Title: Portfolio optimisation in global equity markets

Authors: Mrityunjay Kumar Tiwary; Vaibhav Aggarwal

Addresses: Indian Institute of Management, Lucknow, 226013, India ' O.P. Jindal Global University, Haryana, India

Abstract: Over the past few decades, economic liberalisation and tech advancements have strengthened linkages between world equity indices in both developed and developing economies. Several studies indicate significant volatility transmission amongst major global equity indices. However, this study addresses the scant literature on utilising the volatility linkages to create pair-wise efficient portfolio weights for international investors. The findings suggest that international investors in the emerging market should give the highest allocation to Taiwan and the lowest exposure to Russia. Further, investors in frontier markets should give maximum portfolio allocation to the Canadian stock market. This study has several important implications. First, international investors can formulate better risk-adjusted equity portfolios across major markets. Second, the regulators can formulate policies to reduce the inflow of volatility from other markets with suitable policies.

Keywords: portfolio weight; BEKK-GARCH; spillover; stock indices; diversification.

DOI: 10.1504/IJBIR.2025.146036

International Journal of Business Innovation and Research, 2025 Vol.37 No.1, pp.1 - 18

Received: 01 Nov 2021
Accepted: 19 May 2022
Published online: 02 May 2025 *

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