Ken Griffin acquired 3.58 Million American Electric Power Company shares worth $370 Million. That's 0.37% of their equity portfolio (40th largest holding). The investor owns Inf% of the outstanding American Electric Power Company stock. The first American Electric Power Company trade was made in Q2 2013. Since then Ken Griffin bought shares 61 more times and sold shares on 53 occasions. The stake costed the investor $351 Million, netting the investor a gain of 5.3% so far.