Options are contracts giving the purchaser the right to buy or sell a security, such as stocks, at a fixed price within a specific period of time.期权合同给买方有权买进或卖出的安全，如股票，在一个固定的价格在一个具体的时间。

Since the option gives the buyer a right and the seller an obligation, the buyer has received something of value and must provide the seller with a fee called an option premium.由于选项给买方的权利和卖方的义务，买方已收到有价值的东西，并必须向卖方提供与费用称为期权溢价。

For the option purchaser (also called the holder), the option:对于选择购买（也称为持有人） ，选择：

• offers the right (but imposes no obligation),提供正确的（但并没有义务） ，
  • to buy (call option) or sell (put option)购买（看涨期权）或卖出（看跌期权）
  • a specific quantity (eg 1 contract= 100 shares)一个具体的数量（如一日合同= 100股）
  • of a given financial underlying (eg shares)对某一金融基本（如股票）
  • at an agreed price (exercise or strike price), or calculable value.按商定的价格（行使价） ，或可计算价值。 on one or more call dates在一个或多个呼叫日期
• in exchange for a premium (option price).以换取溢价（期权价格） 。

The option seller (option writer) has an obligation to fulfill the contract if the option holder exercises the option.选择卖方（选项作家）有义务履行合同，如果持有人选择行使选择。 In return, the option seller receives the option price or premium.作为回报，选择卖方收到期权价格或溢价。
The risk for the option holder is limited: he cannot lose more than the premium paid as he can abandon the option.的风险持有人的选择是有限的：他不能失去多付的保险费，他可以放弃这一选择。 The potential gain is theoretically unlimited.潜在的收益是理论上无限的。

Continue learning more about options by reading the articles below.继续学习更多的选择阅读下面的文章。