Apple shipped an estimated 68% of all tablets in Q1 2012

"A steep drop in shipments of Android-based tablets offset a strong quarter from Apple and caused the media tablet market to miss projections for the first quarter of 2012 (1Q12), according to preliminary data from the International Data Corporation (IDC) Worldwide Quarterly Media Tablet and eReader Tracker. Total worldwide media tablet shipments for the quarter reached 17.4 million units in 1Q12, 1.2 million units below IDC's projection for the quarter. While IDC predicted a sharp seasonal slowdown of -34% from the previous quarter’s record-breaking 28.2 million units, the actual decline was slightly steeper at -38.4%. The total still represents a robust year-over-year growth rate of 120%, up from 7.9 million units in the first quarter of 2011.
"Apple reasserted its dominance in the market this quarter, driving huge shipment totals at a time when all but a few Android vendors saw their numbers drop precipitously after posting big gains during the holiday buying season," said Tom Mainelli, research director, Mobile Connected Devices at IDC. "Apple's move to position the iPad as an all-purpose tablet, instead of just a content consumption device, is resonating with consumers as well as educational and commercial buyers. And its decision to keep a lower-priced iPad 2 in the market after it launched the new iPad in March seems to be paying off as well."
Apple shipped 11.8 million iPads during the quarter, down from 15.4 million units in the fourth quarter of 2011, and grew its worldwide share from 54.7% in 4Q11 to 68% in 1Q12. Amazon, which stormed into the market in 4Q11 to grab second place with 16.8% of the market on shipment of 4.8 million units, saw its share decline significantly in the first quarter to just over 4%, falling to third place as a result. Samsung took advantage of Amazon's weakness to regain the number two position while Lenovo vaulted into the number four spot, followed by Barnes & Noble at number five.
Although total Android shipments were down sharply in 1Q12, companies such as Samsung and Lenovo are beginning to gain traction in the market with their latest generation of Android products. IDC expects the segment to rebound quickly as other vendors introduce new products in the second quarter and beyond."

Source:  Data from IDC reported in a press release, 3rd May 2012