Before opening a covered position, it is necessary to submit a corresponding number of underlying securities, that is, locked operating securities, and the number of entrusted locks shall not be less than the number of underlying securities corresponding to the number of covered option contracts.

You need to find a brokerage firm and sign a tripartite depository agreement between you, the brokerage firm and the bank, so that you can bind the stock account with the bank account, and then you can transfer money from the designated bank account to the stock account.

Term account: An option defines the right of the buyer of the option to buy or sell a certain number of specific commodities or financial instruments at a predetermined price within an agreed period. Stock index option: refers to the option generated on the basis of stock index futures. In order to obtain the right to buy or sell a certain basic stock index at a certain price level in the future, the option purchaser pays the option fee to the option seller.