During the Beijing Games, Bela Karolyi, the former coach of famed gold medalist Nadia Comaneci, said the only solution to age disputes was to abandon the age minimum altogether.

WSJ: Menu

An article in this month's Journal of Financial Economics by Mr Karolyi, Warren Bailey, of Cornell University, and Carolina Salva, of the University of Bern, suggests that once foreign companies list in America, their share prices are more volatile at the time of earnings announcements.

ECONOMIST: Finding the best place to issue shares is getting harder

Research by Andrew Karolyi, of Ohio State University (who advises the New York Stock Exchange), and others finds that when foreign companies list in America, more analysts start covering them, and the extra transparency and higher governance standards demanded by American law helps their share prices.

ECONOMIST: Stockmarket listings: In search of cheap money | The