E-commerce sales grew 15%

U.S. e-commerce sales grew by double digits in the fourth quarter of 2015, accounting for virtually all retail sales growth for the year.

The Census Bureau of the Department of Commerce this week released its quarterly report estimating online sales; for the fourth quarter of 2015, e-commerce increased 14.7 percent from Q4 2014. Total retail sales increased 1.3 percent in the same period. E-commerce sales accounted for 7.5 percent of total sales in 2015.

Many retailers have been growing online sales even as those at brick-and-mortar stores have failed or remained flat. Amazon has captured the lion's share of e-commerce growth, however, and commands a roughly 23.7 percent share of the U.S. online market, according to Reuters.

Traditional retailers are coming up short in terms of growth. Walmart's online sales grew just 8 percent in its recent fourth quarter.

For more:
-See this Reuters article
-See this Census Bureau report

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