We study tail-risk contagion in Belt and Road (BRI) stock markets by conditioning on shocks from China and global commodities. We construct time-varying contagion indices from conditional higher co-moments (CoHCM) estimated within a DCC-GARCH model with generalized hyperbolic innovations, and apply them to daily data for 32 BRI markets. The higher-moment index isolates two channels: a China-driven financial-institutional channel and a WTI-driven commodity-real-economy channel, whereas a covariance benchmark fails to recover this separation. Furthermore, the system-GMM estimates link the China-conditional channel to institutional quality and financial depth, and the WTI-conditional channel to real activity. In out-of-sample portfolio tests, the WTI-conditional signal improves risk-adjusted performance relative to equally weighted and mean-variance benchmarks, while the China-conditional signal does not. Tail-based measurement thus sharpens identification of contagion paths and yields information that is economically relevant for risk management in interconnected emerging markets.

Numerous studies have focused on the theoretical and empirical aspects of corporate capital structure since the 1960s. As a new branch of capital structure, however, debt maturity structure has not yet received as much attention as the debt-equity choice. We use the existing theories of corporate debt maturity to investigate the potential determinants of debt maturity of the Chinese listed firms. In addition to the traditional estimation methods, the system-GMM technique is used to explicitly control for the endogeneity problem. We find that the size of the firm, asset maturity and liquidity have significant effects in extending the maturity of debt employed by Chinese companies. The amount of collateralized assets and growth opportunities also tend to be important. However, proxies for a firm’s quality and effective tax rate apparently report mixed or unexpected results. Debt market and equity market conditions are also examined in relation to corporate loan maturity. The system-GMM results show that market factors seem to influence debt maturity decisions. Finally, corporate equity ownership structure has also been found to have some impact on debt maturity mix.