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 days8.69%22.72%21.48%39.91% - 04-Jan4.14% - 20-Jun
20 days28.33%30.27%22.60%30.98% - 07-Jan5.43% - 14-Sep
30 days26.19%28.39%21.12%28.95% - 04-Jan5.74% - 03-Oct
  IMPLIED VOLATILITY Open Help
IV Index call Open Help14.18%15.83%22.33%31.98% - 05-Feb7.80% - 07-Aug
IV Index put Open Help13.91%15.36%21.44%31.63% - 05-Feb7.88% - 06-Aug
IV Index mean Open Help14.05%15.59%21.88%31.81% - 05-Feb7.86% - 07-Aug
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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