Joel Greenblatt acquired 15.1 Thousand ABM Industries shares worth $768 Thousand. That's 0.01% of their equity portfolio (919th largest holding). The first ABM Industries trade was made in Q1 2012. Since then Joel Greenblatt bought shares sixteen more times and sold shares on eighteen occasions. The stake costed the investor $691 Thousand, netting the investor a gain of 11% so far.