The chief executives of the some of Wall Street's biggest companies have slammed pro-Trump protests in Washington after thousands of protesters stormed the US Capitol, bringing a halt to the formal confirmation of the president's election defeat.

Michael Corbat, the chief executive of Citigroup, said he was "disgusted" by the actions of the protesters, who overcame barriers to enter US Congress as it looked to endorse Joe Biden, egged on by Trump himself over Twitter.