Amazon Prime Day Pushed Online Spending Up 8.5% to $11.9 Billion

Online spending in the US rose 8.5% to $11.9 billion during Inc.’s two-day Prime Day promotion, according to Adobe Inc., helping boost traffic on competing sites such as and that held their own sales.

Amazon sold more than 300 million items over two days, more than any previous Prime Day, the company said Thursday. Best-selling items included diapers, beauty products and Apple watches, according to Amazon.