PRIMECAP Management acquired 9.76 Million Xencor shares worth $81.3 Million. That's 0.07% of their equity portfolio (149th largest holding). The investor owns 13.71% of the outstanding Xencor stock. The first Xencor trade was made in Q4 2013. Since then PRIMECAP Management bought shares 25 more times and sold shares on nineteen occasions. The investor's estimated purchase price is $193 Million, resulting in a loss of 58%.