Ken Griffin acquired 333 Thousand Exelon shares worth $15 Million. That's 0.02% of their equity portfolio (963rd largest holding). The first Exelon trade was made in Q2 2013. Since then Ken Griffin bought shares 51 more times and sold shares on 60 occasions. The stake costed the investor $13.8 Million, netting the investor a gain of 9.2% so far.