The Sensex at the Bombay Stock Exchange was trading flat in late morning trade. It was down 13 points at 29,908 a short while ago. The index had risen 100 points to 30,020 in opening trade today. The Nifty was also flat. At the foreign exchange market, the rupee advanced 10 paise to 64 rupees and 11 paise against the dollar in early trade.