Walmart climbs 6% after earnings crush estimates, boosted by online shopping (WMT)

**

· *Walmart reported quarterly earnings on Tuesday that crushed Wall Street's estimates, boosted by a huge surge in ecommerce. *
· *Shares of Walmart climbed as much as 6% in premarket trading Tuesday before paring those gains to trade lower. *
· *Walmart's ecommerce sales soared 97% in the second quarter, as the...