Apple (AAPL) - Get Report is up 10 percent in the past two weeks on a swirl of news including an investment from Berkshire Hathaway (BRK.B) - Get Report and CEO Tim Cook's barnstorming trip to Asia. Michael Robinson, chief technology strategist at Money Morning, said the headlines reflect the gathering momentum for the technology giant's stock. 'Buffett team's $1 billion investment shows the stock is underpriced and great for the long haul and going to china is a smart move for Cook because it shows his personal commitment to the firm's second largest market,' said Robinson. Robinson added that the stock is still cheap at just 11 times forward earnings, almost 40 percent less than the S&P. He is also bullish on Facebook (FB) - Get Report , up 13 percent year-to-date, saying the social networking giant lived up to the hype with its blow out first quarter which saw sales surge 52 percent year-over-year and earnings rise 195 percent.