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标题: I learned a way to make an equation simpler for pure allocation effect [打印本页]

作者: RoastBeef    时间: 2011-7-13 16:55     标题: I learned a way to make an equation simpler for pure allocation effect

I was looking at a question to calculate pure allocation effects for manager performance. The usual is to sum the following

(Manager weight - benchmark weight)(benchmark return - average return)

I solved the problem the following way

(manager weight - benchmark weight)(Benchmark return)

The average return will sum to zero since the numbers on the right side sum to zero anyways. I always learned this equation the Schweser way, but I just realized that you can make it much simpler using my method. Try it out and see if it works. Let me know your results.
作者: dyga    时间: 2011-7-13 16:55

This is true if you need effect for all sectors only. If the question is to calc effect for one sector I think CFAI prefers expression as in curriculum
作者: zwjy    时间: 2011-7-13 16:55

Good point




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