The VIX, or CBOE Volatility Index, measures the market's expectation of volatility over the next 30 days based on S&P 500 options prices. Known as the 'fear gauge', a high VIX (above 30) signals fear and uncertainty, while a low VIX (below 15) signals calm, complacent markets. It spikes during crashes and crises.
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Market Navigator Glossary — plain-English definitions of 93+ investing and crypto terms. All content is for educational purposes only and does not constitute financial advice.