On Friday, Sensex and Nifty mix session at 10: Am, Sensex was trading 18.20 points down at 19968.62 and Nifty was trading levels 9.70 points down at 6046.90. Last on Tuesday closed at 2 higher high, with Sensex break 20000 mark. Chinaâs stock extended their rally on more buying amid hopes for grater foreign participants in the domestic market. Rupee weakened hurt by dollars demand from oil firms and companies.