Bridge over ocean
1 July 1998 Financial Analysts Journal Volume 54, Issue 4

The Mean–Variance Framework and Long Horizons

  1. Thomas Albrecht

Some have argued that low-risk investments grow more attractive at longer investment horizons as their Sharpe ratios improve relative to high-risk investments. This article rejects this view by showing that the long-term standard deviation of returns can be misleading as an indicator of risk: Because of compounding, investments with identical standard deviations can have entirely different long-term risk characteristics even if all instantaneous investment returns are normally distributed. Furthermore, even if an individual investor accepts standard deviation of long-term returns as a measure of long-term risk, the relative attractiveness of high-risk investments can be kept constant by proper portfolio adjustments.

Read the Complete Article in Financial Analysts Journal Financial Analysts Journal CFA Institute Member Content

We’re using cookies, but you can turn them off in Privacy Settings.  Otherwise, you are agreeing to our use of cookies.  Accepting cookies does not mean that we are collecting personal data. Learn more in our Privacy Policy.