The use of probability of default estimates to assess the risks of a credit portfolio should not ignore estimation uncertainty. The latter can be quantified by confidence intervals. But assumptions about dependencies of these intervals are inconsistent with assumptions of conventional credit...

Lending specialization on certain industry sectors can have opposing effects on monitoring (including screening) abilities and on the sectoral concentration risk of a credit portfolio. In this paper, we examine in the first part if monitoring abilities of German cooperative banks and savings...

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...

This study investigates whether banks and insurance corporations perform regulatory arbitrage by buying bonds with inflated credit ratings. We argue that credit rating based capital requirements incentivize banks and insurance corporations to hold more bonds with inflated credit ratings. We...

Despite intense criticism, agency credit ratings are still widely used in regulation and risk management. One possible alternative is to replace them with quantitative default risk measures. For US data, I find that systemically relevant losses from corporate defaults are mostly smaller if...

Insurance companies often follow highly correlated investment strategies. As major investors in corporate bonds, their investment commonalities subject investors to fire-sale risk when regulatory restrictions prompt widespread divestment of a bond following a rating downgrade. Reflective of...

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 investigates whether bond fund managers with credit rating experience outperform their peers. We document that bond fund managers who previously worked in credit rat- ing agencies on average create higher risk-adjusted returns than their peers by 11-16 bps per month, with better...

It is a matter of debate in how far credit ratings contribute to allocative efficiency or to excessive volatility of asset prices and cross-border capital flows. Yet it is generally taken for granted that ratings play a significant role in the transnationalization of financial relations. This...

It is a matter of debate in how far credit ratings contribute to allocative efficiency or to excessive volatility of asset prices and cross-border capital flows. Yet it is generally taken for granted that ratings play a significant role in the transnationalization of financial relations. This...