Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This article examines possible explanations for 'winner-loser reversals' in the national stock market indices of sixteen countries. There is no evidence that loser countries are riskier than winner countries either in terms of standard deviations, covariance with the world market or other risk factors, or performance in adverse economic states of the world. While there is evidence that small markets are subject to larger reversals than large markets, perhaps due to some form of market imperfection, the reversals are not only a small market phenomenon. The apparent anomaly of winner-loser reversals in national market indices therefore remains unresolved. Copyright 1997 by American Finance Association.