Assessing the Impact of COVID-19 on Global Supply Chains and Financial Markets: A Comparative Study of Developed and Developing Economies

The COVID-19 pandemic represents one of the most severe global economic disruptions in modern history, profoundly affecting financial markets and international supply chains. This study empirically examines the impact of the pandemic on financial market stability and supply chain performance across developed and developing economies using a mixed-method research framework. Employing cross-country panel data, volatility indicators, trade disruption measures, and policy response indices, the analysis reveals that the pandemic induced sharp declines in economic growth, extreme financial market volatility, and widespread trade and logistics disruptions. The results show that stock market volatility intensified significantly during the initial outbreak, accompanied by severe contractions in global trade and unprecedented oil price shocks. Strong volatility spillovers between energy markets and equity markets were observed, highlighting heightened financial interconnectedness during crisis periods. The findings further indicate pronounced heterogeneity across economies, with developing countries experiencing deeper financial instability, weaker policy buffers, and slower recovery trajectories compared to developed economies. Economies with stronger fiscal and monetary responses demonstrated greater resilience and faster stabilization. The study also documents persistent volatility during recovery phases, suggesting long-term economic scarring effects. Overall, the results underscore the importance of institutional strength, economic diversification, and coordinated policy interventions in mitigating the adverse effects of systemic global shocks. These findings contribute to the growing literature on crisis-induced financial instability and provide important policy insights for enhancing global economic resilience.