On Friday, the benchmark indices were trading higher with the Sensex up around 250 points or 0.35% at 69,773 while the Nifty-50 up around 77 points or 0.32% at 20,967. About 1,957 shares have advanced, 1,617 declined, and 158 are unchanged on the BSE. Top gainers and losers on the BSE Sensex index are as …