Joel Greenblatt's position in Costco Wholesale is currently worth $9.67 Million. That's 0.15% of their equity portfolio (140th largest holding). The first Costco Wholesale trade was made in Q4 2014. Since then Joel Greenblatt bought shares thirteen more times and sold shares on seventeen occasions. The stake costed the investor $4.17 Million, netting the investor a gain of 132% so far.