Research on Risk Contagion and Immunity of Asset Management Business Based on Complex Network

This paper introduces the complex network theory into the asset management business, and builds an asset management scale-free network model based on the management-managed relationship between the institutional business of China's asset management field. Taking the contagiousness of the risk management industry as the research object, this paper explores the characteristics of cross-service network degree distribution, strong distribution, cluster distribution and average path among financial institutions in the asset management industry. The research shows that China's asset management network has the characteristics of scale-free network, large differences in asset distribution among financial institutions, and incomplete connectivity between network nodes, which is similar to China's financial network. Based on the complex network, the SIR risk contagion model is used to simulate the infection process of risk in the network, and the effects of infection probability, propagation rate and recovery probability of the model parameter network nodes on risk contagion are discussed. The simulation results show that the change of node recovery probability has a greater impact on the overall risk density of the network than the change of infection probability. The focus of the risk immunization strategy in the asset management network is to improve the risk recovery probability of financial institutions. Finally, based on the simulation experiment results, the corresponding strategy of risk management for asset management network is proposed.