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 days5.28%9.40%24.06%39.91% - 04-Jan4.35% - 19-Sep
20 days13.77%15.22%21.42%30.98% - 07-Jan5.19% - 30-Apr
30 days16.78%20.16%17.94%28.95% - 04-Jan5.74% - 03-Oct
  IMPLIED VOLATILITY Open Help
IV Index call Open Help13.08%11.06%14.25%31.76% - 24-Dec8.15% - 20-Sep
IV Index put Open Help12.81%10.94%14.09%30.73% - 24-Dec8.33% - 21-Sep
IV Index mean Open Help12.95%11.00%14.17%31.25% - 24-Dec8.26% - 20-Sep
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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