Paweł Majdosz

On the Empirical Linkages between Stock Prices and Trading Activity on the German Stock Market

In this study the joint dynamics between stock prices and trading volume are investigated using data from the German stock market. Our results indicate no relations (contemporaneous as well as dynamic) between return levels and trading volume but strong linkages between return volatility and volume data. On including trading volume in the conditional volatility framework (GARCH-type) we provide empirical evidence for the importance of volume data as an indicator for the flow of information on the market. Applying Granger’s test for causality we detect also feedback relations between trading volume and return volatility. These findings corroborate our assumption that trading volume indirectly contains information about stock prices due to its relation to return volatility.

Interfund linkage analysis: the case of the polish pension fund sector

Abstract Although fund activities whose target is to attract the members of rivals would seem to be very important for a proper evaluation of pension fund achievements, this topic has not been looked at by researchers. This paper presents an approach to assess the interfund effects of savings transfers based upon Polish tables of transfers published by the KNUiFE over the period from the fourth quarter of 2001 to the first quarter of 2004. Some useful indicators are suggested. By means of these indicators a taxonomy of pension funds operating in Poland was carried out. We also find which transfers of savings are the most important, i.e. which changes in the relative level of such transfers cause the largest perturbations in the whole pension fund sector.