U.S. consumers spent $7.9 billion at online stores on Tuesday, a 9.9% increase from the comparable day last year.

The event, first launched in 2015 as a way to hook new Prime members, has pushed other retailers to launch counterprogramming ...

U.S. online shoppers shelled out $7.9 billion across all retailers on the first day of Amazon's four-day Prime Day sale, up ...

More people are shopping online this week, but so far, it hasn't led to more sales for some vendors. Here's what to know.