期权持有人通常买合约避免股票投资的价值。
Option holders commonly buy contracts to protect the value of a stock investment.
按照最大期权持有人的意愿，在到期时只有一个期权被行权。
Only one of these may be exercised, and this is chosen in the holder's favor at expiration.
期权持有人，通常是期权的购买者，有权利决定是否行使期权。
The party to whom an option grants rights, usually the purchaser.
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