Symbol:    
SPDR S&P 500 ETF Trust 
Options Root:  Open Help    SPY  
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Current1 WK AGO1 MO AGO52 wk Hi/Date52 wk Low/Date
  HISTORICAL VOLATILITY Open Help
10 days23.53%20.53%14.29%113.50% - 24-Mar3.97% - 19-Nov
20 days30.43%28.74%19.63%94.25% - 27-Mar4.75% - 19-Nov
30 days25.71%26.13%23.42%82.96% - 08-Apr5.49% - 27-Nov
  IMPLIED VOLATILITY Open Help
IV Index call Open Help22.39%26.55%22.17%76.69% - 16-Mar8.89% - 16-Dec
IV Index put Open Help22.23%26.52%22.09%76.57% - 16-Mar8.83% - 16-Dec
IV Index mean Open Help22.31%26.54%22.13%76.63% - 16-Mar8.86% - 16-Dec
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      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
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Volatility chart
OPTIONS VOLUME, CONTRACTS
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Options volume chart