An extraordinary squeeze in the gold market has forced the main U.S. exchange to take action as the global pandemic shuts down physical trading routes just as investors are racing to buy the metal as a safe haven. Banks and traders typically ship gold around the world on commercial flights, linking the trading hubs of London and New York with vaults and refineries in Switzerland, Hong Kong and Singapore. But as the coronavirus grounds flights and refineries shut down, it’s becoming harder to trade between global markets.
