Not to be outdone by Amazon, Walmart is holding a rival Prime Day sale that'll run longer with big deals on almost everything. Here's everything you need to know about the six-day sale.

Amazon extends Prime Day to four days and moves it up a week to get in front of tariffs. Walmart and Target plan competing sales events to capitalize on consumer worries.

Related: Walmart delivers Amazon some really bad news. Business has to go on as usual, economic uncertainty or not, and that means Amazon is preparing for its annual Prime Day sal