Move over, Microsoft. Your record as the most valuable public company ever has been topped.
Apple today set a new mark as the most valuable publicly traded company of all time, reaching more than $622 billion in market capitalization, a measure of a company's stock price times the number of shares it has outstanding.
Microsoft had long held the record for the most valuable public company, having hit $618.9 billion at the end of 1999. Since then, the software giant has watched its market cap fall to its current $258.2 billion.