Eurex Intraday Volatility Forecast

One thing that i didn't see is the accuracy of the tool, i don't know if deutsche börse tool has

It is a calculation of two standard deviations of the historical volatility projected forward.
 
I have used it, sold options outside the cone when set to two standard deviations. They are calculating historic volatility and then projecting a two standard deviation or whatever projection into the future.
i saw his video (
), telling about straddles, as i understood. He has a tool on metastock and a service on his website. I am looking better at his website
 
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