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Of course, if think about it, as a community, the investment community is going to lose from security selection decisions.
其实很好理解,想想看,投资者群体可能,由于证券选择决策失误而蒙受损失
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If you're comparing two portfolios with the same expected return, then you want the one with the lower variance.
比较两个有相同预期收益率的投资组合时，你会选择方差小的那一个。
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You can either have what's called an indexed portfolio, or a managed portfolio.
你可以选择指,数化资产组合，或者代管投资组合。
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The Morningstar study is incredibly damning in terms of the market timing abilities of individual investors.
晨星公司这一研究结果,谴责了个体投资者的市场时机选择能力
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You know that buying gold coins from some newspaper ad is not a smart investment, but they know that there will be people out there.
你们明白购买报纸广告上宣传的金币,是一种不明智的投资选择,但销售商知道总会有人上钩
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Let's assume that you've won the lottery, and have serious money that you foolishly wish to invest in the stock market There are two basic strategies to choose from in investing.
让我们假设你赢了彩票，然后又一大笔钱,而你很傻的想要投资到股票中去,有两个投资策略,可以选择。
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Moreover, very significantly, they are limited in what kind of investors they can take.
而且,更值得注意的是,他们连选择投资者的权利都受到限制
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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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I ended up in the newspaper the next day for having argued that they are way off on their investment opportunities because oil is such a volatile thing.
结果第二天的报纸就报导,我提出,他们在投资的选择上错得离谱,因为石油是易变的。
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There's something called "variable life," which refers to a life insurance policy where the policyholder can make decisions about the investment of the money in the whole life policy.
有种保单叫做"可变寿险",作为终身寿险的一种,投保人可以自主选择,在终身寿险上进行多少投资
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We'll look at things--sectors say they're cheap or expensive and exploit the opportunity; but at least in terms of how I define market timing, it wouldn't be included in that definition.
关注研究资产和行业的细节,看它们是便宜了还是贵了,来发掘投资的机会,但至少在我所定义的市场时机选择方面,并不包括这些
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But ultimately, everyone agrees I-- that's the premise here, that for the-- if you're comparing two portfolios with the same variance, then you want the one with the higher expected return.
但归根结底大家都会同意这一点-,这是一个前提-,当你比较两个有相同方差的投资组合时，你会选择预期收益率高的那一个。
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When you add another asset, you do better when you have three assets, you do better than if you just had two because there's more diversification possible with three assets than with two.
当你增加一种资产，有三种资产的时候，投资组合的表现会比两种资产时更好,因为三种资产相比两种资产的情况,可选择的投资组合更多。
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When the stock market is going up they think that -they increasingly think that the stock market is just the best investment, until when it starts falling, then they start retracting from that.
当股票市场上行时,越来越多的人会觉得,股票是最佳投资选择,而当股市下跌时,人们纷纷从股市中撤出
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Because we hold relatively stable, relatively well-diversified portfolios, security selection turns out not to be an important determinant of returns for most investors and market timing turns out not to be an important determinant of returns.
因为持有相对稳定,和相对分散的投资组合,证券选择不再是,决定投资者回报率的重要因素,而市场时机选择,也不会成为决定回报率的重要因素
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The percent who think it's the best investment is higher in Los Angeles than in Milwaukee, and since the peak of the bubble in 2003, it's been declining in Los Angeles but, surprisingly, rising in Milwaukee.
认为房地产是最佳投资选择的人群,在洛杉矶居民中所占比例远高于密尔沃基,自从2003年房产泡沫达到最高峰,洛杉矶房价就一直在下跌,令人惊异的是密尔沃基房价仍在上涨
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So, it's not surprising that asset allocation explains more than 100% of returns and that, for the community as a whole, market timing and security selection are costly and lower the community's aggregate investment returns.
因此资产配置能解释100%以上的回报,也不足为奇了,对投资者整体来说,市场时机选择,和证券选择是有代价的,降低了总的投资回报
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Everyone would do that, no one would ever hold some other portfolio ... because you can see that this line is the lowest-- it's far--you want to get to the left as far as possible.
所有人都会这么做，没人会选择其他的投资组合,因为你们可以看到这条线是最低的-,你希望他越靠左越好。
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If security selection is a zero-sum game, the amount by which the winner wins equals the amount by which the loser loses -winners and losers being defined by performance after a security selection that has been made -well, that sounds like a zero-sum game.
如果证券选择是一个零和博弈,赢方赚得的金额,等于输方赔付的金额,谁赢谁输取决于,双方投资在证券选择后的表现,这听起来确实像个零和博弈
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