MoMo Productions / Getty Images Small business optimism fell in September to its lowest levels in three months as owners expressed increasing uncertainty about business conditions. Key Takeaways The Small Business Optimism Index declined to 98.8 in September as uncertainty surged due to shifting U.S. government policies. The uncertainty index reached its fourth-highest level in the survey’s history, as business owners expressed concerns about supply chains, inflation, and inventory levels. More busin ...