F&O trading: India VIX today at 13. What does it mean for Nifty 50 call, put options by Live mint | February 17, 2026 1:10 pm | Indian Stocks, Market, News India VIX, often referred to as the market’s “fear gauge,” measures the expected short-term volatility in the Indian equity market over the next 30 days. It reflects investor sentiment and the intensity of anticipated price fluctuations.