On Tuesday, the benchmark indices were trading in the red with the Sensex down around 500 points or 0.68% at 73,392, while the Nifty-50 was down around 158 points or 0.70% at 22,285. About 1,138 shares have advanced; 2,440 declined and 144 are unchanged on the BSE. Top gainers and losers on the BSE Sensex …