A new Gartner report (reported by AppleInsider) notes that despite increased sales, the Mac has yet to gain a market share increase. The report, however, partially conflicts with a previous ZDNet report based on preliminary Gartner data. U.S. Mac Market Share 1Q 2005: 3.8% 4Q 2005 (AI): 3.5% 1Q 2006 (ZDNet): 3.5% 1Q 2006 (AI): 3.6% Worldwide Mac Market Share 1Q 2005: 2.2% 1Q 2006 (ZDNet): 2.3% 1Q 2006 (AI): 2.0% The PC industry as a whole is growing, with overall PC shipments in the U.S. booming 7.4% quarter over quarter and 13.1% year over year, so Mac sales would have to increase at a greater rate than the market as a whole in order for the Mac's market share to increase. Similarly, if Apple does not keep pace with the market, its share will decrease. In a time when many users interested in buying a Mac have been waiting for Intel-based versions, Apple roughly maintaining its current market share is perhaps a feat unto itself. AppleInsider provides the following analysis: Also from the report, Dell is beginning to lose some ground to rival HP. HP's worldwide market share increased 1.1%, while Dell lost 0.4% according to the report. Similar trends were also present for the companies' respective U.S. market shares.