Options are mainly composed of the following factors: ① strike price (also called strike price, strike price). The buying and selling price of the subject matter specified in advance when the buyer of the option exercises his rights. Royalties. Option price paid by the option buyer, that is, the fee paid by the buyer to the option seller for obtaining the option. ③ Performance bond. Option sellers must deposit performance bonds, ④ call options and put options on the exchange. Call option refers to the right to buy a certain number of subject matter at the execution price within the validity period of the option contract; Put option refers to the right to sell the subject matter. When the option buyer expects the target price to exceed the strike price, he will buy a call option, and vice versa.

The margin of option requires the seller to pay the performance bond, and the premium of option is the option price paid by the buyer of option to the seller of option. They are different concepts.

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