Impact of supply chain logistics and green transportation on green economics under green finance, oil price shocks, and geopolitical risk: evidence from the globe via novel quantile methods

Abstract Countries’ and societies’ interest in becoming green has been developing in almost every area. Accordingly, the recent focus point has been becoming green economics. Therefore, dealing with green economics is important because it implicitly includes many issues. Therefore, to be compatible with the developing interest and importance of green economics, this study empirically examines green economics. In doing so, the study analyzes the global condition; uses the Nasdaq Green Economy Index (GREC) as the proxy of green economics; considers the Factset Supply Chain Logistics Index (SCLI) and Nasdaq Green Transportation Index (GTRI) as explanatory variables, which represent the critical factors in becoming green economics; controls the S&P Green Bond Index (SPGB), Brent Crude Oil Price (OIL), and geopolitical risk (GPR) index; uses data between 2nd January 2017 and 31st May 2024; and applies novel nonlinear quantile methods. The study shows that (i) SCLI and GTRI have a strong and increasing impact on GREC, where the power of increasing impact varies across quantiles; (ii) SCLI has a greater increasing impact than GTRI does on GREC; (iii) the impact of SCLI and GTRI on GREC continues to increase under the moderating impact of SPGB, OIL, and GPR, whereas these factors cause slight weakening; (iv) there is strong bidirectional causality; and (v) the robustness of the outcomes is verified by the alternative method. In this way, the empirical outcomes highlight the key role of supply chain logistics and green transportation in ensuring green economics even under the impact of green finance, oil prices, and geopolitical risk. Thus, in terms of outcomes, this study discusses policy endeavors (e.g., digitalization of supply chain logistics and electrification of transportation) to benefit from these factors to ensure further greening of the global economy.