Ken Griffin acquired 107 Thousand Prothena plc shares worth $760 Thousand. That's 0.00% of their equity portfolio (3069th largest holding). The first Prothena plc trade was made in Q2 2014. Since then Ken Griffin bought shares 49 more times and sold shares on 52 occasions. The investor's estimated purchase price is $3.33 Million, resulting in a loss of 77%.