Symbol:    
SPDR S&P 500 ETF Trust 
Options Root:  Open Help    SPY  
.
Current1 WK AGO1 MO AGO52 wk Hi/Date52 wk Low/Date
  HISTORICAL VOLATILITY Open Help
10 days8.78%5.77%6.00%40.73% - 04-Jan3.97% - 19-Nov
20 days6.78%5.52%9.87%31.25% - 07-Jan4.75% - 19-Nov
30 days6.46%5.49%12.14%29.23% - 04-Jan5.49% - 27-Nov
  IMPLIED VOLATILITY Open Help
IV Index call Open Help12.92%9.83%10.40%32.24% - 24-Dec9.69% - 26-Nov
IV Index put Open Help12.88%9.80%10.33%30.89% - 24-Dec9.64% - 12-Apr
IV Index mean Open Help12.90%9.81%10.36%31.57% - 24-Dec9.68% - 26-Nov
.
      SPY: 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