Market Tumble : A profusion of new tablets running Google 's (NASDAQ: GOOG ) Android operating system has cut Apple's share of the tablet market to 50%, CBS says. A study released by industry research firm IDC found that Apple retained a 50.4% share of the market in the third quarter, followed by Samsung, whose share more than doubled to 18.4% and Amazon (NASDAQ: AMZN ) who grabbed 9% of the tablet market. Previously, Apple's share of the tablet market had been greater than 60%. However, analysts noted that Apple was likely to recover market share in the current quarter after the release of the new iPad Mini and an updated standard-sized iPad, which hit stores last month. During the third quarter, Apple shipped 14 million iPads, up 26% from the same time last year.