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 days16.70%28.08%10.87%29.01% - 31-Oct4.23% - 25-Jun
20 days20.94%21.39%9.80%26.46% - 20-Nov6.35% - 08-Jan
30 days18.17%18.17%9.43%24.13% - 15-Feb8.68% - 08-Jan
  IMPLIED VOLATILITY Open Help
IV Index call Open Help15.60%18.05%20.92%26.99% - 08-Oct13.88% - 15-Nov
IV Index put Open Help15.39%17.30%20.26%26.95% - 18-Oct13.79% - 20-Dec
IV Index mean Open Help15.49%17.68%20.59%26.90% - 08-Oct13.95% - 20-Dec
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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