Akdag, SaffetYildirim, HakanAlola, Andrew Adewale2024-09-112024-09-1120231026-41162054-6246https://doi.org/10.1108/JEAS-05-2020-0077https://hdl.handle.net/11363/7855Purpose The recent dynamics of trade policy, especially that is associated with the United States of America (USA) and China, has not only triggered policy adjustments in two economies, it has also implied an uncertainty spillover to other economies across the globe. Consequently, the current study attempts to examine the effect of uncertainties in the USA-China trade policies on stock market indexes. In addition, the cointegration evidence between the USA-China trade policy uncertainty index and of the leading Global South fragile quintet (Brazil, Indonesia, South Africa, India and Turkey) stock market indices is investigated. Design/methodology/approach Mainly, the FMOLS and DOLS Granger causality analysis with cointegration coefficient estimators were employed for the dataset over the monthly data period of March 2003 and July 2019. Findings Accordingly, the study found a long-term relationship between the USA-China Trade Policy Uncertainty index and the stock exchange indexes. In addition, a causal relationship was established from the change in the USA-China Trade Policy Uncertainty index to the change in the stock market indexes of almost all of the examined countries (Brazil, Indonesia, South Africa, India and Turkey). In addition, the nonlinear Autoregressive Distributed Lag approach further offers evidence of asymmetric relationship among the examined indicators. Originality/value Moreover, this study contributed to the existing literature because it employed the indexes of BIST100, BOVESPA, BSE Sensex 30, IDX Composite and South Africa 40 in a novel approach. Thus, the study posited a useful policy guideline for associated economic uncertainties arising from the trade dispute, such as the case of the world's two largest trading giants or partners (i.e. the USA and China).eninfo:eu-repo/semantics/closedAccessTrade policiesUncertaintyStock indexCausality analysisCointegration analysisC22D22D80F13G23Article391607710.1108/JEAS-05-2020-0077N/AWOS:000657612900001N/A