How can I add a leg to an option order in TWS?

Question

Accepted Answer

Although you cannot add a leg to an active order to make it a combo, you can build a combo in many different ways within TWS. The easiest way to create an option combo is by utilizing the Strategy Builder tool.

Mosaic:

Select Trading Tools followed by Option Chains from the right click menu and click the Strategy Builder button in the bottom right corner.
Click the option that you want to trade from the Option Chains.
Click the "Advanced" button towards the bottom of the panel and click the "Stock Leg" button. Once your option and stock have been added, use the order row to set your order parameters.
Click Submit to preview your order and Transmit when ready.

Classic TWS:

Select Trading Tools followed by Option Trader and click the Strategy Builder tab.
Click the option that you want to trade from the Option Chains.
Click the "Add Stock" button beneath the "Strategy Builder" tab.
Set your order parameters.
Click the Transmit button on the order row.

Additional Information

Strategy Builder our Users' Guide.
Entering Covered Calls and Buy Writes in TWS in our Short Video.