Ken Griffin acquired 48.3 Thousand MKS Instruments shares worth $5.42 Million. That's 0.01% of their equity portfolio (1496th largest holding). The first MKS Instruments trade was made in Q2 2013. Since then Ken Griffin bought shares 54 more times and sold shares on 50 occasions. The investor's estimated purchase price is $6.1 Million, resulting in a loss of 11%.