Sunday, Jan. 3, 2021 10:00 AM - 12:00 PM (EST)
- Chair: Andra Ghent, University of North Carolina-Chapel Hill
Securitization of Assets with Payment Delay Risk: A Financial Innovation in the Real Estate Market
AbstractWe study a new type of securitization, mortgage-receivable-backed securities (MRBSs) issued by real estate developers. Unlike traditional mortgage-backed securities (MBSs), the major risk of underlying assets of MRBSs is payment delay instead of default and prepayment. Different from default risk, delay risk refers to the uncertainty on how long it takes to obtain payments instead of whether the payments can be successfully obtained. Using unique loan-level data, we estimate proportional hazard models and detect factors that affect the delay risk of underlying assets of MRBSs, including bank characteristics, property-loan-household characteristics, local market conditions, and macroeconomic conditions. Especially, we find that the effects of house prices and LTVs on MRBS risk are the opposite of those on traditional MBS risk. Based on the estimates, we simulate cash flows of an underlying-asset pool and analyze the shortfall risk of the corresponding security tranches. We find that the securitization process imposes a natural adverse selection on the underlying assets. Our analyses provide a benchmark for conducting appropriate security designs based on the composition of the underlying asset pool, increase the transparency for investors on the risk pattern of MRBSs, and provide implications for pricing and regulation.
Price Discovery Limits in the Credit Default Swap Market in the Financial Crisis
AbstractWe derive the credit default swap (CDS) premium a financial institution requires to assume the default risk of fixed income instruments and the maximum premium a CDS buyer is willing to offer. These premiums are functions of the institution’s capital and current risk exposure. In most cases, an institution requires an increasing premium to assume additional risk. However, we show that an under-capitalized institution that already has substantial default risk exposure would engage in risk-shifting and assume more risk at lower CDS premiums. Consistent with this, prior to the 2008 financial crisis credit default swap issuance increased substantially, as did the volume of the underlying mortgage-backed securities, but the data suggests that required CDS premiums remained constant or declined.
Bubbles, Fragility and Optionality in Mortgage Securitization
AbstractThe defining characteristic of financial panics is fragility in the form of discontinuous changes in investor or depositor asset demand. We derive a model of fragility for portfolios of assets put into securitization deals. We show, in the context of adverse selection, that fragility is caused by convexity of the payoffs of the assets due to optionality in the assets. The optionality can come from the assets in the deal (like mortgages secured by properties), or from structuring by itself (like Collateralized Debt Obligations (CDOs)). Not accounting for optionality can cause misspecification and underestimation of tail risks. Some types of assets will not produce the nonlinearity that causes fragility, and some types of stress test models will miss fragility when it exists, causing underestimation of insolvency risk and capital needs.
- G1 - Asset Markets and Pricing