Tom Gayner's position in Costco Wholesale is currently worth $28.3 Million. That's 0.29% of their equity portfolio (64th largest holding). The first Costco Wholesale trade was made in Q2 2008. Since then Tom Gayner bought shares ten more times and sold shares on six occasions. The stake costed the investor $5.76 Million, netting the investor a gain of 391% so far.