CHICAGO--(BUSINESS WIRE)--Nearly half of CFOs expect the U.S. economy to improve during the next six months and only 9 percent expect it to worsen, according to the Grant Thornton LLP 2014 Fall CFO Survey. The biannual survey reflects the insights of more than 1,000 CFOs and other senior financial executives across the United States. The survey’s findings indicate that economic optimism has remained stable during the past year despite increasing global uncertainty. In spring 2014, 51 percent of