A Study on Prepayment Risk of Residential Mortgage-backed Securitization in ChinaA Case of "JIAMEI 2018-1 MBS Program"

Abstract

The Residential Mortgage-Backed Securities market (RMBS) has played a large role in enhancing the liquidity of mortgages, and in relieving the pressure of capital constraints on commercial banks. There are three main risks associated with residential mortgage-backed securitization: prepayment risk, interest rate risk, and default risk. This paper analyzes the prepayment risk in the "JIAMEI 2018-1"RMBS, the largest single RMBS product of the Postal Saving Bank of China (About 14 billion RMB). We introduce the JIAMEI 2 018-1 and study the factors that affect its prepayment risk. Using data, we conclude that the products involved in this case have comparatively low prepayment risk, even under the double influence of the housing finance policy tightening and the impact of the COVID-19 Pandemic.