The concept of a market portfolio plays an important role in many financial theories and models. Knowledge of each asset's share of the invested capital markets is both useful information and a good starting point for investors considering the appropriate allocation to the asset. In our latest...

Investing in financial securities inevitably involves risks on the one hand and opportunities on the other hand. This thesis bundles four different studies on risks and/or opportunities in financial markets. In one study, we examine the cross-sectional explanatory power of different...

We consider a model where investors can invest directly or search for an asset manager, information about assets is costly, and managers charge an endogenous fee. The efficiency of asset prices is linked to the efficiency of the asset management market: if investors can find managers more...

In this paper we introduce a new jump-diffusion model for stock prices, which takes into account over and under-reaction of the market to incoming news. The jumps' impact on the assets dynamics is twofold: on one hand we use a Poisson process as a driver to obtain discontinuous trajectories and...

The profitability of a trading system based on the momentum-like effects of price jumps was tested on the time series of 7 assets (EUR/USD, GBP/USD, USD/CHF and USD/JPY exchange rates and Light Crude Oil, E-Mini S&P 500 and VIX Futures), in each case for 7 different frequencies (ranging from...

This paper investigates to what extent low-income developing countries (LIDCs) characterized as frontier markets (FMs) have begun to be subject to capital flows dynamics typically associated with emerging markets (EMs). Using a sample of developing countries covering the period 2000-14, we show...

A rational-expectations equilibrium with positive demand for financial information does exist under fully revealing asset price - contrary to a wide-held conjecture. Generalizing the common additive signal-return model with CARA utility to the family of distributions with moment generating...

We construct a sentiment index with the incorporation of representative proxies in the Taiwan Stock Market and investigate the application of a cross-section of stock returns. The major contribution of the study is that the huge Chinese financial news related to each listed stock is collected...

We analyze the dispersion of month-end prices simultaneously placed on identical corporate bonds by different US mutual fund managers before and after initiations of TRACE and introductions of issuers into Markit's CDS database. Disseminated bonds show large and statistically significant...