Ken Griffin acquired 5.21 Million JPMorgan Chase & shares worth $709 Million. That's 0.83% of their equity portfolio (4th largest holding). The first JPMorgan Chase & trade was made in Q2 2013. Since then Ken Griffin bought shares 48 more times and sold shares on 36 occasions. The stake costed the investor $565 Million, netting the investor a gain of 26% so far.