Suppose you could find 10,000 independent assets, then you could drive the uncertainty about the portfolio practically to 0.
假设你能找到一万项相互独立的资产,那么你就可以将这个投资组合的风险,降到几乎为零。
This is a special case, though, because I've assumed that the assets are independent of each other, which isn't usually the case.
这是一个特例,因为我假设了,这个投资组合里的资产是相互独立的,但现实中通常都不是这样的。
Now, I want to talk about forming a portfolio where the assets are not independent of each other, but are correlated with each other.
现在我要建立这样的一个投资组合,在这个组合里各项资产并不是相互独立的,而是相互关联的。
.. If you can find assets that all have-- that are all independent of each other, you can reduce the variance of the portfolio very far.
如果你能找到这样的一些资产-,一些相互独立的资产,就能很大程度上缩小这个投资组合的方差。
Suppose we had a lot of different stocks that we could put into a portfolio, and suppose they're all independent of each other-- that means there's no correlation.
假设我们现在有很多只不同的股票,可以放进我们的投资组合里,同时假设它们都是相互独立的-,也就是说它们之间没有相关性。
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