Starting from the Merton framework for firm defaults, we provide the analytics and robustness of the relationship between default correlations. We show that loans with higher default probabilities will not only have higher variances but also higher correlations between loans. As a consequence,...

This interdisciplinary paper explains how mathematical techniques of stochastic optimal control can be applied to the recent subprime mortgage crisis. Why did the financial markets fail to anticipate the recent debt crisis, despite the large literature in mathematical finance concerning optimal...

Diversification benefits depend on the correlation between assets. Unfortunately, asset correlation increases when it is most needed. We examine bond correlation using a broad sample of US corporate bonds. We find bond correlation to be higher during the financial crisis in 2008. Increased bond...

The current financial market crisis has impressively demonstrated the importance of an effective credit risk management for financial institutions. At the same time, the use and the valuation of credit derivatives has been widely criticised as a result of the crisis. Over the past decade, credit...

Robert C. Merton is the School of Management Distinguished Professor of Finance at Massachusetts Institute of Technology, and the John and Natty McArthur University Professor Emeritus at Harvard University. Merton received the Alfred Nobel Memorial Prize in Economic Sciences in 1997 for a new...

Structured products like collateralized loan obligations (CLOs) tend to offer significantly higher yield spreads than corporate bonds with the same rating. At the same time, empirical evidence does not indicate that this higher yield is reduced by higher default losses of CLOs. The evidence thus...

Spillover effects from equity momentum to credit markets have been shown to lead to excessive premia and, simultaneously, reduced risk measures in credit securities. Here, we present an intuitive theory for this anomaly based on the premise that equity momentum drives leverage to invoke rating...

This paper examines the association between the default risk of foreign bank subsidiaries in developing countries and their parents during the global financial crisis, with the purpose of determining the size and sign of this correlation and, more importantly, understanding what factors can help...

As stress testing becomes more and more widespread as a risk measurement tool of choice, new questions are formulated about its applications to portfolio management. One of the most important ones for fund managers is: ‘How do we analyze results of stress tests for benchmarked portfolios?' We...

In this paper, we establish a comparison between one of the most traded financial derivatives in the markets, the so-called catastrophe bonds (abbreviated as cat bonds) and the corporate bonds. In the first section, we start from a brief definition as well as some basic concepts. In section two,...