PositionEventArgs and nested Position property differ

[xcondor]

The entry was long, then I hit the Closse button, or a Sell Mkt button matching the same quantity, and this code gives me conflicting values:

void OnPositionUpdate(object sender, PositionEventArgs e){
	try{
		_Dispatcher.InvokeAsync(() => {
			Print(string.Format("e.MarketPosition: {0}", e.MarketPosition));
			Print(string.Format("e.Position.MarketPosition: {0}", e.Position.MarketPosition));
		});
	}catch (Exception error){ _Dispatcher.InvokeAsync(() => Print(error.ToString())); }
}

Shouldn't these two values be the same? Output:

e.MarketPosition: Flat
e.Position.MarketPosition: Long

Why are the properties of the nested Position member of the PositionEventArgs instance different.

[NinjaTrader_Jim]

Hello xcondor,

Thanks for your inquiry.

Considering the help guide documentation for Account.PositionUpdate suggests to use PositionEventArgs.MarketPosition and the result is what we would expect, I would suggest moving forward with e.MarketPosition.

Nonetheless, since there is not any clear documentation on PositionEventArgs and expected usage, I am consulting with Product Management on the matter.

I'll update this post as more information becomes available.

[xcondor]

Nonetheless, since there is not any clear documentation on PositionEventArgs and expected usage, I am consulting with Product Management on the matter.

It appears that e.Position is the position from BEFORE the update event fired.

[NinjaTrader_Jim]

Hello xcondor,

Position.MarketPosition is the position that gets added or removed. If we add a print for e.ToString(), we can see the Add and Remove operations.

instrument='ES 06-18' account='Sim101' avgPrice=2671.75 quantity=1 marketPosition=Long operation=Add
e.MarketPosition: Long
e.Position.MarketPosition: Long

instrument='ES 06-18' account='Sim101' avgPrice=0 quantity=0 marketPosition=Flat operation=Remove
e.MarketPosition: Flat
e.Position.MarketPosition: Long

Upon entering with a Buy Market, we see the current MarketPosition read as long, and an operation of adding a long Position.MarketPosition is seen.

Upon exiting with a Sell Market, we see the current MarketPosition read as flat, and an operation of removing a long Position.MarketPosition is seen.

If you have any additional questions, please don't hesitate to ask.