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Article
Publication date: 31 August 2017

Hyeon-Wuk Tae, Ung-Gi Seo, Bong-Gyu Jang, Jun Kim, Jong-Hyuk Roh and Seryoong Ahn

This paper introduces a basic model and an extended model to evaluate the pass-through mortgage-backed securities (MBS) recently issued by Korea Housing Finance Corporation. The…

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Abstract

This paper introduces a basic model and an extended model to evaluate the pass-through mortgage-backed securities (MBS) recently issued by Korea Housing Finance Corporation. The basic model assumes that the processes of interest rates, prepayment rates, and option-adjusted spreads have simple forms, of which parameters can be easily estimated by the market data available today. This paper presents the pricing formula on the basic model and the demonstrations under the present market data. We also suggest an extended model, a new but complicated model for pricing pass-through MBS, in which the interest rates and prepayment rates follow stochastic processes, and the option-adjusted spread is decomposed into one from refinancing and the other from mortgage turnover. However, since this kind of pass-through MBS has been traded in Korean financial market only recently, the market parameters in the extended model are not able to be estimated properly. We, instead, develop the pricing formula under the extended model and present the process of estimation of the parameters of the model. The participants in Korean MBS market can price the pass-through MBS for now under the basic model with limited set of data available, and later, when the market data is accumulated enough to estimate the parameters properly, they can take advantage of the extended model.

Details

Journal of Derivatives and Quantitative Studies, vol. 25 no. 3
Type: Research Article
ISSN: 2713-6647

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Open Access
Article
Publication date: 30 November 2012

Yun Woo Park and Doo Won Bang

Residential mortgage loans as well as the MBS (mortgage-backed security), which securitizes these loans, are exposed to prepayment risk. We examine the effect of prepayment…

9

Abstract

Residential mortgage loans as well as the MBS (mortgage-backed security), which securitizes these loans, are exposed to prepayment risk. We examine the effect of prepayment process on the duration of the CMO (multi-tranche MBS). In particular, we examine the effect of partial pass-through where there is a call limit expressed as a percentage of initial tranche balance. Due to the absence of empirical research on the CMO duration, neither the actual CMO duration nor the determinants of the CMO duration have been reported. Our study reports the actual CMO duration and the determinants of the CMO duration. By showing that the CMO duration is much shorter than the nominal time-to-maturity we point to the need to search for longer duration MBS structures. We find that in both the deterministic and stochastic interest rate environments duration is reduced as prepayment speed rises and duration rises as call limit decreases.

We make contribution to the literature by shedding light on the effect of prepayment and call limit on the duration of multi-tranche MBS. In particular, this research characterizes the impact of the partial pass-through structuring approach on the CMO duration as well as CMO pricing. Finally, it assists CMO investors in better assessing and managing reinvestment risks of pass-through products.

Details

Journal of Derivatives and Quantitative Studies, vol. 20 no. 4
Type: Research Article
ISSN: 2713-6647

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Open Access
Article
Publication date: 21 September 2022

Sang Won Lee, Su Bok Ryu, Tae Young Kim and Jin Q. Jeon

This paper examines how the macroeconomic environment affects the determinants of prepayment of mortgage loans from October 2004 to February 2020. For more accurate analysis, the…

2485

Abstract

This paper examines how the macroeconomic environment affects the determinants of prepayment of mortgage loans from October 2004 to February 2020. For more accurate analysis, the authors define the timing of prepayment not only before the loan maturity but also at the time when 50% or more of the loan principal is repaid. The results show that, during the global financial crisis as well as the recent period of low interest rates, macroeconomic variables such as interest rate spreads and housing prices have a different effect compared to the normal situation. Also, significant explanatory variables, such as debt to income (DTI) ratio, loan amount ratio and poor credit score, have different effects depending on the macroenvironment. On the other hand, in all periods, the possibility of prepayment increases as comprehensive loan to value (CLTV) increases, and the younger the age, the shorter the loan maturity. The results suggest that, in the case of ultralong (40 years) mortgage loans recently introduced to support young people purchasing houses, the prepayment risk can be, at least partially, migrated by offsetting the increase in prepayment by young people and the decrease in prepayment due to long loan maturity. In addition, this study confirms that the accelerated time failure model compared to the logit model and COX proportional risk model has the potential to be more appropriate as a prepayment model for individual borrower analysis in terms of the explanatory power.

Details

Journal of Derivatives and Quantitative Studies: 선물연구, vol. 30 no. 4
Type: Research Article
ISSN: 1229-988X

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Open Access
Article
Publication date: 6 November 2017

Noel Murray, Ajay K. Manrai and Lalita Ajay Manrai

This paper aims to present an analysis of the role of financial incentives, moral hazard and conflicts of interests leading up to the 2008 financial crisis.

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Abstract

Purpose

This paper aims to present an analysis of the role of financial incentives, moral hazard and conflicts of interests leading up to the 2008 financial crisis.

Design/methodology/approach

The study’s analysis has identified common structural flaws throughout the securitization food chain. These structural flaws include inappropriate incentives, the absence of punishment, moral hazard and conflicts of interest. This research sees the full impact of these structural flaws when considering their co-occurrence throughout the financial system. The authors address systemic defects in the securitization food chain and examine the inter-relationships among homeowners, mortgage originators, investment banks and investors. The authors also address the role of exogenous factors, including the SEC, AIG, the credit rating agencies, Congress, business academia and the business media.

Findings

The study argues that the lack of criminal prosecutions of key financial executives has been a key factor in creating moral hazard. Eight years after the Great Recession ended in the USA, the financial services industry continues to suffer from a crisis of trust with society.

Practical implications

An overwhelming majority of Americans, 89 per cent, believe that the federal government does a poor job of regulating the financial services industry (Puzzanghera, 2014). A study argues that the current corporate lobbying framework undermines societal expectations of political equality and consent (Alzola, 2013). The authors believe the Singapore model may be a useful starting point to restructure regulatory agencies so that they are more responsive to societal concerns and less responsive to special interests. Finally, the widespread perception is that the financial services sector, in particular, is ethically challenged (Ferguson, 2012); perhaps there would be some benefit from the implementation of ethical climate monitoring in firms that have been subject to deferred prosecution agreements for serious ethical violations (Arnaud, 2010).

Originality/value

The authors believe the paper makes a truly original contribution. They provide new insights via their analysis of the role of financial incentives, moral hazard and conflicts of interests leading up to the 2008 financial crisis.

Details

Journal of Economics, Finance and Administrative Science, vol. 22 no. 43
Type: Research Article
ISSN: 2077-1886

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