The Bombay Stock Exchange benchmark Sensex that opened 73 points down was trading 20 points up at 18,187 points a shortwhile ago. The wide-based National stock Exchange Nifty index also traded 8 points up at 5,460 points. Hong Kong's Hang Seng index traded lower by 0.26 per cent while Japan's Nikkei was down 1.18 per cent in early trade.