Jim Simons's position in Comfort Systems USA is currently worth $61.9 Million. That's 0.09% of their equity portfolio (262nd largest holding). The first Comfort Systems USA trade was made in Q3 2013. Since then Jim Simons bought shares 23 more times and sold shares on 21 occasions. The stake costed the investor $43.7 Million, netting the investor a gain of 42% so far.