Walmart’s Profits were down last quarter. If you think "ohhh too bad… Jimmy Walmart has to build a smaller summer mansion. What do I care?"

Let’s reconsider this. Walmart cash registers ring up 20-thousand dollars in sales per second. In the time it took Jeff to type that they ran up 100-grand. And there’s another 100-grand. You get the idea?

They have 5,000 stores chock full of - well - almost everything. And Eddie Elfbein from Crossing Wall Street says Walmart is a better barometer of the US Economy than all the government statistics. And here’s what Walmart’s earnings tell us.

That middle and lower class Americans are already changing their shopping habit.