1. Total Order Size (TOS) – the total number of shares the trader is willing to purchase (sell) as the price falls (increases);
2. Initial Component Size (ICS) – the number of shares to be purchased (sold) at the Starting Price;
3. Subsequent Component Size (SCS) – the additional number of shares to be purchased (sold) at each Price Increment (at successively lower prices in the case of a purchase and higher in the case of a sale). If a SCS is not entered, the ICS will be used for all component orders.
4. Starting Price (SP) – the price at which you are willing to purchase (sell) the Initial Component Size
5. Price Increment (PI) – in the case of a purchase (sale), this is the decrease (increase) in price at which each successive component order is to be executed.

1. TP = (((ICS/SCS) -1) * PI) + SP
2. BP = SP – (((TOS - ICS)/SCS) * PI

1. TOS = 4,000;
2. ICS = 1,000;
3. SCS = 500;
4. SP = $20.00
5. PI = $0.05

1. Profit taking orders – the Scale Trader may be set to send an offsetting order to take advantage of periodic price surges or if the trader has reached a specified profit objective. This feature may be enabled by checking the box titled “Create profit taking order” and specifying the Profit Offset. Using the example above and a Profit Offset of $1.00, once the ICS was filled at $20.00 and an SCS submitted at $19.95, two profit orders would also be submitted, one for 500 shares at $21.00 and another for 500 shares at $21.05. It should be noted that profit orders are scaled to the SCS regardless of the size of the ICS and that if the ICS > SCS then the profit order price is determined using the PI along with the Profit Offset. 
2. Restore size after taking profit – if using the profit taking orders feature, the trader can enable the repurchase of shares sold at a profit at the price they were originally bought at by checking the box titled “Restore size after taking profit”. This feature remains active whenever the price is within the range of TP + Profit Offset and BP. Using the example above, if order to sell 500 shares at $21.00 was executed this fill quantity would be put back into the original order at $20.00 and the order submitted at $19.95 would be cancelled.
3. Restart Scale Trader & Restart Scale Trader with Filled Component Size – these features allow traders using the profit taking order and restore size features to restart the algorithm if stopped, helping to resume the order starting from the point at which the scaled sequence left off.
4. Auto Price Adjustment – selecting this check box allows for an increase or decrease in the starting price automatically at stated time intervals (e.g., increase $0.01 every hour)
5. Scale Trader Page – provides a view of the real-time status of scale orders, including filled and total quantity, filled, remaining, and total value, and the percent filled for each scale. Accessible via the Page and then Create Scale Trader Page menu options.
6. View Scale Progress - right-click on the scale order line and select View Scale Progress. This will open a window displaying the complete scale price ladder, the Open/Filled component list for the parent scale order, and the Open/Filled component list for the child profit orders.

1. Products – any product offered by IB other than mutual funds (e.g., stocks, options, ETFs, bonds, futures, Forex);
2. Order Type - limit or relative (relative not offered for combination orders)
3. Time in Force – Day, Good-til-Cancel or Day-til-Cancel. May also specify if order is allowed to be filled outside of regular trading hours, if executions may be routed and executed during pre-open session and whether to ignore opening auction.

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Contents:

How to determine if a submitted order has a RTH restriction applied.

Changing Default Settings

Other Important Notes

How to determine if a submitted order has a RTH restriction applied.

Trader Workstation (TWS)

Orders restricted to RTH only will display a clock icon in the Time in Force (TIF) field.

Hold your mouse over the clock icon to display information regarding when the order can be filled.

Orders without a time restriction will either display no clock icon or will display the clock icon with an exclamation point over it to indicate that it will be active outside of the regular trading session.

Traders may change the RTH setting by clicking this field before the order has been transmitted.  From the dropdown that appears, check the box that says "Fill outside RTH".

IBKR Mobile

To check to see if your order is eligible to fill outside of regular trading hours, go to the Orders & Trades tab (iOS) or the Orders tab (Android) and tap on the order in question. If using the iOS app, there will be a line item stating if the order is eligible to fill outside of regular trading hours:

If using the Android app, there will be a line item for Time-in-force. Click the small arrow on the right side to expand the section. There will be a line item for Outside RTH with a toggle that will be set to ON (eligible to fill outside RTH) or OFF (not eligible to fill outside RTH).

Clients can set their order to fill outside regular trading hours through the IBKR Mobile Order Ticket. In both the iOS and Android versions of IBKR Mobile, the Order Ticket will have a line item where you can toggle Outside RTH on or off. Once you have made your election, fill out the remainder of the Order Ticket and submit when ready.

iOS:

Android:

Note:  The RTH restriction cannot be modified once an order has been transmitted.  In order to change the RTH restriction the submitted order must be canceled and a new order entered with the appropriate RTH selection.

Changing Default Settings

Trader Workstation (TWS)

Traders can adjust the default RTH setting in the TWS as follows;

1.  Select the Edit menu followed by Global Configuration at the top of the main TWS screen. 

2. On the left side of the window that appears, click the "+" next to the word Presets to expand the section.

2.  Next, select the product type (Stocks, Futures, etc.) by clicking on the word so that it is highlighted.

3.  In the Primary Order section, be sure the Order Type is set to LMT. (if MKT or STP is set as the default the RTH setting will not be applicable).

4.  In the Timing section, check the box that says "Allow order to be activated, triggered, or filled outside of regular trading hours".

5.  Click Apply and then OK at the bottom of the window.

6.  Orders that support modification of the RTH restriction (for the product selected in step #1) will be created with the new default applied.

IBKR Mobile

Traders can adjust the default RTH setting in IBKR Mobile (iOS or Android) as follows;

1. Tap the menu (More) button and select Configuration    
2. Look for the Cloud section and tap Trading Settings                 
3. Tap the Product that you wish to edit the Presets for                          
4. Tap the Timing line item                                                              
5. Toggle Outside RTH on or off. Once finished simply tap the back button to save your changes to the Cloud.                    

Other Important Notes:

* Traders unfamiliar with the Regular Trading Hours for a particular product may right click on the market data line and choose Contract Info followed by Description.  This window will list the Regular Trading Hours for the selected product.

* Forex, OTCBB, and Pink Sheet securities do not have a Regular Trading Hours designation as there is no centralized marketplace or primary exchange.  Traders should use caution when trading these products during the early and late sessions as orders will execute regardless of any default RTH restriction previously applied.

* Outside Regular Trading Hours for IBKR Pro accounts begins at 4:00 EST and lasts until market open, and restarts at market close until 20:00 EST. Outside Regular Trading Hours for IBKR Lite accounts begins at 7:00 EST and lasts until market open, and restarts at market close until 20:00 EST. Regular Trading Hours for both account types are 9:30-16:00 EST.

* For stocks, Market orders and Stop orders (which, when triggered, become Market orders) are only active from 09:30 until 16:00 EST (the Nyse's regular trading hours session). To have the order active in all sessions including the Premarket hours, Regular Trading Hours and the Aftermarket hours, you must use a Limit or Stop Limit type order and add the attribute "Allow Outside RTH". The same settings apply for CME/CBOT/NYMEX/COMEX Future contracts. The Nybot accepts Stop orders and converts them internally to "Stop with Protection" orders that are active for all available hours. A Future contract's RTH session is detailed in the contract's description window.