The daily price limit of different commodity options can be calculated in different ways. Generally speaking, the daily limit price is calculated according to the closing price and fluctuation range of the previous trading day. Specifically, the daily limit is usually set by the exchange. For example, the daily limit of the domestic commodity options market is 10%.
Take the Shanghai gold option contract of China Futures Exchange as an example. The fluctuation range of this contract is 65,438+00%. Assuming that the closing price of the previous trading day was 350 yuan per gram, the daily limit price of that day was 385 yuan per gram. If the contract price reaches or exceeds 385 yuan in the day's trading, the contract will enter the daily limit and the trading will continue until the next trading day.
It should be noted that the ceiling price of commodity options is calculated according to certain rules, but the market transaction price is still affected by many factors such as market supply and demand, investors' trading behavior and so on. Therefore, in actual transactions, the price in commodity options may exceed or fluctuate around the daily limit price.