Joel Greenblatt's position in NRG Energy is currently worth $26.1M. That's 0.07% of their equity portfolio (362nd largest holding). The first NRG Energy trade was made in Q2 2015. Since then Joel Greenblatt bought shares twenty more times and sold shares on 23 occasions. The stake costed the investor $5.88M, netting the investor a gain of 343% so far.