Ken Griffin acquired 5.21 Million JPMorgan Chase & shares worth $650 Million. That's 0.80% of their equity portfolio (6th 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 15% so far.