Joel Greenblatt's position in Halliburton is currently worth $17.9M. That's 0.10% of their equity portfolio (255th largest holding). The first Halliburton trade was made in Q1 2012. Since then Joel Greenblatt bought shares 26 more times and sold shares on 21 occasions. The stake costed the investor $17.7M, netting the investor a gain of 1.5% so far.