Wall Street suffers biggest drop since September

Wall Street suffered its worst session in over a month on Thursday as lower commodity prices weighed on energy and materials stocks and comments by a Federal Reserve policymaker hinted at an approaching interest-rate hike. The rout hit all 10 major S&P sectors and pushed the Dow and S&P 500 below their 200-day moving averages, which some traders believe portends additional declines. Investors are keeping a watchful eye on whether the Fed in December will raise rates for the first time in