Meanwhile, a separate study by comScore found U.S. retail e-commerce spending grew by 15% year-over-year in the third quarter, marking the 20th consecutive quarter of double-digit growth.
Mobile continued to grow at a much faster clip (70%) than desktop (8%), with the latter seeing growth below 10% for the third consecutive quarter.
In sum, mobile accounted for slightly more than 16% of the total retail e-commerce sales of $69.7 billion, up from 14.7% share in Q1.