Financial Analysts Journal May/June 2015 Volume 71 Issue 3
The Crash Risks of Style Investing: Can They Be Internationally Diversified?
The crash risks of momentum tend to be higher than those of size and value. International diversification lowers the crash risks of size and value but not momentum. The authors examined the conditional correlations and return co-exceedances of style portfolios across countries and found that this difference in the effect of diversification is due to the left (right) tails of momentum (size and value) portfolios being more correlated than the right (left) tails across countries.