This study introduces a new asset pricing factor to capture both the effects of concentrated ownership and institutional development of in 61 international equity markets. The evidence suggests the new measure offers significant improvements over the size and book-to-market value three factor...

The purpose of the paper is to examine the effects of different trading systems, the open outcry and the electronic systems, which differ in the speed of dissemination of order flow information, on the relation between trading activity and conditional volatility, on the probability distribution...

The paper investigates the dynamics of price changes and information flow to the market in the Athens Stock Exchange in Greece using daily data over the period 1988 to 1993. A generalised autoregressive conditional heteroskedastic (GARCH) model in stock returns is shown to reflect time...