Walmart earnings report date: August 17, before markets open (confirmed)

Walmart (WMT) is heading into second quarter earnings on the back of a surprisingly positive first quarter. In its last earnings release, the click-and-mortar retail giant delivered impressive grocery sales and better-than-expected eCommerce growth. It also boosted its outlook for the full fiscal year.

Now the key question is: Can the world's largest retailer ensure that eCommerce sales growth stabilizes in the coming quarters? Walmart needs digital sales to stay strong even as multi-device in-store shopping picks up again.