I tried to use volatility cone on nifty but unable to do so. A dialog box appears on option action software screen says failed to download data. How t
Thanks for writing to us.
Due to data non-availability, the chart is not loaded. We are working on the same and it will be rectified as early as possible.
You can try OptionsOracle, it is showing Volatility Cone perfectly.
Search in google “Options Oracle PASI”