U.S. stocks head lower following their biggest week since 1974

Stocks fell broadly on Wall Street in morning trading Monday, erasing some of the market's gains after its best week since 1974. The selling came as investors weighed a pact by OPEC, Russia and other oil-producing nations to cut output in hopes of stemming a slide in crude prices following a collapse in demand due to the coronavirus pandemic. Traders were also bracing for a sobering first look this week at how the outbreak has hurt corporate America. JPMorgan Chase, Johnson & Johnson and oth