On Monday, the benchmark indices were trading flattish with the Sensex up around 38 points or 0.05% at 72,675, while the Nifty-50 was down around 15 points or 0.08% at 22,009. About 1,797 shares have advanced; 1,465 declined; and 125 are unchanged on the BSE. Top gainers and losers on the BSE Sensex index: The …