Walmart delivery has reached Amazon-like speeds. It just helped the company turn a profit online.

Walmart's big bet on delivery is finally starting to pay off. After years of effort and billions of dollars, the retailer is on the verge of being able to deliver to 95% of the US population within three hours, CEO Doug McMillon said during the company's first-quarter earnings call on Thursday.That's faster than Amazon (though Walmart's selection of products available for such speedy delivery is smaller). Not only is its delivery reach getting wider, the company handled nearly twice as many three-hour d ...