VIX (Volatility Index)

The VIX is a number that measures how much fear or uncertainty exists in the stock market right now. Think of it as the market's stress level—higher numbers mean investors are worried and expect wild price swings, while lower numbers suggest calm and confidence. You'll see the VIX mentioned in financial news whenever markets get shaky, because it helps predict whether stocks are about to get bumpy. It's calculated using options prices (contracts that let you bet on future stock movements), so it's forward-looking rather than just reflecting what already happened. For example, if a major bank announces trouble, the VIX might spike from 15 to 25, signaling that traders expect bigger price swings ahead. Many investors watch it as a reality check on market mood.