Identifying a successful mutual fund investment involves a crucial analysis of alternatives, all of which influence the true benefit of the investment. Major considerations must include performance, management and fees; which ultimately determine investment returns. Studies have shown that team...

This dissertation includes two different groups of objects in macroeconomics and financial economics. In macroeconomics, the aggregate investment fluctuation and its relation to an individual firm's behavior have been extensively studied for the past three decades. Most studies on the...

We test for and model the volatility jumps for three major indices of the Athens Stock Exchange (ASE). Using intra-day data we first construct several, state-of-the-art realized volatility estimators. We use these estimators to construct the jump components of volatility and perform various...

The purpose of this work is to empirically assess the validity of the Capital Asset Pricing Model (CAPM) in terms of how can it model an equity’s return. The goal of this work is not to challenge the theory behind CAPM, nor compare it to alternatives, but simply to test whether or not it is...