Joel Greenblatt acquired 12.5 Thousand GMS shares worth $1.15 Million. That's 0.02% of their equity portfolio (742nd largest holding). The first GMS trade was made in Q2 2017. Since then Joel Greenblatt bought shares eleven more times and sold shares on ten occasions. The stake costed the investor $652 Thousand, netting the investor a gain of 77% so far.