Set DefaultQuantity using dollar amount

[nysetrader]

I use a strategy on a stock list. I need to set position quantity on each stock using dollar amount. For example each position size should be (20000$/stock price) rounded to nearest hundred. How can I do it?

Can I get information about stock on which strategy is used from Initialize method to use code like this:

DefaultQuantity = RoundToHundreds(20000/stock price);

?

[NinjaTrader_Joydeep]

Hello nysetrader,
Thanks for writing in and I am happy to assist you.
You can write a code as shown below to round to nearest 100;

DefaultQuantity = (int)((20000 / pr) / 100) * 100;

Please let me know if I can assist you any further.

[nysetrader]

Thank you.
But actually the question is how to get price of the stock?
In your code I need to initialize "pr" with stock price value and I can't find how to do it.

[NinjaTrader_Joydeep]

Hello nysetrader,
Sorry for the confusion. pr will be the price of the stock.

DefaultQuantity = (int)((20000 / pr) / 100) * 100; // pr= stock price

Also, we recommend to use the OnStartUp event to calculate the position size and not at Initialize. http://www.ninjatrader.com/support/h...?onstartup.htm

Please let me know if I can assist you any further.

[koganam]

Thank you.
But actually the question is how to get price of the stock?
In your code I need to initialize "pr" with stock price value and I can't find how to do it.

If COBC is false, then the price of the stock at any time is Close[0]; if COBC is true, you will have to use OnMarketDate() to get the exact price of the stock at any given time, as Close[0] will just be the price at which the last bar closed, which is very unlikely to be the price at any given time.

[NinjaTrader_Joydeep]

Hello nysetrader,
Since you are accessing it once during startup please use this code.

protected override void OnStartUp()
{
    DefaultQuantity = (int)((20000 / BarsArray[0].LastPrice) / 100) * 100;
}

Please let me know if I can assist you any further.