Falling for the fifth straight day, the Sensex at the Bombay Stock Exchange lost 36 points to 20,679 in early trade today. The rise was attributed to sustained selling by funds, on fears of a rate hike by the Reserve Bank, amid a weak trend in other Asian markets. The 30-share barometer had lost 611 points in the previous four sessions. The Nifty at the National Stock Exchange fell 15 points, to 6,153.