Seth Klarman's position in Atara Biotherapeutics is currently worth $24.5 Million. That's 0.38% of their equity portfolio (25th largest holding). The investor owns 7.08% of the outstanding Atara Biotherapeutics stock. Seth Klarman started to build up the position in Atara Biotherapeutics in Q4 2014 and continued to invest until Q2 2020. Since then they sold 1.8 Million shares. The investor's estimated purchase price is $198 Million, resulting in a loss of 88%.