The VIX index, or Volatility Index, commonly referred to as the "fear gauge," measures market expectations of near-term volatility, derived from S&P 500 index options. Typically, a higher VIX value indicates increased investor uncertainty and perceived market risk. When market conditions are expected to be turbulent, the VIX tends to rise, reflecting traders' anticipation of greater price fluctuations.
Conversely, a lower VIX suggests a stable market environment with reduced risk perceptions. Investors often use the VIX as a tool to gauge market sentiment, where spikes in the index can signal potential downturns. However, it is important to note that the VIX is not a predictive tool but rather a measure of existing market expectations and investor behavior.