Stock Market Close: Indices End Flat,  GST Reforms Support Auto, FMCG

Sensex rose 150.30 points to close at 80,718.01 after hitting an intraday high of 81,456.67. Nifty gained 19.25 points to end at 24,734.30, after peaking at 24,980.75. Auto and FMCG sectors led gains post-GST reform announcements. However, Nifty Midcap 100 fell 0.67%, and SmallCap 100 declined 0.71%, reflecting broader market weakness.