An option is an option, which refers to the right to buy or sell a certain quantity of a certain commodity at a certain price at a certain time in the future. Option is a financial instrument based on futures, which gives the buyer the right to buy or sell the underlying assets. The holder of the option can choose the right to buy or not to buy, sell or not to sell within the time specified in the option, and can exercise or give up the right. The seller of the option has only the obligations specified by option contracts.
According to the rights of options, options include call options and put options. According to the delivery time of options, they are divided into American options, European options and Bermuda options. According to the subject matter of the option contract, there are stock options, stock index options, commodity options, interest rate options and foreign exchange options.