Mario Gabelli acquired 7.75 Thousand Costco Wholesale shares worth $3.33 Million. That's 0.03% of their equity portfolio (387th largest holding). The first Costco Wholesale trade was made in Q3 2004. Since then Mario Gabelli bought shares 25 more times and sold shares on 42 occasions. The stake costed the investor $432 Thousand, netting the investor a gain of 671% so far.