Joel Greenblatt's position in Comfort Systems USA is currently worth $6.48 Million. That's 0.07% of their equity portfolio (411th largest holding). The first Comfort Systems USA trade was made in Q4 2012. Since then Joel Greenblatt bought shares fifteen more times and sold shares on eighteen occasions. The stake costed the investor $3.06 Million, netting the investor a gain of 111% so far.