Amazon has eclipsed Microsoft as the most valuable publicly traded company in the US as a see-sawing stock market continues to reshuffle corporate America's pecking order.
The shift occurred Monday after Amazon's shares rose 3% to close at $1,629.51 and lifted the e-commerce leader's market value to $797 billion.
It marks the first time Amazon has held the top spot and ends Microsoft's brief return to the pinnacle after it surpassed Apple in late November.
Microsoft's stock edged up by less than 1% to finish at $102.06, leaving the computer software maker's value at $784 billion.
Apple, which had been part of a close three-way race for the seat, is now down to about $702 billion in market value after plunging last week on the news of its weak iPhone sales.
Google parent company Alphabet has surpassed Apple with a market value of about $748 billion.