Costco (COST) came out with quarterly earnings of $5.15 per share, beating the Zacks Consensus Estimate of $5.05 per share. This compares to earnings of $4.86 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of 1.98%. A quarter ago, it was expected that this warehouse club operator would post earnings of $3.70 per share when it actually produced earnings of $3.78, delivering a surprise of 2.16%.Over the last four quarters, the com ...