It can be held for a long time, but you should pay attention to that all stock index futures have a delivery period.
On the delivery date, it will be automatically closed by the system.
This is not the same as gold foreign exchange. You can hold foreign exchange gold for one year.
Buy and sell dozens of times a second, or once or twice a year.
Trend analysis can't be explained clearly in one sentence. Stock index futures have a lot to do with the current economy in the United States.
If you are a novice, you can also apply for a simple simulation operation in the simulation column first.
Watch videos or basic study materials, so it may be easier for you to study with questions. Let's discuss other technical issues with each other.