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Re: [amibroker] Backtest - %exposure



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Terry,
 
Thanks... your comments led me to the solution.
 
I was using 1 contract only, regardless of accumulated cash... so only a small part of equity was being exposed. 
----- Original Message -----
From: Terry
Sent: Wednesday, December 28, 2005 7:45 PM
Subject: RE: [amibroker] Backtest - %exposure

Some ideas:

 

Futures is affected by the margin deposit, $3000 for NQ for example, so it invests in $3000 chunks. This is likely not all your cash so the other cash is not in the market and affects exposure. However, this doesn't even come close to your 10% exposure value. Do you have any stops? Do you have a PositionSize somewhere using less than -100? (If not, I think you should because in my testing the leverage of futures will bankrupt any system I have ever seen if you trade all your money because you can easily lose more than 100% on a single trade.)

--

Terry

-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Ara Kaloustian
Sent: Wednesday, December 28, 2005 15:49
To: AB-Main
Subject: [amibroker] Backtest - %exposure

 

Doing some testing with futures (1 min data).

 

Am long or short all the time. The data for closing one position and opening another looks fine (done at same time).

 

Problem: The % exposure in summary statistics seems incorrect. It is 10.20%.  I would expect that it should be 100%. This of course messes up Annual return and RAR.

 

Anyone experience this?

 

Ara




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