Identifying the systemic importance and systemic vulnerability of financial institutions based on portfolio similarity correlation network

EPJ Data Science

Table 3 The change in average portfolio similarity between different types of financial institutions

	2017	2018	2019	2020	2021
Bank-Insurance company	0.5047	0.5304	0.5290	0.4552	0.5181
Bank-Securities firm	0.0335	0.2249	0.2058	0.1730	0.1798
Insurance company-Securities firm	0.2990	0.5293	0.4497	0.4867	0.3977