The Sensex at the Bombay Stock Exchange was trading with a marginal gains of 19 points, at 19,306, in the afternoon trade, a short while ago. The Nifty of the National Stock Exchange moved up 5 points, to 5,877.In other Asian markets, key indices in Hong Kong, South Korea and Sinagaore were trading mixed, in intra-day trade; while stock markets in China and Japan were closed for a holiday.