Sensex Today | Stock Market LIVE on December 18, 2025: In the broader markets, the Nifty Midcap and SmallCap indices were down 0.1 per cent and 0.3 per cent, respectively on Thursday.​Sensex Today | Stock Market LIVE on December 18, 2025: In the broader markets, the Nifty Midcap and SmallCap indices were down 0.1 per cent and 0.3 per cent, respectively on Thursday. ​Home Page [ SOBAN NEWS: International and National ]