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 days8.39%6.16%13.20%27.77% - 08-Jul4.18% - 09-Jun
20 days7.69%10.34%10.70%23.95% - 03-Feb4.76% - 02-Sep
30 days9.86%9.20%10.12%22.88% - 17-Feb5.15% - 23-Aug
  IMPLIED VOLATILITY Open Help
IV Index call Open Help10.08%11.07%15.25%25.62% - 11-Feb8.93% - 18-Aug
IV Index put Open Help10.05%10.59%14.99%25.48% - 11-Feb8.80% - 09-Aug
IV Index mean Open Help10.07%10.83%15.12%25.55% - 11-Feb8.89% - 09-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