trade qty based on account size.

[fingers]

I'd like my strategy to calculate a trade qty based on the AccountSize. ... https://ninjatrader.com/support/help...ccountsize.htm

do I need to set this manually at the start and also update its value as trading progresses?

[NinjaTrader_Gaby]

Hello fingers,

Thank you for your post.

Unfortunately, AccountSize property is not available in NinjaTrader 8. However, you can calculate this with custom logic.

Please see the forum post below:

https://forum.ninjatrader.com/forum/ninjatrader-8/platform-technical-support-aa/92321-strategy-feature-order-quantity-by-account-size-missing?p=775344#post775344

If you have any other questions, please let us know.

[fingers]

ok thanks, am I right that this is into add-on territory? but right now, from within the strategy, I can't get get an account balance on which to base trade qty?

[NinjaTrader_Gaby]

Hello,

Yes, this is through the Add On approach, but it can be used in any script type including a strategy.

[fingers]

again thanks for your help. Do you know if there are any samples that do something similar?

[NinjaTrader_Gaby]

Hello fingers,

We don't have any examples that demonstrate this specifically, but we do have an example that demonstrates using the Add On approach.

AddOnFramework - https://ninjatrader.com/support/help...t_overview.htm

Please let us know if we can assist further.

[fingers]

I think my question is too involved for this forum and clearly I need to put more effort in my end, fortunately I'm familiar with Visual Studio.

Thank you.

[fingers]

trying to base trading qty on account size and getting confused 1.when back testing, 2.when trading historically and 3.when trading real-time.

should I use:

protected override void OnAccountItemUpdate(Account account, AccountItem accountItem, double value)

with AccountItem.BuyingPower

[NinjaTrader_Gaby]

Hello,

Yes, use .Get() to get the account's buying power (in realtime).

Account.Get(AccountItem.BuyingPower, Currency.UsDollar)

.Get() - https://ninjatrader.com/support/helpGuides/nt8/get.htm

Unfortunately, there is no historical account information available to access in NinjaScript so you would not be able to get the historical buying power of an account.

[fingers]

is this a reasonable conclusion?

• in backtest with trade size based on account size - the strategy script needs an initial "backtest account size" defined and each trade PnL cumulatively +/- the "backtest account size" which is then used to calculate the next "backtest trade size".
• in real-time with trade size based on account size - the strategy script (via an add-on) uses Get(AccountItem.CashValue, Currency.UsDollar) to get the actual SIM101 or live account size which is then used to calculate the next trade size.
• in historical with trade size based on account size ... same as backtest?

[NinjaTrader_Gaby]

Hello,

Yes, since there is no there is no historical account information available to access, you can calculate it that way for backtest/historical using an pre-defined "backtest account size".

Please let me know if you have any other questions.

[fingers]

one last question ...

can I detect if the code is running in backtest mode?

[NinjaTrader_Gaby]

Hello,

Yes, you can use IsInStrategyAnalyzer.

https://ninjatrader.com/support/help...egyanalyer.htm