Icahn says Apple still undervalued

(Reuters) - Apple Inc remains undervalued and misunderstood, activist investor Carl Icahn tweeted, even as the company posted stellar quarterly results on Monday. Apple beat Wall Street's revenue and profit forecasts on Monday as it sold more iPhones in China than the United States for the first time. The 79-year-old, one of Apple's top 10 investors, said in February that Apple stock should be trading at $216.