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| 无成本期权 | |||
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| 零成本期权 (又称"无实际交易价格期权"，即投资者通过买人一份看涨期权、卖岀一份看跌期权所形成的投资组合方式。对于投资者来说,这种组合方式实质上是一种无成本的投资组合) | |||
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