According to IDC’s Worldwide Quarterly Tablet Tracker, tablet shipments reached a record 52.5 million units worldwide in Q4 2012. Apple remains the leader in the tablet market with shipments of 22.9 million units and a 43.6% market share. This is a 48% year-over-year increase in tablet shipments.

Though Apple is shipping more tablets per quarter, its overall market share is declining slightly from 46.4% in Q3 2012 down to the current 43.6%. This decline can be attributed to competition from vendors like Samsung, which saw its tablet shipments grow to 7.9 million units last quarter (a whopping 263% year-over-year increase). Though their yearly increases were less than 10%, Amazon and Barnes & Noble also gained market share in the quarter.

Apple also faces competition from smaller tablets makers like Archos, Acer and others. Companies that sell less than 1 million tablets are grouped by IDC into the “Others” category and this conglomerate grabbed 22.1% of the market.

IDC: Apple leads in tablet shipments, but overall market share slips originally appeared on TUAW – The Unofficial Apple Weblog on Thu, 31 Jan 2013 10:00:00 EST. Please see our terms for use of feeds.

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