Mario Gabelli acquired 11.4 Thousand Costco Wholesale shares worth $8.32 Million. That's 0.09% of their equity portfolio (251st largest holding). The first Costco Wholesale trade was made in Q3 2004. Since then Mario Gabelli bought shares 28 more times and sold shares on 46 occasions. The stake costed the investor $645 Thousand, netting the investor a gain of 1189% so far.