Symmetric and asymmetric effects of crude oil price and exchange rate on stock market performance in Nigeria: Evidence from multiple structural break and NARDL analysis

Kingsley Ikechukwu Okere, Obumneke Muoneke and Favour Chidinma Onuoha

The Journal of International Trade & Economic Development, 2021, vol. 30, issue 6, 930-956

Abstract: This study explores the linear and non-linear impact of Nigeria's oil price and exchange rate on stock market performance from January 1995 to December 2019 using the non-linear autoregressive distributed lag (NARDL) method. The results from the linear ARDL show a long and short-run positive relationship between the Nigerian stock market and crude oil prices while, the exchange rate show an insignificant in the long-run effect but a significant positive relationship in the short run. The non-linear ARDL front, the tests show that the impact of positive shocks in crude oil price has a significant increasing effect on stock market performance in Nigeria, while negative shocks in crude oil prices have a significant increasing effect on stock market performance. The exchange rate has an insignificant relationship with stock market performance both in short- and long-run asymmetric test. The adjustment asymmetry from the dynamic multiplier graphs shows that the response of stock market performance to a negative change in oil price is stronger than that in response to a positive change. Overall, the result provides the need to diversify investment portfolios through the international equity market, keeping a close watch on the oil price fluctuation which is of importance in formulating risk–return portfolios of stock market performance.

Date: 2021
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DOI: 10.1080/09638199.2021.1918223

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