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Volatility: Meaning in Finance and How It Works With Stocks

Feb 12, 2026 · Volatility shows how much a security or market index’s returns fluctuate over time, indicating how widely prices move around their average. It's often calculated from the standard deviation or...

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VIX Price, Real-time Quote & News - Google Finance

VIX is the ticker symbol and popular name for the Chicago Board Options Exchange's CBOE Volatility Index, a popular measure of the stockmarket's expectation of volatility based on S&P 500 index ...