Christmas came a little early for many online retailers this year, as the final shopping weekend of the holiday season pushed e-commerce sales past $28 billion for the first time ever. Research firm comScore reports that consumers increased their spending by 17 percent during the final weekend before Christmas, pushing that week’s total to a record $5.5 billion.

Online spending has exceeded $5 billion per week for each of the past three weeks, and three days in particular set record highs. Spending on Cyber Monday (November 29) exceeded $1 billion, followed by Green Monday (December 13) with $954 million and Free Shipping Day (December 17) with $942 million.

The most-visited online retailers over the final shopping weekend that ended on December 18 were Amazon with a 15-percent visit share, Walmart (7 percent) and Target (4.5 percent).