The most well-known measure of market sentiment is the CBOE Volatility Index, or VIX. The VIX measures expected price fluctuations or volatility in the S&P 500 Index options over the next 30 days.

The Cboe Volatility Index, an options-based gauge of expected volatility in the S&P 500 widely known by its trading symbol, VIX, jumped Monday morning to its highest level since December.

The S&P VIX Index (VIX) traded at 18.62 in mid-afternoon action after topping 19 earlier in the session. On Friday afternoon, ...

The Cboe Volatility Index, or VIX, jumped to its highest level of the year on Tuesday. Traders are betting it will keep rising. President Trump's tariffs and retaliatory action from the U.S.'s top tra ...

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The CBOE VIX index, the option-derived measure of expected S&P 500 volatility that's known as Wall Street's fear gauge, has eased back slightly from the highs seen during the latest market sell-off.

CNN’s Fear & Greed Index is a way to gauge stock market movements and whether stocks are fairly priced. The index uses seven market indicators to help answer the question: What emotion is driving the ...