Joel Greenblatt's position in Builders Firstsource is currently worth $11.5 Million. That's 0.21% of their equity portfolio (72nd largest holding). The first Builders Firstsource trade was made in Q1 2014. Since then Joel Greenblatt bought shares fifteen more times and sold shares on seventeen occasions. The stake costed the investor $2.03 Million, netting the investor a gain of 469% so far.