Investigating and measuring the monetary policy response to fluctuations of the stock market in Iran's economy

The lack of attention to the stock market and the increase in fluctuations in this market will undermine the movement of the financial system of the countries, and will negatively affect various methods such as the effect of wealth and investment on performance and economic growth. Therefore, paying attention to stock market fluctuation and controlling these fluctuations is especially important for creating financial flows between different sectors of the economy. Therefore, in this research, in order to investigate the monetary policy response to stock market fluctuations with a focus on the effect of wealth, a dynamic stochastic general equilibrium model in open economy conditions is designed to fit the structure of Iran's economy. The parameters of the proposed model are estimated by using the Bayesian method and using quarterly data during the period of 1991-2015. The results of model simulation indicate that due to the occurrence of a shock to the monetary and stock the stock index is diverted from its fundamental level and the central bank, in order to prevent fluctuations in the stock market, decreases the monetary base growth. Also, the interest rate shock causes stock index, consumption, total output, and imports to drop. Reducing the interest rate by the central bank will cause the stock index to return to equilibrium level after 10 periods.