On Monday, the benchmark indices were trading higher with the Sensex up around 28 points or 0.05% at 71,500 while the Nifty-50 up around 15 points or 0.07% at 21,480. About 2,228 shares have advanced, 1,347 declined, and 191 are unchanged on the BSE. Top gainers and losers on the BSE Sensex index are as …