How to modify a pending limit order

[cassb]

In a strategy, you can modify a pending ATM limit order with this command:

AtmStrategyChangeEntryOrder()

However, I cannot find help on how to modify the limit price on a non-ATM order that was placed with the EnterLongLimit() or EnterShortLimit() command.

Bryan

[NinjaTrader_Austin]

cassb, please try using IOrders, which allow you to change the price whenever you want.

// in variables
IOrder longEntryOrder;

OnBarUpdate()
{
    // place long limit order when conditions are met
    longEntryOrder = EnterLongLimit(...);

    // if still unfilled, change price
    longEntryOrder = EnterLongLimit(some new price);
}

This reference sample goes over some of the techniques necessary when using IOrders.

[cassb]

So what you're saying is that when you submit a second limit order, it will just update the price and not try to create another limit order?

[NinjaTrader_Austin]

cassb, yes, as long as all of the other parameters are the same, the order will just get an updated price:

if (CurrentBar == 100)
    entryOrder = EnterLongLimit(0, true, 1, 2, "enter long");
else if (CurrentBar == 105)
    entryOrder = EnterLongLimit(0, true, 1, 1.5, "enter long");

Order='NT-00000/Backtest' Name='enter long' State=PendingSubmit Instrument='ES 12-10' Action=Buy Limit price=2 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=Accepted Instrument='ES 12-10' Action=Buy Limit price=2 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=Working Instrument='ES 12-10' Action=Buy Limit price=2 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=PendingChange Instrument='ES 12-10' Action=Buy Limit price=1.5 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=Accepted Instrument='ES 12-10' Action=Buy Limit price=1.5 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=Working Instrument='ES 12-10' Action=Buy Limit price=1.5 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=PendingCancel Instrument='ES 12-10' Action=Buy Limit price=1.5 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'
Order='NT-00000/Backtest' Name='enter long' State=Cancelled Instrument='ES 12-10' Action=Buy Limit price=1.5 Stop price=0 Quantity=1 Strategy='OneOrder' Type=Limit Tif=Gtc Oco='' Filled=0 Fill price=0 Token='f9aadfb2583645d6955e5114a2553b74' Gtd='12/1/2099 12:00:00 AM'

[cassb]

OK, thanks Austin. That fact is not clear in the online help guide, then.

Bryan

[cassb]

Austin, I am playing with this idea of modifying pending orders, but it doesn't seem to be working how you described. Here is how the order is placed:

EntryOrder = EnterLongStop(0, true, 1, 701.2, "LimitLong");

Let's say you want to change the stop order to 700.5. All you do is enter this command and it will replace the previous limit stop order with a new one?

EntryOrder = EnterLongStop(0, true, 1, 700.5, "LimitLong");

It's not changing the order in the SuperDOM when do this though...

Bryan

[NinjaTrader_RyanM1]

Hi Brian,

Yes, this is how it should work. One thing you'll want to check is that the conditions for the first order are not evaluating true.


You can test a simple implementation of this without using IOrders if you want to get a handle on how it works. Use the following in a strategy with CalculateOnBarClose = false, and you should see the order updated as price changes.

if (Historical)
return;

EnterLongStop(Close[0] + TickSize * 10);