 DES MOINES, Iowa--BUSINESS WIRE--Principal Financial Group reported today that optimism among small and medium-sized businesses is the highest its been since the COVID-19 pandemic began, with 57 percent of businesses optimistic about the overall economic outlook for the next 12 months, higher than before the pandemic began1. While many small and medium-sized businesses reported serious concerns over their long-term health in 2020, optimism is on the rise according to the most recent pulse o 