Investors shake off months of bad news to give the stock market its best day in two years

Wall Street blasted off Thursday to soar to its best day in more than two years as exhilaration swept through markets after a report showed inflation in the United States eased last month by even more than expected. The S&P 500 surged 5.5%, while the Dow Jones Industrial Average leaped 1,200 points and the Nasdaq composite packed…