Ken Griffin's position in Idexx Laboratories is currently worth $67.8 Million. That's 0.07% of their equity portfolio (343rd largest holding). The first Idexx Laboratories trade was made in Q2 2013. Since then Ken Griffin bought shares 55 more times and sold shares on 42 occasions. The stake costed the investor $62.8 Million, netting the investor a gain of 8.1% so far.