Costco Falling On Unusual Volume

Shares of Costco COST are falling on heavy volume during Wednesday's trading session. The stock has lost 1.32% to $80.28. More than 3.7 million COST shares have already traded hands compared to a 3-month daily average of around 2.5 million. Costco Wholesale Corporation (Costco) operates membership warehouses that offer its members low prices on a limited selection of branded and selected private-label products in a range of merchandise categories.