Amazon.com briefly became the most valuable company on Wall Street in intraday trade on Monday, days after Microsoft Corp dethroned long-time leader Apple Inc .
Amazon rose as much as 4.7 percent, putting its market capitalisation at $865.0 billion. Apple traded up 2.
1 percent, giving it a market capitalisation of $864.8 billion.
Microsoft, which on Friday closed above Apple's market capitalisation for the first time in eight years, was up 0.9 percent, leaving its stock market value at $859.0 billion, third in the group.