Ken Griffin acquired 219 Thousand Duke Energy shares worth $21.5 Million. That's 0.02% of their equity portfolio (751st largest holding). The investor owns Inf% of the outstanding Duke Energy stock. The first Duke Energy trade was made in Q2 2013. Since then Ken Griffin bought shares 54 more times and sold shares on 45 occasions. The stake costed the investor $19.2 Million, netting the investor a gain of 12% so far.