Almost a fifth of S&P 500 companies are scheduled to report earnings this week, giving investors a look into how the Covid-19 pandemic has ravaged different sectors of the economy, from airlines to tech companies.
Many of the companies reporting—including Delta Air Lines Inc., Coca-Cola Co. and International Business Machines Corp.—are logging results for the first three months of 2020. The results will show only some of the fallout from the coronavirus pandemic as the U.S. economy didn’t shut down widely until the quarter’s…