Walmart Inc

• Costco's quarterly beat isn't enough to knock out the bears — here's what could - The quarter looked pretty down the fairway, with beats across key line items — the membership renewal rate.
• How Black Friday became a retail letdown: 'To sustain the ride, they started to dilute it' - Black Friday used to be the biggest in-person shopping event of the year, but for six straight years, online sales have outpaced stores.