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Working Paper
An empirical test of a two-factor mortgage valuation model: how much do house prices matter?
Mortgage-backed securities, with their relative structural simplicity and their lack of recovery rate uncertainty if default occurs, are particularly suitable for developing and testing risky debt valuation models. In this paper, we develop a two-factor structural mortgage pricing model in which rational mortgage-holders endogenously choose when to prepay and default subject to i. explicit frictions (transaction costs) payable when terminating their mortgages, ii. exogenous background terminations, and iii. a credit-related impact of the loan-to-value ratio (LTV) on prepayment. We estimate ...
Working Paper
Trading activity and price volatility in the municipal bond market
Utilizing a comprehensive database of transactions in municipal bonds, we investigate the volume-volatility relationship in the muni market. We find a positive relationship between the number of transactions and a bond's price volatility. In contrast to previous studies, we find a negative relationship between average deal size and price volatility. These results are found to be robust throughout the sample. Our results are inconsistent with current theoretical models of the volume-volatility relationship. These inconsistencies may arise because current models fail to account for the effects ...
Working Paper
A real options approach to housing investment
In this paper, we study investments by existing homeowners to improve their homes. The value of a house is modeled as the expected net present value of a perpetual stream of service flows emanating from the attributes of the house. An important innovation in our model is that the set of house attributes evolves over time according to the investment decisions of the homeowner. The homeowner's decisions to invest in house attributes are modeled as real options. Our model of investment embeds a multi-factor term structure model and a general model of the evolution of service flows. We employ ...
Working Paper
Insolvency or liquidity squeeze? Explaining very short-term corporate yield spreads
In this paper, we first document some stylized facts about very short-term and long-term corporate yield spreads. We find that short-term spreads are sizable, and the correlations between many firms' short-term and long-term yield spreads are at times negative. We then develop a structural model that generates levels and correlations of short-term and long-term spreads that are more consistent with what we observe. The model allows for the possibility of payment delays when a firm's liquid asset position deteriorates. Payment delays generate sizable short-term debt spreads because the ...
Working Paper
Getting bad news out early: does it really help stock prices?
In this paper, we examine the stock price benefit of meeting or beating earnings expectations. Using a general methodology, we find no evidence that the timing of earnings news has any benefit for firms' stock returns. In fact, in many cases we find firms attempting to engineer positive earnings surprises by beating down expectations only to discover that their efforts are counterproductive. Our results appear to overturn the findings of previous authors who, using less general methodologies, have suggested that firms can boost their stock returns by getting bad news out early. Our results ...
Working Paper
Nonparametric estimation of multifactor continuous time interest rate models
This paper studies the finite sample properties of the kernel regression method of Boudoukh et al. (1998) for estimating multifactor continuous-time term structure models. Monte Carlo simulations are employed, with a grid-search technique to find the optimal kernel bandwidth. The estimator exhibits truncation and correlated residuals biases near the boundaries of the data. However, the variance of the estimator is so high that the biases are unlikely to be relevant from a hypothesis testing point of view. The performance of the estimator is also studied under model misspecification. ...
Working Paper
The term structure of commercial paper rates
This paper tests the expectations hypothesis in the market for commercial paper. Our main dataset, which is new to the literature, consists of daily indexes constructed from the actual market yields for nearly all commercial paper issued by U.S. corporations between January 1998 and August 2003. We show that the term premia built into commercial paper yields rise dramatically at year-end, causing the expectations hypothesis to be rejected. However, once we control for these predictable year-end effects, we find the reverse--that commercial paper yields largely conform with the expectations ...