This dissertation consists of four essays exploring risk modeling and aggregation, with a particular focus on cyber risk in the insurance context. It aims to provide appropriate answers to research questions that arise from practical challenges on both the supply and demand sides of the...

This thesis contains three essays in the area of finance. The first essay investigates the impact of banks on corporate borrowers’ operating performance. The second essay analyzes the effect of short selling constraints of stocks on fund managers’ trading decisions. The last essay studies...

Variance risk premium is arguably one of the most important and robust risk premia documented in the academic finance. The first chapter of this thesis deals with variance risk on the FX market: therein, I recover risk-neutralized covariance matrices of currency returns and combine them with ex...

How do option and equity markets interact with each other? This is the central question that is answered from three different angles in this dissertation. The first Chapter discusses how option-implied information is incorporated into equity markets. Based on a novel rescaled option-implied...