Ken Griffin acquired 34.1 Thousand Prothena plc shares worth $726 Thousand. That's 0.00% of their equity portfolio (3049th largest holding). The first Prothena plc trade was made in Q2 2014. Since then Ken Griffin bought shares 42 more times and sold shares on 47 occasions. The investor's estimated purchase price is $1.08 Million, resulting in a loss of 33%.