Jim Simons's position in NRG Energy is currently worth $18.4 Million. That's 0.03% of their equity portfolio (680th largest holding). The first NRG Energy trade was made in Q3 2013. Since then Jim Simons bought shares seventeen more times and sold shares on 21 occasions. The stake costed the investor $5.33 Million, netting the investor a gain of 244% so far.