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HI kevin,
im aware of that, but someone made a formula some time ago for me, in that
formula he manage to avoid the problems you mention, you dont actually need
the entire option chain if you put as parameter of that formula the strike
you want the iv for, as a matter of fact that a crucial part of the ratio
concept, you need the iv fdor the diferent strikes so you can compare all
the different ratios and choose the option you want to enter
Im aware of those services but they have 2 problems, first you cannot make
the ratio ui mentioned and cannot make an expert and second the data is
cool if you trade american markets, but there is a lot of poeple on this
list that doesnt
Bye
----- Original Message -----
From: "Kevin" <kevin_barry@xxxxxxxxxxxxxx>
To: <Metastockusers@xxxxxxxxxxxxxxx>
Sent: Wednesday, April 09, 2003 2:20 PM
Subject: [Metastockusers] Metastock IV??
> I have noticed a few posts recently suggesting that the Metastock Option
> Volatility indicator plots implied volatility. I suggest a little caution
> here. There is not sufficient data in stock end-of-day prices to calculate
> the implied volatility of the options on that stock. In order to do that,
> you would require the option prices for the complete chain. Also, bear in
> mind that options for different strike prices may well have different
> implied volatilities. Sometimes the difference is quite marked.
>
> The Option Volatility indicator can only be based upon some kind of
> historical volatility formula. Therefore, if you are comparing this to,
> say, the Fishback historical volatility indicator, which is based upon a
> linear regression calculation, you are comparing like to like and it will
> be of no use to you for options trading.
>
> In order to see 'historical' implied volatility, you will need to access a
> website that has all of that data stored. I think that OptionsXpress will
> let you chart 'historical' IV on particular stocks for free.
>
> Regards,
> Kevin
>
>
>
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>
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