Mario Gabelli acquired 7.03 Thousand Costco Wholesale shares worth $7.09 Million. That's 0.08% of their equity portfolio (256th largest holding). The first Costco Wholesale trade was made in Q3 2004. Since then Mario Gabelli bought shares 30 more times and sold shares on 48 occasions. The stake costed the investor $400 Thousand, netting the investor a gain of 1670% so far.