UPDATE 1-Amazon.com briefly Wall Street's most valuable company

(Adds graphic on companies' market values) SAN FRANCISCO, Dec 3 (Reuters) - 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 capitalization at $865.0 billion. Apple traded up 2.1 percent, giving it a market capitalization of $864.8 billion. Microsoft, which on Friday closed above Apple's market capitalization 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. The tight race between the trio of high-powered technology stocks coincided with a broad stock market rally after the United States and China agreed on a temporary truce in their ongoing trade dispute.

Apple in August became the first U.S. publicly-listed company to reach a $1 trillion market capitalization, but the iPhone maker's share price has fallen sharply in recent months as investors worried that demand for iPhones was losing steam.

Amazon.com's stock has recovered most of the ground it lost after the online retailer in October forecast disappointing sales for the holiday quarter, but it is still down about 13 percent from its Sept. 4 record-high close. Apple's market capitalization overtook Microsoft's in 2010 as Microsoft struggled with slow demand for personal computers, due in part to the explosion of smartphones like the iPhone.

(Reporting by Noel Randewich; editing by Rosalba O'Brien and G Crosse)