名词
中文翻译：被覆盖的看跌期权同义词
同义词：
['covered put option', 'covered call option']
例句：
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1. The company issued a covered call option to hedge against the drop in the stock price.
该公司发行了一个看跌期权，以对冲股价下跌的风险。
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2. The investor used a covered call option to lock in a profit before the stock price increased.
投资者使用一个看跌期权来锁定利润，在股票价格上涨之前。
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3. The strategy of using covered calls is often employed by hedge funds to manage risk.
使用看跌期权策略是基金管理风险时常用的一种方法。