Position Size Based off a Bar on a Chart

[trader-ap]

How could I write the code for the following type of functionality to trade US Equities with fixed dollar Risk Amount $R per trade (e.g. $100 Risk Per Trade)

1. Select any bar on the chart using right mouse click, not just last or current bar

2. Display an additional right mouse custom menu and submenu items e.g. menu item might say "Position Size By Bar" and Sub menu items might be "Short Limit", "Long Limit", "Stop Short Market", "Stop Long Market"

3. Sub menu item would calculate the position (share) size based on predefined $R value. Position Size = $R / (high - low) and then send the appropriate order type (e.g. Short Limit, Stop Short Market, Long Limit, Stop Long Market) based on the sub menu selection and also using the high or low of the selected bar for the entry price.

4. The order would be managed with an ATM. The Stop order would be based on the high or low of the bar depending on short or long. The profit targets would be defined by the R e.g. 50% of position at 0.7R, followed by 25% at 1.5R and 25% at 2R

5. Also would like to be able to have Auto Break Even on Stop Order based on an R value in favour of the trade e.g. price reached 0.5R

[NinjaTrader_ChelseaB]

Hello trader-ap,

The mouse interaction and context menu would require using undocumented code to achieve.
Below I am providing any resources I am able.

Adding to the right-click context menu.

https://ninjatrader.com/support/forum/forum/historical-beta-archive/version-8-beta/80626-add-items-to-chart-menu?p=702007#post702007

Converting mouse click coordinates to price and time values.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/96421-draw-dot-from-indicator-owner-problem?p=792624#post792624

There is an RSquared indicator.

https://ninjatrader.com/support/helpGuides/nt8/r_squared.htm

However, if this is not the calculation you are after, you would need to custom write the logic for your calculation.

Regarding submitting an order with an Atm Strategy, this can be done with AtmStrategyCreate().
Included with NinjaTrader is the SampleATMStrategy which demonstrates.

https://ninjatrader.com/support/helpGuides/nt8/atmstrategycreate.htm

Atm strategies are based on a template with preset tick or percent distances for the stop and target.

If you are not wanting to use the template, and you want to use custom calculations for the stop and target prices, then don't use Atm Strategies. Just use normal NinjaScript Strategy methods, calculate the price, and submit orders with those prices.

Below is a link to an example of dynamically changing a stop price.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/platform-technical-support-aa/97419-priceos-cs-expecting?p=802269#post802269