Volatility Index [VIX]
The Volatility Index, which is usually dubbed the “fear index” since it gauges the expectations for asset price fluctuations for the next 30 days. More specifically, the VIX tracks the implied volatility of maturing S&P500 options.
A rising VIX suggests that asset prices are expected to be more volatile or have larger fluctuations, reflecting greater uncertainty or fear in the market. A falling VIX index, on the other hand, suggests the opposite.