法定存款准备金率的调整对我国股票市场影响效应的实证研究

作为货币政策的三大基本工具之一,法定存款准备金率一向被认为对于货币供给量有着强烈的收缩能力,在国外通常不会轻易使用。但我国进入2006年以来,中国人民银行频繁动作,短短几年间调整达24次之多。为何我国会如此频繁使用这一工具？这种政策的调整对股票市场影响如何？股票市场这一传导渠道是否畅通？针对这一系列问题,本文采用事件研究法、干预分析模型与GARCH簇模型相结合对2006年以来法定存款准备金率的24次调整对股票市场的影响进行了实证分析。研究发现：从短期来看,法定存款准备金率的调整对我国股市的影响非常微弱;但对银行板块却有比较显著的公告效应,并且这种效应具有一定的滞后性。同时对同等幅度的政策调整,银行板块的反应比大盘更为剧烈。从长期来看,法定存款准备金率的调整对股票市场及银行板块的影响是长期存在的。从波动性的反应来看,法定存款准备金率的调整能有效降低银行板块股价的波动性,但对整个大盘而言则影响甚微。

Empirical Study on the Impacts of Reserve Requirement Ratio on Stock Markets in China

As one of the three basic monetary policy tools, theReserve Requirement Ratio is rarely used because it has been considered having a strong contraction effect for monetary supply. However, the People＇s Bank of China made frequent adjustments for 24 times in a few years since 2006. Why could it be frequently used in China？ What is the impact of the policy adjustment on the stock markets？ Are the stock markets un- blocked as a conduction channel？ To answer these problems, this paper empirically ana- lyzes the influence of 24 times adjustment of Reserve Requirement Ratio since 2006 to the stock markets by combining event-study, the intervention analysis model, and GARCH model.