More than half of online sales growth in the US came from Amazon last year

More than half of US e-commerce growth in 2016 came from a single company: Amazon.

According to market research firm Slice Intelligence, Amazon accounted for 53% of online sales growth in the US last year, leaving all of its competitors to fight for the remaining 47% of the pie. That means for every new dollar American consumers spent online, Amazon took 53 cents of it.

In total, Amazon took 43% of all the revenue generated online in the US market last year, Slice estimates.

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This isn't the first time Amazon drove the majority of US online sales growth. In 2015, Macquarie estimated 51% of e-commerce sales growth came from Amazon, a huge jump from the previous two years, when it accounted for 33% and 36% of the growth, respectively.

Add this to the fact that Amazon had a record holiday season, and all signs point to another blow out quarter for the e-commerce giant, who reports fourth quarter earnings Thursday after the bell. Here's what the street expects, according to Yahoo Finance:

• Earnings-per-share (EPS): $1.35 vs. $1 last year
• Revenue: $44.68 billion vs. $35.75 billion last year

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