VIX Is Running Above the Model

The latest volatility chart shows the CBOE Volatility Index, or VIX, remaining above the model VIX. The spread between the two measures is currently listed at approximately 3.44 points. This means the market-implied measure of expected S&P 500 volatility is materially higher than the level indicated by the model used in the chart.

The relationship has varied significantly over the historical period shown. During major volatility events, both measures moved sharply higher, with the VIX producing particularly pronounced spikes. At other times, the model and market measure traded much closer together. The current gap therefore stands out more for its relative positioning than for an exceptionally high absolute level of volatility.

The Spread Is Elevated Historically

The lower portion of the chart provides additional context by measuring the difference between the VIX and the model VIX. The current spread has a z-score of approximately 0.55 based on the past 252 trading days. More importantly, the reading is identified as being at the 81st percentile since 2014.

A percentile ranking places the current observation in historical context rather than simply measuring its absolute size. An 81st-percentile reading means the current VIX-versus-model spread is higher than approximately 81% of observations in the referenced historical period. It therefore indicates an elevated volatility premium relative to the model, but not an extreme reading comparable with the largest historical spikes.

The red bars in the lower chart also show that the spread has repeatedly expanded and contracted over time. Periods of elevated readings have often coincided with increases in market uncertainty, while narrower spreads have appeared during calmer conditions.

What the Volatility Premium Means for Investors

A VIX trading above its model can indicate that options markets are pricing more uncertainty than the model would otherwise imply. This can influence the cost of portfolio hedging, options strategies and risk management decisions. However, the chart alone does not establish why the premium exists or whether it must immediately decline.

For U.S. investors and Israeli investors with exposure to American equities, the metric offers another way to evaluate the market beyond the level of the S&P 500 itself. A relatively elevated volatility premium can coexist with stable equity prices, particularly when investors are purchasing protection against potential future moves rather than reacting to an immediate market decline.

The key measure to watch is whether the current spread continues widening or begins moving back toward its historical range. A further increase would indicate that implied volatility is becoming increasingly elevated relative to the model, while a narrowing spread would suggest that the premium being assigned to market uncertainty is moderating.