How does the central bank stabilize the stock market under macro uncertainty: Evidence from China stock market

Abstract

This paper establishes mathematical models and PVAR models to verify the micro transmission path and the validity of central bank communication and actual interest rate intervention on China stock market. Through heterogeneity analysis, we further test whether the level of macroeconomic uncertainty affects their effect. We confirmthat both central bank communication and actual interest rate intervention have a significant effect. However, central bank communication is ineffective in the high macroeconomic uncertainty sample while the interest rate intervention can have a greater effect. Overall, the results suggest that central bank communication is a more effective monetary policy tool on stock market in low macroeconomic uncertainty period, while interest rate intervention is a better choice in high macroeconomic uncertainty period.