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 days55.26%73.95%59.77%119.67% - 24-Mar4.09% - 19-Nov
20 days85.93%96.31%44.49%97.90% - 27-Mar4.97% - 19-Nov
30 days85.13%82.77%38.19%85.87% - 08-Apr5.56% - 27-Nov
  IMPLIED VOLATILITY Open Help
IV Index call Open Help37.07%46.78%43.40%77.48% - 16-Mar8.79% - 16-Dec
IV Index put Open Help36.81%45.69%42.94%76.81% - 16-Mar9.00% - 16-Dec
IV Index mean Open Help36.94%46.23%43.17%77.15% - 16-Mar8.89% - 16-Dec
.
      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