A global rally…The S&P 500 is set for its best month in nearly 50 years following positive news on a Gilead drug trial. U.S. Federal Reserve chairman Jerome Powell says the American economy has suffered “an extraordinary shock” in the wake of the Coronavirus pandemic. He has warned of a severe economy contraction in the second quarter and says the central bank will maintain low rates for as long as needed. Hopes of a quick recovery in China have been dashed as export numbers fell at the fastest pace since the financial crisis. In tech news, Microsoft sees shares soar in extended trade on increased cloud revenues through remote working. Plus, Facebook’s shares jump in after-hours trading as it says advertising revenues made a comeback in April. Its CFO David Wehner has told CNBC it remains cautious.