Snapping a four-session winning streak, the Sensex at the Bombay Stock Exchange fell 168 points to 17,411, today. This follows weak global markets, and after the Reserve Bank's unexpected hike in key policy interest rates. The Sensex had fallen 19 points at the day's high, and lost 241 points at the day's low. The Nifty at the National Stock Exchange slid 58 points, to 5,205.