Costco Wholesale (COST) exceeded fourth quarter earnings estimates, reporting revenue of $86.16 billion (vs. estimates of $86.03 billion) and adjusted earnings of $5.87 per share (vs. estimates of $5.82).

Yahoo Finance senior reporter Brooke DiPalma joins Josh Lipton on Market Domination Overtime in assessing Costco's quarterly results, the retailer's North American sales figures, and how the chain competes with Walmart (WMT).

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