Inflation has risen to its highest level in 31 years, sending consumer prices on everything from groceries to gas to rent surging. For many businesses, that's good news as inflation typically means better profit margins. According to data from FactSet, nearly two out of three of the biggest U.S. publicly traded companies have reported fatter profit margins so far this year compared to the same stretch of 2019, before the pandemic. Gregory Daco, chief U.S. economist for Oxford Economics, breaks down how the top businesses are reaping the benefits of inflation, and when consumers can expect inflation to ease.