Falling Commodity Prices Raise Hopes That Inflation Has Peaked

A slide in all manner of raw-materials prices—corn, wheat, copper and more—is stirring hopes that a significant source of inflationary pressure might be starting to ease.

Natural-gas prices shot up more than 60% before falling back to close the quarter 3.9% lower. U.S. crude slipped from highs above $120 a barrel to end around $106. Wheat, corn and soybeans all wound up cheaper than they were at the end of March. Cotton unraveled, losing more than a third of its price since early May. Benchmark prices for building materials copper and lumber dropped 22% and 31%, respectively, while a basket of industrial metals that trade in London had its worst quarter since the 2008 financial crisis.