Symbol:    
AT&T Inc 
Options Root:  Open Help    T  
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Current1 WK AGO1 MO AGO52 wk Hi/Date52 wk Low/Date
  HISTORICAL VOLATILITY Open Help
10 days26.68%20.47%19.77%50.78% - 31-Oct4.23% - 25-Jun
20 days20.37%18.68%21.27%38.68% - 31-Oct11.41% - 08-Jul
30 days19.60%19.19%19.80%34.65% - 04-Dec12.15% - 08-Oct
  IMPLIED VOLATILITY Open Help
IV Index call Open Help18.91%17.53%17.49%38.08% - 24-Dec14.10% - 18-Mar
IV Index put Open Help19.24%18.13%17.47%37.83% - 24-Dec14.28% - 19-Mar
IV Index mean Open Help19.07%17.83%17.48%37.95% - 24-Dec14.30% - 18-Mar
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      T: 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