Microsoft briefly dethrones Apple as the most valuable US company (AAPL, MSFT)

Microsoft briefly surpassed Apple as the most valuable US company.
It passed Apple on Monday with a market value of about $812 billion.
Watch Microsoft and Apple trade live.Microsoft on Monday briefly surpassed Apple as the most valuable company in the US, with a market capitalization of about $812 billion. Still, Apple was back on top by the stock market's close, with a market value of more than $825 billion. The last time Microsoft was more valuable than Apple was in 2010.
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