Ken Griffin acquired 6.91M ST Microelectronics - New York Shares shares worth $542M. That's 0.35% of their equity portfolio (32nd largest holding). The first ST Microelectronics - New York Shares trade was made in Q2 2013. Since then Ken Griffin bought shares 62 more times and sold shares on 63 occasions. The stake costed the investor $239M, netting the investor a gain of 126% so far.