US stocks: US market rises as yields ease, Moderna lifts healthcare stocks

US stock markets enjoyed a boost as easing bond yields and a spike in Moderna shares contributed to a favorable trading environment. Despite the Federal Reserve's minutes highlighting inflation concerns and discussions on rate hikes, investors remained optimistic. The Treasury's announcement of liquidity support revitalized riskier assets, particularly in tech stocks, while the success of Moderna's cancer therapy trial uplifted the healthcare sector.