Joel Greenblatt's position in Southern Copper is currently worth $19.4 Million. That's 0.20% of their equity portfolio (84th largest holding). The first Southern Copper trade was made in Q2 2011. Since then Joel Greenblatt bought shares 24 more times and sold shares on twelve occasions. The stake costed the investor $15.2 Million, netting the investor a gain of 28% so far.