Symbol:   
S&P 500 Index (SPX) 
Options Root:  Open Help    SPX   SPXQ   SPXW  
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Current1 WK AGO131 MO AGO52 wk Hi/Date52 wk Low/Date
  HISTORICAL VOLATILITY Open Help
10 days4.72%4.75%5.05%41.76% - 02-Sep4.18% - 09-Jun
20 days5.66%5.42%11.03%32.46% - 16-Sep5.29% - 22-Aug
30 days5.25%5.51%16.43%28.44% - 30-Sep5.15% - 23-Aug
  IMPLIED VOLATILITY Open Help
IV Index call Open Help11.21%8.99%10.42%26.64% - 01-Sep8.93% - 18-Aug
IV Index put Open Help10.79%8.83%10.17%26.38% - 01-Sep8.80% - 09-Aug
IV Index mean Open Help11.00%8.91%10.30%26.51% - 01-Sep8.89% - 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