Wall Street's main indexes were mixed on Monday as investors watched a fresh round of U.S.-China negotiations aimed at mending a trade rift that has rattled financial markets for much of the year. Top officials from both countries have kicked off discussions at London's Lancaster House,

Wall Street loves a catchy acronym, and the “TACO trade” has captured the mood, as investors and analysts attempt to make sense of the roller-coaster market action that has followed President Donald Trump’s sweeping tariff threats and subsequent walk-backs.

High-level delegations from the United States and China are meeting in London to try and shore up a fragile truce in a trade dispute that has roiled the global economy