سید حسین میرجلیلی

Monetary policy is one of the most important tools for policymakers to influence macroeconomic variables including production. However, implementing this policy sometimes yields unintended consequences. Understanding monetary policy transmission mechanisms is therefore critical for effective implementation. Research following the 2008-2009 financial crisis indicates that the shadow banking activity can disrupt the monetary policy transmission and weaken its effectiveness. An analysis of Iran’s financial system reveals increasing shadow banking activity. This paper therefore examines how shadow banking affects monetary policy transmission in Iran using a DSGE model that innovatively incorporates the shadow banking sector. We compare two scenarios: a financial system without shadow banking and one including shadow banking. The effects of two contractionary monetary policies—interest rate increase and reductions in money supply growth—on GDP, investment, and inflation were analyzed under each scenario. The findings indicate that shadow banking diminishes monetary policy’s impact on all three variables by weakening the credit channel of monetary policy transmission. In the scenario without shadow banking, In the scenario without shadow banking, all three variables will decline in response to the monetary shock of decreasing money supply growth. However, in the scenario with shadow banking, investment levels are not declining but rising. The impact of monetary policy on output and inflation is diminished in the presence of shadow banking. In the case of interest rate shocks, the results also indicate a negative impact of shadow banking on the effectiveness of monetary policy.

The value of a company is important to shareholders, investors, managers, creditors, and other stakeholders in their assessment of the company's future, its impact on the estimation of investment risk and returns, and stock prices. Therefore, examining the factors affecting a company's value is crucial. Intellectual capital, as a determinant in creating competitive advantage and value, plays a special role and is considered as an intangible asset of companies. Theoretical background and empirical evidence suggest that intellectual capital has a direct impact on a company's value and performance. Moreover, the need for corporate governance arises from the potential conflict of interest between individuals within the company's structure, which can affect its value. As banks’ shares play an important role in the Tehran Stock Exchange, we examine the impact of intellectual capital and good corporate governance on bank value, with the mediating effect of financial performance. The statistical population of this study includes 17 banks listed on the Tehran Stock Exchange over the period from 2017 to 2021. The results indicated that intellectual capital has a significant effect, while corporate governance does not have a significant effect on bank value. Additionally, the mediating effect of financial performance on the relationship between intellectual capital and bank value is accepted based on the Baron and Kenny method for mediation. The findings also show that the mediating effect of financial performance on the relationship between good corporate governance and bank value is confirmed according to the Zhao et al. procedure. Moreover, the results indicated that adding another independent variable relatively increases the explanatory power of the model.