Mark Hulbert: Why fat and short investors struggle in the stock market

CHAPEL HILL, N.C. (MarketWatch) — People who are tall and fit tend to invest more in stocks.

That’s the finding of a new academic study, “Stature, Obesity, and Portfolio Choice,” that’s destined to make waves not just in the stock market, but also in psychology and other behavioral sciences. It will be published in the academic journal Management Science.

That’s because this study has huge implications. It means, for example, that those who are tall and not overweight on average become significantly wealthier over their lifetime.

That doesn’t mean those of us who are short or overweight should start taking growth hormones or go on a diet, George Korniotis, a professor of finance at the University of Miami, hastened to tell me in an interview.

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