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Demo and live account in parallel


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Demo and live account in parallel

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  #1 (permalink)
confusedxx
Switzerland
 
 
Posts: 9 since Feb 2014
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Hi guys,

I am running a live account with TradeStation trading the Larry williams Oil Strategy. At the same time, I have developed some of my own strategies and would like to test and optimize them on TradeStation. Is there a suggested method to log into a demo account and test at the same time that I have the live account running?

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 Big Mike 
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confusedxx View Post
Hi guys,

I am running a live account with TradeStation trading the Larry williams Oil Strategy. At the same time, I have developed some of my own strategies and would like to test and optimize them on TradeStation. Is there a suggested method to log into a demo account and test at the same time that I have the live account running?

I bet @kevinkdog can advise.

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 kevinkdog   is a Vendor
 
 
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confusedxx View Post
Hi guys,

I am running a live account with TradeStation trading the Larry williams Oil Strategy. At the same time, I have developed some of my own strategies and would like to test and optimize them on TradeStation. Is there a suggested method to log into a demo account and test at the same time that I have the live account running?

You can test and optimize at the same time you are running live, just open a new chart and have at it.

You can't run demo and live at the same time, unless you have two platform logins.

Demo is not good at all for evaluating a strategy, anyway.

If you still have questions, please ask.

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 ericbrown 
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kevinkdog View Post
You can test and optimize at the same time you are running live, just open a new chart and have at it.

You can't run demo and live at the same time, unless you have two platform logins.

Demo is not good at all for evaluating a strategy, anyway.

If you still have questions, please ask.

Why would Tradestation 'demo' not be good for eval? It's the same data isn't it? Why would there be a difference?

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 tturner86 
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ericbrown View Post
Why would Tradestation 'demo' not be good for eval? It's the same data isn't it? Why would there be a difference?

FILLS. Demo will not fill the orders like Live will.

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 ericbrown 
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tturner86 View Post
FILLS. Demo will not fill the orders like Live will.

Ok....but if you are backtesting on the TS live account, you are still using 'sim' for fills, right?

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 kevinkdog   is a Vendor
 
 
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ericbrown View Post
Ok....but if you are backtesting on the TS live account, you are still using 'sim' for fills, right?

Backtest and sim are 2 different animals.

One example: you can backtest with a setting "fill limit orders only when price is exceeded" (as opposed to "fill if touched")

So if you backtest with this setting, you won't get limit fills unless your price is exceeded. Now say you run this strategy "live" without adjusting any settings. Going forward it will show limit orders filled as soon as the price is touched. But, if you refresh the chart, the trade will disappear since the backtest rules now apply.

I probably should not have brought up this issue, since the OPs question wasn't directly about this, but I get scared when it sounds like people are using SIM in Tradestation to evaluate a strategy. SIM is good for order testing, etc., but not for P/L evaluation.

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 Big Mike 
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A great webinar by @kevinkdog that covers some of these basics:



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 ericbrown 
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kevinkdog View Post
Backtest and sim are 2 different animals.

One example: you can backtest with a setting "fill limit orders only when price is exceeded" (as opposed to "fill if touched")

So if you backtest with this setting, you won't get limit fills unless your price is exceeded. Now say you run this strategy "live" without adjusting any settings. Going forward it will show limit orders filled as soon as the price is touched. But, if you refresh the chart, the trade will disappear since the backtest rules now apply.

I probably should not have brought up this issue, since the OPs question wasn't directly about this, but I get scared when it sounds like people are using SIM in Tradestation to evaluate a strategy. SIM is good for order testing, etc., but not for P/L evaluation.

Thanks...makes sense. Personally, I see this being more of an issue with backtesting process, rules and rather than TS 'live' vs 'demo' mode and one being better/worse than another. That said...i mis-read your original comment to mean the TS demo account was 'bad' in some way due to data differences, etc.

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confusedxx
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Thanks guys

I was actually referring to back testing to ensure code executed as expected and to see what I could possibly expect ad p/l given the markets I was planning to use. Following successful back testing, I wanted to run in sim mode. I do not want to risk real money with a newly crafted idea and strategy until seeing how it performs for a month or two in sim mode. I need to read the link provided above on this topic to learn.

How do you suggest I "live test" a strategy with live market data but on a simulated account ( basically paper trade)? I realize slippage and touching vs exceeding a price is a point of consideration, but I really want to test out my ideas on the best possible way in a live but simulated trading account. Finally, it seems that is also not possible with TradeStation. Meaning I cannot run my live strategies with real money and also use a simulated account in parallel? Any suggestions for how to better tackle this

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