An Empirical Investigation of Foreign and Domestic Portfolio Investment on Economic Growth in Nigeria

Abstract

This paper empirically investigated the growth implications of foreign portfolio investment inflows and foreign portfolio investment outflows in Nigeria over the period 1986 to 2018. Secondary data sourced from the Central Bank of Nigeria (CBN) Statistical Bulletin, National Bureau of Statistics (NBS) and World Development Indicator (WDI) was used for examining the relationships among the endogenous variable and exogenous variables included in the model. The study employed Augumented Dickey Fuller (ADF) unit root test, Phillips-Perron (PP) unit root test, Johansen co-integration test, Ordinary Least Square (OLS) multiple regression technique to investigate the relationships among real gross domestic product (RGDP), foreign portfolio investment outflows (FPI),  foreign portfolio investment inflows (DPI), exchange rate (EXGR) and inflation rate (INFR). Empirical findings revealed that foreign portfolio investment inflows (DPI) exerted statistically significant positive relationship with economic growth (RGDP) whereas foreign portfolio investment outflows (FPI) exhibited statistically significant negative relationship with economic growth (RGDP) in Nigeria over the studied period.  Based on the estimated results, government at all levels in Nigeria should create enabling environment for the attraction of foreign portfolio investment inflows in order to spur economic growth; and  monetary authorities in Nigeria should ensure stabilization of capital and money market activities with appropriate policies to sustain internalization and attractiveness to investors.            

Keywords: Foreign portfolio investment outflows, Domestic portfolio investment inflows, Economic growth, Ordinary Least Square Regression, Nigeria

DOI: 10.7176/JESD/13-2-02

Publication date: January 31^st 2022