On Friday, the benchmark indices were trading in the red with the Sensex down around 513 points or 0.70% at 72,582, while the Nifty-50 was down around 183 points or 0.85% at 21,962. About 1,306 shares have advanced; 2,285 declined; and 123 are unchanged on the BSE. Top gainers and losers on the BSE Sensex …