Volatility describes how sharply and frequently the price of an asset moves up or down over a given period. A highly volatile stock or market can swing significantly within days or even hours, while a low-volatility asset tends to move gradually. In India, the NSE's India VIX index measures expected near-term volatility in the Nifty 50 based on options pricing. For investors, volatility is a double-edged sword—it presents opportunities to enter at attractive prices, but also demands stronger risk management, wider stop-losses, and a steadier temperament.