xboxonePoint, Microsoft.

The NPD Group just released its U.S. sales data for December and the Xbox One sold 908,000 units last month, helping it beat out Sony’s PlayStation 4 as the best-selling console.

Sony does not release sales figures, so it’s unclear as to how many PS4’s were sold in the U.S. However, Microsoft’s Xbox 360 sold 643,000 units last month, good enough for third place. So, it looks like Sony sold somewhere between 643,000 and 908,000 PS4’s in December. We’ve reached out to the company for more details.

Sony’s second-place finish may have been due to its lack of PS4 supply, as Microsoft seemed to have more of its next-generation console in stock over the holidays.

ps4Earlier this month, Microsoft said it sold 3 million Xbox One’s around the world. One day later, Sony announced that it had sold 4.2 million PS4’s worldwide. Sony is selling its console in 52 countries, while Microsoft has stuck with its initial 13 launch markets.

Microsoft noted that Xbox One customers are purchasing an average of 2.9 games per console in the U.S. The Redmond giant has typically topped NPD’s monthly list for the U.S. console market, as the Xbox 360 held the title of best-selling console for 32 straight months before temporarily giving up the spot to Sony’s PlayStation 3 this past September.

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