An extremely volatile stock market and a big sell-off on Wednesday helped Apple to assume the position of the most valuable US company as far as its stock value is concerned. Apple shares were down 2.76% to $363.69, which gave the company a market cap of $337.17 billion. Exxon Mobile, however, was down 4.41% to $68.03 and a market cap of $330.77 billion.

Exxon and GE dominated the market cap game before 1999, when Microsoft became the most expensive company on the U.S. stock market. Exxon was able to retake the top spot in 2005 and kept it until Wednesday. In terms of revenue, however, Exxon is playing in an entirely different league than Apple. Exxon posted annual revenue of $393 billion and a net profit of about $38 billion. Apple will be exceeding $100 billion of revenue this year with estimated profits of just under $25 billion. However, Exxon’s future is uncertain, with growth depending on oil field discoveries and an evolution of energy away from oil in the future.

Apple, however, appears to be unstoppable at this time and financial advisors are still saying that, while the relationship between the share price and its earnings turns out to be more worse than that of Exxon Mobil, the stock isn’t overly expensive. Apple is still on a path of growth and quite apparently has the trust of analysts.