Joel Greenblatt acquired 499k Pinnacle West Capital shares worth $50.2M. That's 0.14% of their equity portfolio (134th largest holding). The first Pinnacle West Capital trade was made in Q4 2014. Since then Joel Greenblatt bought shares twenty more times and sold shares on eight occasions. The stake costed the investor $43.6M, netting the investor a gain of 15% so far.