研究表明巨无霸指数追踪的购买力平价率与更加先进的方法计算出的购买力平价率相当接近。

Studies suggest that the Big Mac index fairly closely tracks the purchasing-power-parity rates calculated by more sophisticated methods.

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但是贝塔可以通过指数追踪基金以很低的成本取得，那为什么还要付给对冲基金如此高昂的价格呢？

But beta can be obtained at very low cost via index-tracking funds. Why pay hedge-fund prices?

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但是随着ETFs和指数追踪共同基金的资产不断壮大，这个行业的另一部分似乎也开始以更快的速度迅速成长。

But as fast as the assets of ETFs and index-tracking mutual funds are growing, another section of the industry seems to be flourishing even faster.

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