Joel Greenblatt acquired 302 Thousand Masco shares worth $18.8 Million. That's 0.19% of their equity portfolio (93rd largest holding). The first Masco trade was made in Q3 2011. Since then Joel Greenblatt bought shares 25 more times and sold shares on 25 occasions. The stake costed the investor $12.4 Million, netting the investor a gain of 51% so far.