Joel Greenblatt acquired 117k Caterpillar shares worth $110M. That's 0.30% of their equity portfolio (23rd largest holding). The first Caterpillar trade was made in Q2 2011. Since then Joel Greenblatt bought shares 31 more times and sold shares on 27 occasions. The stake costed the investor $17M, netting the investor a gain of 548% so far.