U.S. Stocks Open Lower After US Downgrade; Novavax Surges 22% as FDA Approves Its COVID Vaccine
U.S. stocks fell on Monday, while Treasury yields rose after ratings agency Moody's downgraded the country's sovereign rating by one notch, bringing forward concerns around the ballooning U.S. debt.Novavax shares surged 20% on Monday, following the long-delayed approval of its COVID-19 vaccine from the U.S. health regulator, albeit with new conditions.