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 days11.46%14.15%4.66%27.77% - 08-Jul4.18% - 09-Jun
20 days14.96%13.78%5.49%23.95% - 03-Feb4.76% - 02-Sep
30 days12.36%11.46%5.43%28.44% - 30-Sep5.15% - 23-Aug
  IMPLIED VOLATILITY Open Help
IV Index call Open Help11.54%11.18%11.26%25.62% - 11-Feb8.93% - 18-Aug
IV Index put Open Help10.54%10.15%10.89%25.48% - 11-Feb8.80% - 09-Aug
IV Index mean Open Help11.04%10.67%11.08%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