The Sensex at the Bombay Stock Exchange is trading in negative territory today. It declined by 185 points in early trade and was trading 181 points down at 17,571 a short while ago.In a similar fashion, the wide-based National Stock Exchange index Nifty declined 53 points to 5,331.In Asian, Hong Kong's Hang Seng index fell by 0.56 per cent while the Dow Jones Industrial Average ended 0.41 per cent lower on Wednesday.