Not less than 10. According to the query of Oriental Fortune.com, investors need to have at least half a year's trading experience in the securities market, as well as experience in margin trading or financial futures trading. When applying for opening an option account, investors need to keep the average daily assets of the account above 500,000 in the first 20 trading days. If the above two conditions are met, you can apply to the brokerage firm for mold opening, then complete the required ten simulated transactions, and then you can go to the brokerage business department to take the option exam. After passing, they can open an option account.