Ken Griffin, the founder of Citadel, expressed concerns about the potential impact of Donald Trump"s tariff policies during a speech at the Oxford Union in the UK. He warned that tariffs could have negative consequences for the competitiveness of U.S. companies in the global market, describing them as a "long, slippery slope."

Griffin"s remarks were made in the context of Trump"s election victory, which he believes indicates a shift towards a more business-focused environment in the U.S. Despite his worries about tariffs, Griffin remains optimistic about the overall direction of the economy under the new administration.