We consider an investor who faces parameter uncertainty in a continuous-time financial market. We model the investor's preference by a power utility function leading to constant relative risk aversion. We show that the loss in expected utility is large when using a simple plug-in strategy for...

This paper proposes the new concept of stochastic leverage in stochastic volatility models.Stochastic leverage refers to a stochastic process which replaces the classical constant correlation parameter between the asset return and the stochastic volatility process. We provide a systematic...

We analyse the consequences of conservative portfolio compression, i.e., netting cycles in financial networks, on systemic risk. We show that the recovery rate in case of default plays a significant role in determining whether portfolio compression is potentially beneficial. If recovery rates of...