Stocks dived and investors scrambled to the safety of bonds, gold and the yen on Thursday as Donald Trump unveiled a bigger-than-expected wall of tariffs around the world’s largest economy, upending trade and supply chains. The technology sector was pummelled as manufacturing hubs in China and Taiwan faced new tariffs above 30%. In total, China now faces an eye-watering 54% in tariffs on its exports to the US. “The US effective tariff rate on all imports look to be the highest level in over a century,” said Ben Wiltshire, Citi’s global rates trading strategist. Nasdaq futures tumbled 3.3% and in...