The effect of oil price changes on Tehran Stock Exchange returns by non-line co-integration test

Document Type : Research Paper

Authors

1 Assistant Professor of Economics, Payame Noor University, Tehran, Iran.

2 Assistant Professor and Faculty Member of the Institute of Materials and Energy, Tehran, Iran.

3 Ph.D. Student of Economic Sciences, Department of Economics, Middle University, Islamic Azad University, Midoun, Iran.

4 Master of Science (Economics), Department of Economics, Payame Noor University, Karaj, Iran

Abstract

Abstract
Given the high role of oil and its sales and its price in Iran's economy, as well as the popularity of the general public and economic activists and foreign investors in the Tehran Stock Exchange, the relationship between the changes in crude oil prices and stock returns is significant. This study examines the coexistence and causal relationship between crude oil prices and Tehran Stock Exchange. It seems that the price of crude oil and the stock exchange is related to the exchange rate in the economy, which in fact changes in the price of crude oil have a direct effect on the exchange rate and the exchange rate changes affect the stock exchange. In order to investigate the hypotheses of this study, data on bourse yield, exchange rate and daily OPEC basket price were used during the period of 1383-1393. Also, to investigate the relationship between the variables, the co-integration test has been used. Finally, the co-integration among the variables has been confirmed, and a long-term relationship between the variables studied has been discovered. In fact, there is a coincidence that there is asymmetry in shifting oil price changes to stock exchanges. In the opinion of investors, aggregation of stocks and oil prices, the diversification of investment portfolio by holding capital in the oil and gas market simultaneously does not significantly increase market risk and long-term profitability.

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