Amazon briefly becomes world's most valuable company at $870 bn
World's richest person Jeff Bezos' Amazon briefly became the world's most valuable company on Monday, days after Microsoft dethroned Apple. The online retailer's shares surged 5.2% at its highs, pushing the company's market capitalisation to around $870 billion. At Monday's close, Apple was back on top with a market value of $877 billion followed by Amazon at $866.6 billion.