The Bombay Stock Exchange benchmark Sensex fell by 185 points in early trade today. The Sensex was at 16551 down by 168 points when reports last came in. Similarly, the Nifty index on the wide-based National Stock Exchange moved down by 46 pointsto 4,923 points. Analysts say the fall in sensex is due to profit booking by funds and retail investors amid weak global cues.Major losers were Infosys Tech which, Wipro, RIL, Reliance Infra, State Bank of India, ICICI Bank, Jaiprakash Associates , DLF Ltd .The US Dow Jones Industrial Average ended 0.83 per cent down in yesterday's trade, while Hong Kong's Hang Seng index was down 2.60 per cent in morning trade today.