Joel Greenblatt's position in Comfort Systems USA is currently worth $90.3M. That's 0.25% of their equity portfolio (33rd largest holding). The first Comfort Systems USA trade was made in Q4 2012. Since then Joel Greenblatt bought shares nineteen more times and sold shares on nineteen occasions. The stake costed the investor $21.4M, netting the investor a gain of 322% so far.