Ken Griffin's position in Thermo Fisher Scientific is currently worth $91.8M. That's 0.06% of their equity portfolio (387th largest holding). The first Thermo Fisher Scientific trade was made in Q2 2013. Since then Ken Griffin bought shares 65 more times and sold shares on 61 occasions. The stake costed the investor $88.6M, netting the investor a gain of 3.6% so far.