Global stock markets experienced a downturn as traders anticipated Federal Reserve Chair Jerome Powell's upcoming speech at the Jackson Hole Economic Symposium. On Thursday, the Dow Jones Industrial Average fell by over 250 points, marking the worst day since the August 5 crash. This decline was driven by rising Treasury yields and market participants' concerns about potential insights into future rate policies. As of Friday morning, futures showed a slight recovery, with S&P 500 futures climbing 0.5% and Nasdaq 100 futures up 0.8%. In India, the Sensex opened flat, and the Nifty held at 24800. Investors are closely watching to see if Powell will signal any changes to interest rate policies.