Apple, Microsoft, Amazon and Google - A Correlation Analysis: Evidence from a DCC-GARCH Model

14 Pages Posted: 6 Nov 2020

See all articles by Christoph Koser

Christoph Koser

Universitat de Barcelona

Juergen Klaus

Technische Universität Dresden Faculty of Business and Economics

Date Written: October 25, 2020

Abstract

In this paper, we examine time-varying correlations among stock returns of Apple, Microsoft, Amazon and Google. Employing a multivariate DCC-GARCH model, we find that there are strong linkages among these four assets. Starting from lower levels, correlation values for most asset pairs exhibit a stable ascending movement in recent upward trended markets to, in an exceptional case, almost hit the perfect positive correlation mark. We show that correlations among these assets jump during downturn market periods, suggesting limits in the diversification of risk within the segment of large cap U.S. technology stocks. Our results are helpful for portfolio management and asset allocation.

Keywords: Dynamic Conditional Correlation, Return Dynamics, DCC-GARCH Model

JEL Classification: C10, C58, G1, G10, G11

Suggested Citation

Koser, Christoph and Klaus, Juergen, Apple, Microsoft, Amazon and Google - A Correlation Analysis: Evidence from a DCC-GARCH Model (October 25, 2020). Available at SSRN: https://ssrn.com/abstract=3718788 or http://dx.doi.org/10.2139/ssrn.3718788

Christoph Koser (Contact Author)

Universitat de Barcelona ( email )

Barcelona
Spain

Juergen Klaus

Technische Universität Dresden Faculty of Business and Economics ( email )

Helmholtzstr. 10
Hülsse-Bau
Dresden, 01062
Germany

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