Symbol:   
S&P 500 Index (SPX) 
Options Root:  Open Help    SPX   SPXQ   SPXW  
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Current1 WK AGO1 MO AGO52 wk Hi/Date52 wk Low/Date
  HISTORICAL VOLATILITY Open Help
10 days5.41%9.33%7.47%41.76% - 02-Sep4.18% - 09-Jun
20 days19.50%19.95%6.77%32.46% - 16-Sep6.77% - 22-Jun
30 days16.89%16.86%9.01%28.44% - 30-Sep8.81% - 27-Apr
  IMPLIED VOLATILITY Open Help
IV Index call Open Help9.73%10.35%18.03%32.97% - 24-Aug9.62% - 20-Jul
IV Index put Open Help9.67%10.13%17.24%33.32% - 24-Aug9.65% - 20-Jul
IV Index mean Open Help9.70%10.24%17.64%33.14% - 24-Aug9.63% - 20-Jul
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      SPX: DAILY 1 YEAR VOLATILITY CHART   ( 3 months    6 months    1 year )
    IV Index Call     IV Index Put     IV Index Call & Put     IV Index Mean
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Volatility chart
OPTIONS VOLUME, CONTRACTS
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Options volume chart