Joel Greenblatt's position in Costco Wholesale is currently worth $10.7 Million. That's 0.11% of their equity portfolio (252nd largest holding). The first Costco Wholesale trade was made in Q4 2014. Since then Joel Greenblatt bought shares fourteen more times and sold shares on nineteen occasions. The stake costed the investor $3.68 Million, netting the investor a gain of 191% so far.