Costco Q3 Earnings Miss Estimates, Revenues Up Y/Y After delivering five straight quarters of positive earnings surprise, Costco Wholesale Corporation reported a miss in third-quarter fiscal 2020 results. Total revenues also lagged the Zacks Consensus Estimate, after surpassing the same in the preceding quarter. However, the top line improved year over year and the company logged a decent comparable sales growth. The company's overall sales increased in the month of March, as consumers stocked up food and essentials items in the wake of the pandemic.