In a nutshell, in the year 2021, BSE Sensex advanced around 10,000 points in a single year and is qualified to be one of the best years for BSE. Comparing BSE Sensex with ten major world indices across nine countries shows that it displayed the best performance among major Asian economies in 2021. The small-cap stocks that are comparatively more volatile than the large-cap and mid-cap space returned the investors' handsome gains with some stocks turning into multi-baggers for 2021.