Document Type : Original Article
Authors
1 FUM
2 accounting, Ferdowsi University
Abstract
Empirical identification of the role of the life cycle in the fluctuation of stock returns according to economic conditions will improve the performance of investors and will improve the accuracy of company managers' forecasts. Based on this, in this research, the relationship between the stages of the company's life cycle and the fluctuation of stock returns according to the variables of macroeconomic conditions was investigated in the form of two hypotheses. The research is applied in terms of purpose and using the post-event approach, and based on the method, it is of the descriptive-correlation type. The statistical population of companies admitted to the Tehran Stock Exchange and the sample number was 157 companies during the years 1397 to 1401. To test the hypotheses, multivariate regressions were used in the Eviews13 software environment. The results of the research show that the volatility of stock returns in the maturity stage is less than the recession stage and in the growth stage it is more than the recession stage. If the exchange rate is taken into account, the volatility of stock returns in the stages of emergence, maturity, growth and decline is lower than in the recession stage. If the inflation rate is taken into account, the volatility of stock returns in the stages of emergence, maturity and growth is higher than in the stage of recession, and in the stage of decline it is not different from the stage of stagnation. If the bank interest rate is considered, the volatility of stock returns in the stages of emergence, maturity and growth is higher than in the stage of recession, and in the stage of decline, it is not different from the stage of recession. And finally, if the GDP is considered, the fluctuation of stock returns in the stages of emergence, maturity, growth and decline is not significantly different from the recession stage.
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