U.S. online sales reached $7.9 billion on the first day of Amazon's Prime Day, a 9.9% increase from the previous year.
Amazon's Prime Day event, which began on Tuesday, is the largest single e-commerce day so far this year, surpassing Thanksgiving sales from last year.
Various retailers such as Walmart, Target, and Best Buy have launched their own sales events to compete with Prime Day.
Overall, online sales during Prime Day are expected to reach $23.8 billion, with concerns about the impact of tariffs lingering for retailers and consumers.