This paper studies a novel approach for managing macroeconomic volatility in developing countries based upon dynamic portfolio optimisation. As part of this study, we develop a sovereign risk management model in the context of an Asset-Liability Management (ALM) framework. First, we solve the...

We investigate two alternative explanations why men may hold more stocks than women. Apart from a gender difference in risk aversion, gender differences in either optimism or in perceived risk of financial markets might cause men to hold more risky assets. Our results show that men tend to be...

Hedge fund managers are subject to several non-linear incentives: (a) performance fee options (call); (b) equity investor's redemption options (put); (c) prime broker contracts allowing for forced deleverage (put). The interaction of these option-like incentives affects optimal leverage ex-ante,...

Using close to 800,000 transactions by 66,000 households in the United States and close to 2,000,000 transactions by 303,000 households in Finland, this paper shows that individual investors with longer holding periods choose to hold less liquid stocks in their portfolios, consistent with Amihud...

Hedge fund managers are subject to several non-linear incentives: (a) performance fee options (call); (b) equity investor's redemption options (put); (c) prime broker contracts allowing for forced deleverage (put). The interaction of these option-like incentives affects optimal leverage ex-ante,...

Robinhood (RH) investors increased their holdings in the March 2020 COVID bear market, indicating an absence of collective panic and margin calls. This steadfastness was rewarded in the subsequent bull market. Despite unusual interests in some “experience” stocks (e.g., cannabis stocks),...

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,...

Using a unique data set on German banks' sector specific loan exposures to the real economy and the corresponding write-offs and write-downs, we examine the impact of loan portfolio sector concentration on credit risk. By controlling for common risk factors, we separate the bank-specific...

Bei der Kreditrisikobewertung müssen die Parameter Ausfallwahrscheinlichkeit und korrelation geschätzt werden. Diese Schätzung erfolgt unter Unsicherheit. In der Literatur werden asymptotische Konfidenzregionen diskutiert, um diese Unsicherheit bei der simultanen Schätzung beider Parameter...

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...