Ken Griffin's position in Atara Biotherapeutics is currently worth $184 Thousand. That's 0.00% of their equity portfolio (4166th largest holding). The first Atara Biotherapeutics trade was made in Q3 2015. Since then Ken Griffin bought shares 35 more times and sold shares on 35 occasions. The investor's estimated purchase price is $2.07 Million, resulting in a loss of 91%.