它们的数学模型依赖于过去的交易规律，在其它证券价格变化(例如下跌)时，预测某种证券未来的表现。
Their mathematical models rely on past trading patterns to predict how particular securities will perform in the future if other securities, say, fall in price.
当一个普通人听说“资产支持证券”这样的专业名词时，他很可能把它当作某种建立在次级债虚弱基础上的疯狂的结构产品。
When the average person hears the term "asset-backed securities" he may well think of some of the crazier structures built on the rickety base of subprime mortgages.
ETFs是跟踪某种特殊指数进展的上市证券。它的费用通常不到百分之一。
ETFs are quoted securities that track a particular index, for a fee that is normally just a fraction of a percentage point.
包括各种权证在内，还存在着各种衍生的金融工具合约，它们与未来某天的证券价格、利率或汇率保持着某种联系。
As well as claims there are also derivative instruments-contracts relating to the prices of securities, interest rates or foreign exchange rates at some date in the future.
流动性是证券市场的重要属性，是由于某种原因交易者买或卖股票的意愿。
Liquidity is the important attribute of security market, is the wishes that the traders buy or sell stocks because of certain kind reason.
此外，美国的体制还允许在某种有价证券的保险商数量增加的时候降低资金量，反映出一种多样化有价证券的好处。
In addition, the U. S. system allows reductions in capital as the number of issuers in a portfolio increases, reflecting the benefit of a diversified portfolio.
此外，美国的体制还允许在某种有价证券的保险商数量增加的时候降低资金量，反映出一种多样化有价证券的好处。
In addition, the U. S. system allows reductions in capital as the number of issuers in a portfolio increases, reflecting the benefit of a diversified portfolio.
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