Ken Griffin acquired 527 Thousand Exelon shares worth $22.7 Million. That's 0.02% of their equity portfolio (793rd largest holding). The first Exelon trade was made in Q2 2013. Since then Ken Griffin bought shares 53 more times and sold shares on 61 occasions. The stake costed the investor $21.8 Million, netting the investor a gain of 4.2% so far.