Forex robot yahoo answers dubai
At the expiry time, the trade automatically closes. Some brokers allow you to close early but you will exit your option at a percentage of the expected return. Similarly, some brokers allow traders to delay the expiry time to the next expiry time.
This is called rollover and is only possible if traders increase their investment by a certain percentage. In forex trading, users can take trades lasting from one second to many months, since they can open and close the trade whenever they feel like it.