This work models the spillover of liquidity and volatility and their joint dynamics in the Chinese stock market. Methodologically, we implement a copula-based vector multiplicative error model for sectors. Utilizing intraday data from 2014 to 2022, our empirical analysis reveals strong interdependence between liquidity and volatility at the sectoral level. Moreover, different sectors dominate the transmission of liquidity and volatility shocks at different times. In normal times, sector volatilities transmit shocks notably (though not always dominantly), while in turbulent times, illiquidity is the key channel through which shocks spread. We also pay special attention to how two catastrophic events impacted the Chinese stock market: the 2015/16 stock market crash and the COVID-19 pandemic. Our ffndings are useful for policymakers monitoring and making policy at the sectoral level, as well as for institutional and private investors making investment decisions.

We construct a text-based indicator of US-China tension and examine its economic transmission. Our index closely tracks the share of related discussions in US firms’ earnings conference calls and that it correlates with firm actions in ways that are highly indicative of firm concerns about bilateral tensions. Elevated US-China tension is associated with protracted declines in US corporate investment, especially among firms that are expected to be exposed to the bilateral tensions. We also ffnd adverse effects of US-China tension in the aggregate, even after accounting for a large number of factors traditionally used to explain such effects. Impulse responses from medium-sized VARs show that positive shocks to the US-China tension index lead to protracted output declines, increased credit spreads, and reduced bilateral trade. These effects are milder and less persistent in the Chinese aggregates than those of the US. To examine how USChina tension propagates through the real economy, we isolate a component of our index reflecting the realizations of barriers that disrupt bilateral transactions from the component driven by uncertainty of increased barriers without their materialization. We find data patterns suggesting that the economic transmission of US-China tension primarily operates through uncertainty effects.

内 容 摘 要 基准利率在利率市场化的进程中居于核心地位，而中国的基准利率尚处在培育和发展阶段。本文在总结前人研究的基础上，提出从货币市场基础性和货币政策权威性两个角度进行分析，通过因果关系检验、脉冲响应分析和货币市场压力模拟，对SHIBOR的基准利率地位进行检验。检验结果表明，SHIBOR经过4年多的运行，具备了基准利率的主要特征，SHIBOR作为中国的基准利率更具科学性。基于上述的分析结果，本文提出了进一步加快把SHIBOR培育为基准利率的建议。 ABSTRACT Benchmark interest rate is on a core position in the process of interest rate marketization, while China’s benchmark interest rate is still in cultivating and developing stage. According to conclusions of former research, this article which is focused on base of monetary market and authority of monetary policy, through the ADF test, impulse response analysis and simulation of monetary market pressure, tests SHIBOR’s position of benchmark interest rate. Test results show that after more than four years’ operation, SHIBOR obtains the main characteristics of benchmark interest rate and becomes more reasonable to be benchmark interest rate. Based on the analysis above, this article put forward some proposals to accelerate the cultivation of SHIBOR.

The paper analyses monetary policy transmission mechanism in Nigeria. Vector auto-regression model is estimated for the pre-reform and post-reform periods. Variance decompositions and impulse response functions are examined to see whether there are any changes observed in the monetary transmission mechanism after the reforms. Different systems are estimated in each period using alternate variables as measures of monetary policy shocks. When compared results from the two estimation periods, we noted that both the responsiveness of prices and output to policy shocks and the magnitude of their forecast error variance decompositions, explained by these variables, have increased since the reforms. There is evidence of the bank-lending channel both before and after the reforms. Of the mechanisms estimated, the exchange rate and lending mechanisms seem to be the most important mechanisms for transmission of policy shocks to both prices and output during the post-reform period.