Wall Street’s future hinges on a risky bet about what the American economy will do next

Wall Street is coasting toward the finish of its best week in the last five on Friday as U.S. stocks hang near their record levels.The S&P 500 rose 0.1% from the all-time high it set the day before. The Dow Jones Industrial Average was down 188 points, or 0.4%, as of 2:05 p.m. Eastern time, and the Nasdaq composite was 0.5% higher. Both likewise set records the day before.Stocks have rallied with expectations that the Federal Reserve will cut its main interest rate for the first time this year at its meetin ...