市场调研公司Ibbotson Associates的董事长罗吉.伊博森(Roger Ibbotson)同时还是耶鲁大学管理学院(Yale School of Management)的教授,他认为这类股票如今也将有所作为。
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罗格·伊博森是,我和希勒在管理学院的同事,他在对回报率来源的研究上,做了大量的工作。
Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.
我进一步查看了罗格·伊博森的数据,诸多例子都能说明这一点,但是印象最深刻的,发生于1929年10月的那次股灾。
I went back and took a closer look at Roger Ibbotson's data and there are lots of examples that will illustrate this point, but the most dramatic occurs around the crash in October 1929.
Roger Ibbotson took a look at a larger group of funds -3,500--funds over a ten-year period and found survivorship bias at 2.9% per year and backfill bias at 4.6% per year.
罗杰·伊博森研究了更大的样本组,3500支基金10年间的表现,算出其生存偏差是每年2.9%,回填偏差是每年4.6%
Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.
罗格·伊博森是,我和希勒在管理学院的同事,他在对回报率来源的研究上,做了大量的工作
I went back and took a closer look at Roger Ibbotson's data and there are lots of examples that will illustrate this point, but the most dramatic occurs around the crash in October 1929.
我进一步查看了罗格·伊博森的数据,诸多例子都能说明这一点,但是印象最深刻的,发生于1929年10月的那次股灾
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