Assessing Liquidity Risk and Returns in Developing Bond Markets

Abstract

This study examines whether bond returns in developing markets reflect liquidity risk premia. The concept of a liquidity premium is fundamental to explaining cross- sectional differences in bond yields (Amihud & Mendelson, 1986). Investors in emerging economies often face higher risks when holding illiquid instruments, such as long-maturity bonds or securities issued by less-transparent entities, raising critical questions about how liquidity constraints influence expected returns (Acharya & Pedersen, 2005; Chen & Chen, 2021). Building on the theoretical frameworks developed by Pastor and Stambaugh (2003) and Acharya and Pedersen (2005), this research investigates the pricing of liquidity risk in both corporate and government bond markets in developing economies. A five- year dataset (October 2019 – October 2024) of daily bond-level data was collected from reputable financial databases, including Bloomberg and DataStream, across a diverse group of developing markets. To empirically test whether liquidity risk is priced into bond returns, the study applies a multi-factor asset pricing framework, incorporating both the Pastor-Stambaugh and Amihud liquidity measures. The analysis uses fixed-effects panel regressions, controlling for bond-specific variables (e.g., duration, coupon rate), credit risk, term structure factors, equity market co-movements, and macroeconomic influences. Robustness checks include subsample regressions by bond type and country, and alternative model specifications to address structural market differences. The empirical findings reveal a consistent and significant positive relationship between bond returns and liquidity risk. This relationship persists after accounting for credit and macroeconomic risks, suggesting that investors demand compensation for bearing liquidity-related uncertainty. Moreover, the magnitude of liquidity risk premiums varies by country. In markets with greater institutional development such as Brazil and Mexico liquidity premiums are comparatively lower, while countries with higher political and economic volatility exhibit elevated premiums (Ehsani & Razmi, 2019; Kim & Lee, 2021). iii | P a g e These results highlight the critical role of liquidity in shaping investor behavior and bond pricing in developing markets. Factors such as bid-ask spreads, trade frequency, foreign investor participation, and accessibility significantly influence return expectations. The findings carry practical implications for investors and policymakers alike. For policymakers, enhancing infrastructure, improving transparency, and fostering more stable market environments can reduce liquidity risk premiums and increase investor confidence (Fleming & Remolona, 1997; Huang & Wang, 2020). Overall, this research contributes to the literature on bond market development by providing robust evidence that liquidity risk is a priced component in developing bond markets. Future studies may further investigate how regional dynamics in Sub- Saharan Africa and Southeast Asia shape liquidity premia, or assess the long-term influence of global financial crises on liquidity risk (Wang & Li, 2021).