突发事件冲击下的国际原油市场波动对股市的风险溢出研究

基于网络分析法原理,本文构建国际原油市场对股市的风险溢出强度指数,并在突发事件冲击下,系统考察国际原油市场波动对股市的风险溢出规律及影响机理。研究表明,突发新冠病毒感染会显著强化国际原油市场对股市的风险溢出,所在国感染风险上升会增强本土股市的脆弱性并加剧国际原油市场风险溢入。从风险溢出源头看,WTI和Brent原油期货市场是国际原油市场的风险溢出中心,这表明海外成熟度高、影响力大的原油市场波动更容易加剧系统性风险传染。从各股市受到的风险冲击强度看,尽管中国股市在病毒感染期间受到来自国际原油市场的风险溢出冲击强度低于美股和英国股市,但中国股市仍持续面临国际原油市场的风险溢出冲击。根据影响机理分析,在面对突发事件冲击时,优化金融市场环境、维持汇率稳定、降低股市投机氛围等均是有效应对手段。基于此,本文为有效监测国际原油市场风险输入,以及维持中国股市稳定和防范股市系统性风险提供有益参考。

中国系统性金融风险内部市场间的动态传导研究

文章运用动态Spearman-CRITIC赋权法综合测度了中国各市场的系统性金融风险指数,并依据广义方差分解模型分别测度了静态、分段静态和动态下各市场间的风险溢出溢入特征。结果显示,中国系统性金融风险整体可防可控,其中,外汇市场的风险溢出影响最强,且新冠肺炎疫情带来的溢出影响大于中美贸易摩擦带来的溢出影响。此结论也证实了中央提出的“双循环”和“全国统一大市场”经济政策的必要性。同时,信贷市场、房地产市场、股票市场成为风险的溢入市场,特别是信贷市场受到其他市场长期且持续的风险溢入。因此,政府应及时完善相应的政策法规,防止各市场“脱实向虚”,并习惯性地把风险传导至“刚性兑付”的银行信贷“最终端”。

Structural Reform Holds the Key to Reducing Social Financing Cost

In the last couple of years, social financing costs have shot up in China despite an overall capital abundance and increasing market-based capital allocation. This paper has investigated overall financial cost and capital cost ratio as two measurements of financing cost, compared financing costs of different channels, examined the relationship of risk premium, financial repression, interest rate liberalization, and resource occupation versus financing cost, and addressed the problem of high non-manufacturing cost. On such a basis, specific countermeasures have been proposed. The main conclusion of this paper is： The current high social financing costs primarily result from economic structural imbalance. The fundamental solution lies in continuing structural reform and credibility system development to eliminate barriers in the transmission of capital circulation policies such as expanding equity financing, relaxing market access formalities for small and micro financial institutions, and improving the bankruptcy system to give full play to the ＂survival of the fittest＂ mechanism of the market.