Ken Griffin's position in Transdigm Group Incorporated is currently worth $40.2 Million. That's 0.04% of their equity portfolio (532nd largest holding). The first Transdigm Group Incorporated trade was made in Q2 2013. Since then Ken Griffin bought shares 50 more times and sold shares on 49 occasions. The stake costed the investor $16.3 Million, netting the investor a gain of 147% so far.