Ken Griffin acquired 170 Thousand Entegris shares worth $21.5 Million. That's 0.02% of their equity portfolio (761st largest holding). The first Entegris trade was made in Q2 2013. Since then Ken Griffin bought shares 50 more times and sold shares on 39 occasions. The stake costed the investor $16.2 Million, netting the investor a gain of 33% so far.