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That's got the lowest possible standard deviation of expected return and that's 25% stocks and 75% bonds with this sample period.
这个组合预期回报的标准差最小,在这一点上，投资组合,由25%的股票和75%的债券构成。
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The pink line here is the efficient portfolio frontier when we have only stocks and bonds to invest.
这条粉色曲线就是有效边界,这个投资组合只包括了股票和债券。
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If you read his Pioneering Portfolio Management on the syllabus, he really has a preference for equities.
如果你阅读他的著作《开拓投资组合的管理》的摘要,他确实对股票有偏好。
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The pink line takes two assets, one is stocks and the other is bonds, actually government bonds.
粉色线包含两种资产的投资组合，一个股票，另一个是债券，实际上是政府债券。
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What they do is they're pricing a portfolio up here and they keep substituting in new ones.
他们的工作是为一个投资组合定价,不停的用新股票进行替代
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This is a portfolio, which has all oil and stocks and it has no bonds.
这个投资组合，包括有石油，股票，没有债券。
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What this is is the price of a portfolio of shares in U.S. companies.
这是美国公司的股票投资组合的价格
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But beyond that, if you were confined to just stocks and bonds, it would be a matter of taste where along this frontier you would be.
进一步，若仅限于投资股票和债券的组合，选择哪个组合,取决于个人的兴趣。
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What you could do is, say, borrow $.50 on your $1 and put $1.50 into a portfolio, which consisted of 9% oil, 27% stocks, and 64% bonds.
你所做的就是，这么说吧，你用手上的1美元借来了50美分1,然后以这1。5美元购买投资组合，其中包含9%的石油，27%的股票和64%的债券。
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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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For him, the optimal portfolio should be very heavily into stocks.
以他的计算结果，最佳投资组合应该是大量投资股票。
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If you agree with my estimates, then you should do this as an investor, you should hold only some mixture of this tangency portfolio, which is 9% oil, 27% stocks, and 64% bonds.
如果你赞同我的估计值，那么作为一个投资者的话你应该这么做，你应该只持有,符合这个切线投资组合比例的投资，即9%的石油，27%的股票，和64%的债券。
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So, for example, at an annual expected return of 12% if I have a portfolio of stocks, bonds, and oil I can get a standard deviation of something like 8% on my portfolio.
例如，在年预期收益12%的情况下%,我有股票，债券和石油的投资组合,在这个组合里,我的投资组合可以取到8%的标准差。
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If we're all holding the same portfolio, that has to be the total, so that would mean that 9% of all wealth is oil, 9% of all--is oil 27% of all wealth is stocks, and 64% is bonds.
如果我们全都持有相同投资组合，总的投资组合就是如此，那就意味着9%的资产投资石油，市场总体的投资组合就是9%是石油,27%投资股票以及64%投资债券。
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You can also go up here, you can go beyond 100% stocks, you can have 150% stocks in your portfolio.
你也可以往上看，You，can，see–,可以取到超过100%的股票，在投资组合里你可拥有150%的股票。
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