另一个方法是通过套期保值。

The other way is through hedging.

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最后，讨论期权套期保值策略。

We also discuss hedging strategy of option.

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应用套期保值是一种有效方法。

The application of Hedging is an effective method.

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套期保值是我国引进股指期货初衷。

Hedging is our intention to introduce stock index futures.

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市场上可以买到的套期保值已经涨价。

Those hedges that are available have become much more expensive.

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套期保值的平均水平，因此百分之五十。

The average hedging level is therefore 50 per cent.

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第二章基于单品种套期保值优化模型研究。

The second chapter is the research on the optimal model of the single hedging.

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也可以利用期货进行套期保值了利率风险。

May also use futures to hedge out interest rate risk.

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我们叫它套期保值。

We call it hedging.

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如何确定套期保值的比率是套期保值的核心问题。

How to give the hedge ratio is the core problem.

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套期保值者有责任注意外的样品性能，但没有样品性能已经发生了。

Hedgers are liable to pay attention to out-of-sample performance but not in-sample performance already occurred.

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套期保值者有责任注意外的样品性能，但没有样品性能已经发生了。

Hedgers are liable to pay attention to out-of-sample performance but not in-sample performance already occurred.

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