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• Once a peer to Amazon, eBay has gradually become a relatively less significant player in US e-commerce. This relative decline has occurred alongside the growth in marketplace and resale formats, with rivals including Amazon capturing greater share as the overall marketplace space has grown.
• eBay’s total US GMV has roughly flatlined over the past five years, and its underperformance equates to lost share of online retail sales—a 4.5-percentage-point attrition in channel share between 2016 and 2020, we calculate.

Click the image below for more on eBay’s position in US retail.