Historical Volatility (Parkinson) (10-Day)

Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.

Glori Energy Inc (GLRI) had 10-Day Historical Volatility (Parkinson) of 1.4606 for 2016-09-29.

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Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2016-09-29

Volatility Metrics
Historical Volatility (Close-to-Close)	1.0366
Historical Volatility (Parkinson)	1.4606
Implied Volatility (Calls)	--
Implied Volatility (Puts)	--
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--