Indices were created so investors could have a sense of how the overall market is performing, and market value-weighted indices do this very well.

引入指数的概念是为了使投资人对整体市场有大概的认识，依据市值权重的指数在这方面表现非常良好。

youdao

Only up to a point. Conventional index-tracking has a logical advantage on its side: a value-weighted index represents, by definition, the performance of all investors.

只有达到这么一点，传统的指数跟踪在这方面有一个逻辑优势：按照定义，一个以价值为权重的指数代表所有投资者的业绩。

youdao

The simplicity of a value-weighted index has to be replaced by a set of complex rules.

简单的市值加权指数已经被一系列复杂的规则所代替。

youdao

We think the Fed underestimates this linkage, in part by using the trade-weighted value of the dollar rather than the absolute value (the trade-weighted dollar mixes together changes in the dollar with changes in the value of foreign currencies).

FORBES: Third Quarter Strength, Stagflation Ahead

The pound's trade-weighted value rose by more than 20% between August 1996 and August 1997.

ECONOMIST: The economy

Sterling has lost 15% of its trade-weighted value over the past year, and 5% over the past month.

ECONOMIST: Britain's economy