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Discrepancy between simulated trades and real trad
Last Activity 5/11/2023 2:59 AM
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calmger

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Subject : Discrepancy between simulated trades and real trad
Posted : 1/31/2016 10:02 PM
Post #35663

I started a real trading with Omnivest and noticed a big discrepancy between simulated (16) trades and real (8)trades.

I assume that these have to be identical otherwise nothing makes sense.

I attach two Excel files from Omnivest web sites for my account IB.

I would like to get an explanation.

[Edited by calmger on 1/31/2016 10:06 PM]

Attached file : Omnivest simulated trades.xlsx (17KB - 182 downloads)
Attached file : Omnivest real trades.xlsx (12KB - 182 downloads)

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Barry Cohen

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/1/2016 9:39 AM
Post #35664 - In reply to #35663

What 2 OmniVest pages are you comparing? Can you provide screenshots?
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calmger

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/1/2016 10:25 AM
Post #35665 - In reply to #35664

I took screenshots from Myomnivest account and trades pages. Parts of these pages are in my previous post in attached Excel files
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calmger

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/1/2016 10:35 AM
Post #35666 - In reply to #35665

I am sorry the file size was greater than 7000 Kb, so I could not attach screenshots. I will try to figure it out how to make them less.
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calmger

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/1/2016 10:41 AM
Post #35667 - In reply to #35666

I could attach screenshots.
Attached file : Myomnivest screenshots of account and trades pages.jpg (416KB - 184 downloads)

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Barry Cohen

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/1/2016 4:20 PM
Post #35668 - In reply to #35663

Thanks.

Simulated trades can change. They are always based on your current account settings & portfolios.

Your actual trades on your Trade page is your trade record & cannot change unless you do something like reset your account.

So let's say Monday morning AAPL is a new open order. When it executes it gets locked into your trade record. Let's say it closes out on Thursday. At this point you see the historical trade on the Trades page as well as a simulated trade on the Accounts page. But then you add an account setting filter or disable that portfolio & that change filters out that AAPL trade. Now the simulated trade is gone, but it remains on the Trades page.

Your Account Log shows that you've made several changes in the account as far as settings & portfolios being enabled/disabled. So your simulated trades & trade record will never match, which is very normal. If you absolutely want them to be equal you have to reset your account & never make any changes to that account going forward.

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calmger

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/1/2016 5:44 PM
Post #35670 - In reply to #35668

Thank you Barry.

I will reset the account and start from the beginning not changing any settings. Hopefully it will help.
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calmger

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/8/2016 10:57 PM
Post #35671 - In reply to #35670

I did not make any changes in settings. But the discrepancy between simulated trades for account and actual trades again appeared today on Feb 8.

Trading started on Feb 2 2016 and today is Feb 8 2016: one week.

Please can you provide any comments? In my understanding we should not have any discrepancy.

[Edited by calmger on 2/8/2016 11:03 PM]

Attached file : Trades Feb 8 2016.jpg (410KB - 183 downloads)
Attached file : Simulated Historical Positions Feb 8 2016 .jpg (339KB - 183 downloads)

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Jim Dean

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/9/2016 5:32 AM
Post #35672 - In reply to #35671

Please read Barry's writeup two posts ago. This has been explained many times since OVest was borne but it continues to trip people up.

There are different settings for simulated vs historical. If they differ *at all* then trade will be diff and the diff's will compound over time.

So, it should be everyone's understanding that simulated is simulated and historical is historical and the two normally will differ.
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Barry Cohen

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/9/2016 3:36 PM
Post #35673 - In reply to #35671

I forgot to mention something related to this. Your trade record (Trades page) uses a dynamic current balance value, so every day your current balance & buying power are updated & those determine your new trades & trade sizes for the next day.

The Simulated trades use a static current balance value. So while your actual current balance fluctuates up & down, the simulated balance remains static. This would cause the trades to start off the same & then slowly but surely be different. And once one difference occurs, you'll see a lot more.

So with that fact, I apologize, but I don't think it's even possible to get simulated trades to match with an ongoing trade record. The only chance might be to manually update your current balance to the same starting value every single evening. That might be ok for paper trading even though tedious, but certainly wouldn't work if you had the account connected to a broker.

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BrianD

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Subject : RE: Discrepancy between simulated trades and real
Posted : 2/12/2016 11:32 AM
Post #35674 - In reply to #35673

I've found that in an Account that is set to Trade=Yes, the Simulated and Historical trades track pretty close. Based on the issue defined in Barry's note, once in a while a trade will squeak in - I see it in the Historical trades; a trade or two that do not show in the Simulated trades. But it is infrequent; maybe once a month? (of course, based on your # TPM)

But, if you ever change the Trade=Yes Account's parameters, all correlation is off between Historical and Simulated.

As a best practice, I build 2 Accounts - one is for "Trade=Yes" (which I NEVER change) and the other Account is for playing around, if you will.

Net to me, if you ever change the "Trade=Yes" Account settings, you can never look back, so I leave it alone.
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