Ken Griffin acquired 5.21 Million JPMorgan Chase & shares worth $798 Million. That's 0.88% of their equity portfolio (7th largest holding). The first JPMorgan Chase & trade was made in Q2 2013. Since then Ken Griffin bought shares 52 more times and sold shares on 44 occasions. The stake costed the investor $573 Million, netting the investor a gain of 39% so far.