ATARA BIOTHERAPEUTICS INC in Q2 2018. The put-call ratio across all filers is 0.72 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2018 | $7,047,000 | +750.1% | 180,695 | +347.7% | 0.01% | +600.0% |
| Q1 2017 | $829,000 | -96.9% | 40,359 | -95.2% | 0.00% | -96.3% |
| Q3 2015 | $26,541,000 | -16.1% | 844,180 | +40.8% | 0.03% | -6.9% |
| Q2 2015 | $31,629,000 | +27.9% | 599,485 | +0.8% | 0.03% | +26.1% |
| Q1 2015 | $24,724,000 | +214.7% | 594,758 | +102.5% | 0.02% | +228.6% |
| Q4 2014 | $7,856,000 | – | 293,695 | – | 0.01% | – |
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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% |