Apple is up around 2 percent to start the work week, giving it a share price around $663.99, making it worth about $622 billion and the most valuable company
in the history of corporations since IBM was valued at $1.3 trillion in 1967.
Microsoft -- at its peak in 1999 -- was the previous record holder with $619 billion in market capitalization. That market cap comparison doesn't account for inflation, so, for further perspective: Apple is now worth 53 percent more than Exxon Mobil -- the world's second-most valuable company.
Some analysts have predicted Apple could go even higher, with a price target of $745.80, according to the San Jose Mercury News. Of 50 analysts polled, none of them thought it was the time to sell.
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Alex Williams at TechCrunch dug up the correct valuation of IBM, warranting a correction to a previous version of this story.