In the near future, Apple may surpass Exxon Mobil as the world's biggest corporation in terms of market capitalization, says Gleacher & Co. analyst Brian Marshall. "Apple continues to defy modern principles of economics and delivered the investment community something never seen before (e.g., quarterly revenue of $28.6 billion growing 80 percent year over year)," he writes, referring to this week's third-quarter results. "We expect Apple will become the largest market cap company on the planet when the stock hits approximately $445."