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 days20.19%17.38%14.27%39.50% - 09-May12.33% - 25-Nov
20 days17.77%15.86%15.40%35.11% - 18-May14.59% - 08-Mar
30 days16.63%16.65%16.35%32.23% - 03-Jun15.37% - 06-Mar
  IMPLIED VOLATILITY Open Help
IV Index call Open Help22.05%21.64%16.27%30.71% - 11-Oct14.75% - 04-Apr
IV Index put Open Help22.04%21.65%16.27%30.77% - 12-Oct14.75% - 04-Apr
IV Index mean Open Help22.05%21.65%16.27%30.74% - 11-Oct14.75% - 04-Apr
.
      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