Bank’s major approach in her internal rating system is credit scoring valuation which focused on corporates’ idiosyncratic risks and based on their financial indexes. Hence, an influence on corporates’ credit risks by business variation is not considered in her system. We model the effect...

Bank’s major approach in her internal rating system is credit scoring valuation which focused on corporates’ idiosyncratic risks and based on their financial indexes. Hence, an influence on corporates’ credit risks by business variation is not considered in her system. We model the effect...

This study assesses the impact of the novel coronavirus disease (COVID-19) cases on the Japanese stock market. As of October 30, 2020, the cumulative number of cases in Japan has reached over one hundred thousand. COVID-19 has significantly affected both the lifestyle and the economy in Japan....

This study assesses systemic risk in the US credit default swap (CDS) market. After the bankruptcy of Lehman Brothers, the market introduced risk mitigation tools, such as central clearing and portfolio compression in addition to existing netting and collateralization. Because CDSs typically...

This paper contributes to the literature on systemic risk by examining the network structure of bilateral exposures in the global banking system. The global interbank market constitutes a major part of the global banking system. The market has a hierarchical network structure, composed of the...

This paper contributes to the literature on systemic risk by assessing the network structure of bilateral insurance exposures in the global non-life insurance market. The reinsurance is the major risk transfer function in the global insurance market and its network has a hierarchical structure....

This paper contributes to the systemic risk literature by assessing the network structure of bilateral exposures in the Japanese interbank market. The Japanese interbank market is composed of call and bankers' acceptance markets, and the market participants are restricted to financial...

This study assesses the credit risk of Japan's real estate investment trusts (J-REITs) in two related markets during the fiscal years 2008--2017. The first J-REIT market involves blockholders, while the second is a lending market of institutions (i.e., banks and insurers). Unlike investment...

This study assesses the credit rating migration risk and interconnectedness among bank-to-listed firms and insurer-to-listed firms in Japan's corporate lending market during the fiscal years 2008-2015. The study uses outstanding lending data with borrowers and lenders names to conduct a...

We evaluate sovereign default risk in G7+5 countries under the novel coronavirus disease (COVID-19) crisis in 2020. A second COVID-19 wave has been spreading worldwide since the end of 2020. We first derive default risk parameters using sovereign credit default swap spreads and constant maturity...