The Sensex at the Bombay Stock Exchange was trading 6 points up at 19,901 points in late morning deals today.It gained 42 points in early trade today, on buying in stocks of consumer durables, oil and gas and capital goods, amid a firming Asian trend.The 30-share barometer had lost 110 points in the previous session.The Nifty at the National Stock Exchange was trading 2 points down at 6,033 points a shortwhile ago.