US equity markets retreated, losing steam in the final hour of trading as reports cast doubt on Moderna Inc’s experimental COVID-19 vaccine - Dow fell -391-points or -1.59%, snapping a three session winning streak. The broader S&P500 lost -1.05%, with Energy (down -2.89%) and Financials (-2.52%) leading all eleven primary sectors lower. The technology-centric NASDAQ fell -0.54%. Moderna Inc fell 10.41% after a report from Stat News , citing several vaccine experts, said that based on information that the company has released there is no way to determine the efficacy of the drug.