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Liquidity, leverage, and Lehman: A structural analysis of financial institutions in crisis

Journal of Banking & Finance 2014 45, 117-139
This paper presents a flexible, lattice-based structural credit risk model that uses equity market information and a detailed depiction of a financial institution’s liability structure to analyze default risk. The model is applied to examine the term structure of default probabilities for Lehman Brothers prior to its demise. The results indicate, as early as March, that the firm would likely lose access to external capital within two years. The model can be used as both a diagnostic tool for the early detection of financial distress and a prescriptive tool for addressing the sources of risk in large, complex financial institutions.

The impact of credit rating announcements on credit default swap spreads

Journal of Banking & Finance 2013 37(6), 2011-2030
We document the ability of the credit default swap (CDS) market to anticipate favorable as well as unfavorable credit rating change (RC) announcements based on more extensive samples of credit rating events and CDS spreads than previous studies. We obtain four new results. In contrast to prior published studies, we find that corporate RC upgrades do have a significant impact on CDS spreads even though they are still not as well anticipated as downgrades. Second, CreditWatch (CW) and Outlook (OL) announcements, after controlling for prior credit rating events, lead to significant CARs at the time positive CW and OL credit rating events are announced. Third, we extend prior results by showing that changes in CDS spreads for non-investment-grade credits contain information useful for estimating the probability of negative credit rating events. Fourth, we find that the CDS spread impact of upgrades but not downgrades is magnified during recessions and that upgrades and downgrades also differ as to the impact of simultaneous CW/OL announcements, investment-grade/speculative-grade crossovers, current credit rating, market volatility, and industry effects.

An Explicit, Multi-Factor Credit Default Swap Pricing Model with Correlated Factors

Journal of Financial and Quantitative Analysis 2008 43(1), 123-160
With the recent significant growth in the single-name credit default swap (CDS) market has come the need for accurate and computationally efficient models to value these instruments. While the model developed by Duffie, Pan, and Singleton (2000) can be used, the solution is numerical (solving a series of ordinary differential equations) rather than explicit. In this paper, we provide an explicit solution to the valuation of a credit default swap when the interest rate and the hazard rate are correlated by using the “change of measure” approach and solving a bivariate Riccati equation. CDS transaction data for the period 2/15/2000 through 4/8/2003 for 60 firms are used to test both the goodness of fit of the model and provide estimates of the influence of economic variables in the market for credit-risky bonds.

The liquidity impact on firm values: The evidence of Taiwan's banking industry

Journal of Banking & Finance 2017 82, 191-202
Liquidity plays an important role in financial markets, especially during a financial crisis. New Basel III regulatory framework highlights the importance of liquidity risk management implemented by financial institutions. Moreover, updated International Financial Reporting Standards (IFRS) require the improvements about fair value measurements and reinforce existing principles for disclosures about the liquidity risk associated with financial instruments. Using the liquidity discount model of Chen (2012), we are able to empirically classify Taiwan's financial institutions into three liquidity categories: safe, crisis contagious and vulnerable. Our findings can serve as an early warning signal for liquidity calamity. In addition, we investigate what factors affect firm-specific liquidity discounts for these institutions and conduct a sub-period analysis, which examines whether there is significant liquidity discounts changes before and after the 2008 financial crisis. We find that liquidity discounts change substantially during the financial crisis. Furthermore, we find that liquidity discounts can be attributed to some firm-specific performance.

Optimal strike prices of stock options for effort-averse executives

Journal of Banking & Finance 2008 32(2), 229-239
This paper evaluates the common practice of setting the strike prices of executive option plans at-the-money. Hall and Murphy [Hall, Brian, Murphy, Kevin J., 2000. Optimal exercise prices for executive stock options. American Economic Review 90 (2), 209–214] claim this practice to be optimal since it maximizes the sensitivity of compensation to firm performance. However, they do not incorporate effort and the possibility that managers are effort-averse into their model. We revisit this question while explicitly introducing these factors and allowing the reward package to include fixed wages, options, and stock grants. We simulate the manager’s effort choice and compensation as well as the value of shareholders’ equity under alternative compensation schemes, and identify schemes that are optimal. Our simulations indicate that, when abstracting from tax considerations, it is optimal to award managers with options that will most likely be highly valuable (i.e., substantially in-the-money) on their expiration date. Prior to 2006, the tax code and financial reporting standards provided incentives to award options that are closer to the money when issued than the options that were optimal in the absence of these considerations. Recent tax and reporting changes voided these incentives and thus we predict that these changes will induce firms to issue options with lower strike prices than those that were issued prior to 2006.