Mario Gabelli acquired 8.39k Costco Wholesale shares worth $8.02M. That's 0.07% of their equity portfolio (259th largest holding). The first Costco Wholesale trade was made in Q3 2004. Since then Mario Gabelli bought shares 32 more times and sold shares on 48 occasions. The stake costed the investor $483k, netting the investor a gain of 1561% so far.