Ken Griffin's position in Charles River Laboratories International is currently worth $224M. That's 0.14% of their equity portfolio (137th largest holding). The investor owns 2.52% of the outstanding Charles River Laboratories International stock. The first Charles River Laboratories International trade was made in Q2 2013. Since then Ken Griffin bought shares 63 more times and sold shares on 57 occasions. The investor's estimated purchase price is $239M, resulting in a loss of 6.2%.