Research On The Impact Of Epidemic On Systemic Risk Of Banking Industry From The Perspective Of Correlation

Before the outbreak of the epidemic,with the development of global economic integration,the economic ties between countries have strengthened obviously,and the interaction is obvious.Considers the diversification and complexity of inter-bank linkage,traditional risk research methods are not applicable,so this paper uses the threshold method to build a complex network to describe the dynamic linkage between listed banks,and the related topology property,thus obtains along with the epidemic development stage change,between the banking industry network’s structure dynamic change.It found that the study of the linkage between stock markets has been more fruitful,so we have followed the methodology of the study of this market.On the one hand,the RMT method is used to denoise the data,and the correlation coefficient matrix which can reflect the interaction relationship between each economic agent is obtained.On the other hand,it is found that some foreign scholars have made some achievements in the study of the impact of the epidemic on the banking industry.Because it belongs to the US dollar or the euro area,the economic policies and the means of regulation and control are different from the national conditions,in view of this,this article from the perspective of relevance,banking network model around the nature of the relevant analysis,the results as follows: firstly,the interaction among banks in the sample interval of the first round of epidemic is stronger than that in the sample interval of the second round of epidemic,and the fluctuation of banking system is more obvious in the same direction.Secondly,the overall market effect in the sample interval of the first-round epidemic was stronger than that in the sample interval of the second-round epidemic,but the interaction between the real networks did not fluctuate significantly.Thirdly,there is a small world effect in the banking industry,and the two rounds of the epidemic have different community centers.Risk is more contagious in an effective community than in an entire network.Fourthly,there is regional homogeneity in both outbreaks.Fifthly,the impact of the pandemic has increased the correlation between banking stocks,increasing the systemic risk of the banking sector.Sixthly,the stability and anti-risk of the whole network are better under the lower threshold.In short,the impact of the epidemic in the banking sector as a whole close contact between the main inter-influence.With the gradual release of the epidemic,the study of the risk and its impact on the banking industry at different stages of the epidemic is not only conducive to the formulation of relevant risk control measures,but also conducive to the investment portfolio selection of investors in the relevant industries.