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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/63231
標題: | 證券化的瑕疵:信用評等與金融危機 Flaws in Securitization: Optimistic Ratings and Financial Crisis |
作者: | Jui-Jung Tsai 蔡瑞容 |
指導教授: | 林修葳 |
關鍵字: | 信用評等機構,住宅房貸擔保證券,次級房貸,金融危機,證券化, Credit Rating Agencies,Residential Mortgage-Backed Securities (RMBS),Subprime Mortgages,Financial Crisis,Securitization, |
出版年 : | 2012 |
學位: | 博士 |
摘要: | Overly optimistic credit ratings of complex structured financial products, particularly in residential mortgage-backed securities (RMBS), are widely cited as contributing to the recent financial crisis. We use a unique comprehensive data set, precisely linking RMBS deals, securities, and over 18.1 million mortgage loans, to reveal the flaws of the securitization process and the extent of rating inflation in three dimensions: (a) across the different types of non-agency RMBS (subprime, Alt-A, and prime jumbo), (b) among the three leading credit rating agencies (S&P, Moody’s, and Fitch), and (c) over the entire business cycle (growth, boom, and recession) between 2002 and 2008. We find significant mismatches between the published ratings and the underlying risk between 2004 and mid-2007. During this period, loan quality deteriorated, the level of credit enhancement weakened, and the credit rating agencies failed to address the increased risk, all of which contributed to overall rating inflation. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/63231 |
全文授權: | 有償授權 |
顯示於系所單位: | 國際企業學系 |
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