Symbol:   
S&P 500 Index (SPX) 
Options Root:  Open Help    SPX   SPXQ   SPXW  
.
Current1 WK AGO1 MO AGO52 wk Hi/Date52 wk Low/Date
  HISTORICAL VOLATILITY Open Help
10 days26.51%7.47%10.92%41.76% - 02-Sep4.18% - 09-Jun
20 days18.97%6.77%11.39%32.46% - 16-Sep6.77% - 22-Jun
30 days16.22%9.01%10.17%28.44% - 30-Sep8.81% - 27-Apr
  IMPLIED VOLATILITY Open Help
IV Index call Open Help14.63%18.03%11.19%32.97% - 24-Aug9.72% - 17-Jul
IV Index put Open Help13.42%17.24%10.90%33.32% - 24-Aug9.56% - 17-Jul
IV Index mean Open Help14.02%17.64%11.04%33.14% - 24-Aug9.64% - 17-Jul
.
      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
.
Volatility chart
OPTIONS VOLUME, CONTRACTS
.
Options volume chart