Ken Griffin's position in Idexx Laboratories is currently worth $46.9 Million. That's 0.06% of their equity portfolio (425th largest holding). The first Idexx Laboratories trade was made in Q2 2013. Since then Ken Griffin bought shares 46 more times and sold shares on 36 occasions. The stake costed the investor $35.3 Million, netting the investor a gain of 33% so far.