Volatility can be a good thing sometimes. It can be a gauge for the market performance or returns on your investments throughout the investing journey, according to Ananth Narayan, an all-time member of the Securities and Exchange Board of India (Sebi). “The most ubiquitous measure is actually something called volatility, and it becomes mathematical, so it gets a little confusing for the average investor. But volatility is trying to tell you how much the daily returns vary,” Narayan said during Outlook Money’s 40After40 Retirement Expo last Friday.