Snapping the six-day winning streak, benchmark Sensex dropped by nearly 278 points and the Nifty closed below the 26,000-mark due to profit-taking in IT, metal and capital goods shares amid a weak trend in global markets.Photograph: Francis Mascarenhas/ReutersThe 30-share BSE Sensex declined by 277.93 points or 0.33 per cent to settle at 84,673.02.During the day, it dropped 392.59 points or 0.46 per cent to 84,558.36.The 50-share NSE Nifty dipped 103.40 points or 0.40 per cent to 25,910.05. Among Sensex fir ...