但是，当潮头逆转时，由于无法判断组合另一半的风险以及其对冲把握，经济人们需要更多的资金安全保证。
But when the tide turned, its brokers wanted more security, as they could not judge the risk of its pairings and its hedges.
用这样的组合不仅能剩去对冲基金手续费，还规避了可能会购买管理失当的基金的风险，例如Amaranth公司，它在九月份损失掉自身价值的65%。
Such portfolios would not only avoid hedge-fund fees, but would also escape the risk of backing a mismanaged fund, such as Amaranth, which lost 65% of its value in September.
这部分是由于突然违约的风险存在于机构的交易组合内，因此难以进行对冲。
This is in part because exposures to sudden defaults are embedded in firms' trading portfolios and, therefore, are difficult to hedge.
从分析CAPM(资本资产定价模型)入手，提出了用股票指数期货来对冲股票组合风险的一种方法。
Starting from CAPM (Capital Assets Pricing Model) analysis, a new method for hedging portfolio risk with stock index futures is proposed.
外显示样品返回和在其他章节的风险投资组合对冲的MS -催化裂解-GARCH模型的银行具有更好的性能使用。
Out-of-sample returns and risks in other sections show that portfolio hedging MS-DCC-GARCH model used by bank has better performance.
采用这种对冲方法，可转移市场风险，仅使对冲者股票组合与市场有关的部分收益暴露于市场风险当中。
The method can be used to transfer market risks and expose the stock package of the hedger and partial profit related to market to the market risk.
为有效控制长寿风险，可以利用保单条款控制风险、利用产品组合“对冲”风险、利用再保险分散风险、风险证券化以及开发金融衍生工具对冲风险。
In order to effectively manage longevity risk, we can use many methods such as policy term, product portfolio, reinsurance, longevity bond and financial derivatives, to control and prerent the risk.
为有效控制长寿风险，可以利用保单条款控制风险、利用产品组合“对冲”风险、利用再保险分散风险、风险证券化以及开发金融衍生工具对冲风险。
In order to effectively manage longevity risk, we can use many methods such as policy term, product portfolio, reinsurance, longevity bond and financial derivatives, to control and prerent the risk.
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