21/03/2026
I want to encourage everyone to see my new preprint prepared with Valeryia Yersh titled "Double-edged sword of capital mobility: Risk-sharing gains vs. volatility spillovers—Evidence from a multi-country panel".
Abstract
We investigate the dual nature of capital mobility across 157 countries and various sub-samples, including OECD, EU, emerging, high-, middle-, and low-income economies, from 1970 to 2019. We focus on whether capital mobility improves international risk sharing and reduces consumption volatility or primarily creates channels for volatility transmission. The analysis unfolds in two stages. In the first stage, we estimate measures of capital mobility and risk sharing using the Dynamic Common Correlated Effects Mean Group Estimator (DCCEMG) and juxtapose them with the measures of volatility of the consumption path. In the second stage, we examine their determinants using Bayesian Model Averaging. We find that the relationship between capital mobility, and generally openness of the economy is ambiguous. While openness facilitates risk sharing opportunities, it also increases consumption volatility through a higher degree of economic specialization and the risks of financial contagion. Moreover, we find that risk sharing enhances consumption smoothing only ex post (in the short run) through international borrowing and lending, while it does not improve it ex ante (in the long run) through international portfolio diversification. The results provide support for the “diminishing international diversification potential” hypothesis.