Joel Greenblatt's position in Comfort Systems USA is currently worth $2.91 Million. That's 0.04% of their equity portfolio (520th largest holding). The first Comfort Systems USA trade was made in Q4 2012. Since then Joel Greenblatt bought shares thirteen more times and sold shares on seventeen occasions. The stake costed the investor $1.3 Million, netting the investor a gain of 124% so far.