The seller of option trading needs to pay the deposit, and the buyer does not need to pay the deposit, but only needs to pay the royalty. After paying a certain royalty to the seller, the buyer of the option can exercise the right to buy or sell the underlying assets within the agreed time limit, or give up exercising the right. When the buyer chooses to exercise his rights, the seller must perform the contract.

Because of the nonlinear characteristics of option profit and loss, options and futures can construct very rich combinations, many of which have the function of risk hedging and should enjoy margin exemption. Exchanges that adopt the traditional model of option margin usually have some fixed portfolios that can enjoy margin exemption.

Extended data:

The charging standard shall be the higher of the following two:

1, option contract settlement price * trading unit of the underlying futures contract+trading margin of the underlying futures contract-half of the imaginary value of the option contract.

2. Option contract settlement price * trading unit of the underlying futures contract+half of the trading margin of the underlying futures contract.

Where: imaginary value of call option contract =Max (exercise price-settlement price of the underlying futures contract, 0)* unit of the underlying futures contract; Virtual value of put option =Max (settlement price of underlying futures contract-exercise price, 0)* trading unit of underlying futures contract.

Therefore, the seller needs to pay the deposit to the exchange, and the buyer does not need to pay the deposit.

Baidu Encyclopedia-Option Margin