Nvidia is caught in the middle of an escalating trade war between the world’s two largest economies. Nvidia on Tuesday said it will take a $5.5 billion financial hit after Washington placed fresh restrictions on the export of its H20 artificial intelligence chips to China,

Gold has jumped to a fresh high as investors fret over the impact of the trade war between the US and China. Spot gold touched $3,357.40 (£2,540) per ounce on Wednesday, before dipping from its peak. It has risen by around a third since the start of the year.

Singapore Prime Minister Lawrence Wong said on Wednesday there was little comfort in the U.S. postponing most of its proposed "reciprocal" tariffs, saying the changes had already created great uncertainty around the world.