Reconceptualizing Central Bank Transparency: A Multidimensional Index and Its Implications for International Equity Portfolio Allocation

This paper examines the influence of Monetary Policy Transparency on Foreign Equity Portfolio Allocation by addressing the informational frictions that shape cross-border investment in Financial Markets. Building on recent developments in central bank communication, we construct a multidimensional measure of Monetary Policy Transparency that extends traditional frameworks by incorporating Accounting Information Transparency and Financial Stability Transparency. This enhanced index provides a more comprehensive representation of the informational environment faced by foreign investors. Using a panel of developed and emerging economies over a twenty-year period, the empirical analysis combines OLS and system GMM estimations to account for endogeneity, dynamic effects, and unobserved heterogeneity. The results indicate that higher levels of Monetary Policy Transparency significantly increase the attractiveness of domestic equity markets to foreign investors, with heterogeneous effects across country groups linked to differences in institutional credibility and financial integration. Overall, the findings highlight multidimensional transparency as a key determinant of Foreign Equity Portfolio Allocation, underscoring the strategic importance of Accounting Information Transparency and Financial Stability Transparency in shaping foreign equity portfolio allocation.