The VIX — the CBOE Volatility Index — is often called the market's fear gauge. It measures the implied volatility of S&P 500 options over the next 30 days. When it spikes, markets are pricing in significant uncertainty. When it is low, markets are complacent. It is one of the most widely watched indicators in finance.
But here is what the VIX does not tell you: why volatility is rising. It does not distinguish between geopolitical risk, earnings risk, recession risk, or pure technical market dynamics. A VIX of 30 during a geopolitical crisis and a VIX of 30 during a Federal Reserve policy shock look identical — but they have very different implications for asset allocation.
What the VIX actually measures
The VIX is calculated from the prices of S&P 500 put and call options across a range of strike prices. When investors buy more put options (protection against downside), implied volatility rises and the VIX increases. It is essentially a real-time measure of how much the options market is charging for insurance against S&P 500 moves.
A VIX reading can be interpreted roughly as follows: the market is implying an annualised volatility of that percentage for the S&P 500. A VIX of 26 (the current reading) implies the market expects roughly 26% annualised volatility — meaning daily moves of about 1.6% in either direction would be considered normal.
Why the VIX alone is insufficient for geopolitical risk
The VIX is entirely backward-looking about the source of stress and entirely forward-looking about equity volatility. It tells you nothing about oil markets, gold demand, conflict intensity, or trade disruption. A geopolitical crisis that begins in an energy-exporting region might significantly affect oil prices and gold before it shows up in equity volatility — meaning the VIX can lag behind the actual development of geopolitical risk.
The 2022 Russian invasion of Ukraine is a clear example. Oil prices spiked sharply in the days before and immediately after the invasion. Gold rose. European equity markets fell. But the VIX, which primarily reflects US equity expectations, did not spike to crisis levels — partly because the US market was already falling on inflation concerns and the initial geopolitical spike was absorbed into existing elevated volatility.
Reading VIX alongside the WTM score
The World Tension Meter score incorporates the VIX as one of five signals, weighting it as part of the financial stress component (20% of the total score). This means WTM captures the equity market fear signal that VIX provides, but contextualises it alongside energy market data, conflict tracking, trade disruption signals, and media sentiment.
The current combination of WTM 82 and VIX 26 is instructive. It tells us that geopolitical and economic stress indicators are very high (82/100), but equity market volatility — while elevated — has not yet spiked to panic levels (VIX 26 is elevated but well below crisis readings of 40+). This is a common pattern: broad geopolitical risk builds for weeks or months before equity markets fully price it in. The VIX often catches up sharply when it does.
Practical implications
For investors and risk managers, the most useful framework is to watch both indicators simultaneously. When WTM is high but VIX is moderate, it suggests that equity markets may be underpricing geopolitical risk — a potential warning sign. When both are elevated simultaneously, it typically signals a crisis is already in full equity market pricing.
The gold-silver ratio, oil price, and Treasury yield are all better leading indicators of geopolitical risk than the VIX alone. The WTM score is designed to aggregate all of these signals into a single readable number — making it a more complete early-warning tool than any single variable.