The distributional form of financial asset returns has important implications for the theoretical and empirical analyses in economics and finance. It is now a well-established fact that financial return distributions are empirically nonstationary, both in the weak and the strong sense. One first...

This paper investigates the efficiency of the two major stock indexes of the Iberian Peninsula, the Portuguese Stock Index (PSI-20) and the Spanish Stock Index (IBEX-35). We used daily data from January 1993 to September 2001 for the Portuguese stock index and daily data from October 1990 to...

We study a financial market adverse selection model where all agents are endowed with initial wealth and choose to invest as entrepreneurs or financiers, or not to invest. We show that often a lack of outside finance leads to the emergence of financial markets where availability of outside...

Recent changes in farm policy have renewed interest in using marketing strategies based on futures and options markets to enhance the income of field crop producers. This article reviews the literature surrounding the dominant academic theory of the behavior of futures and options markets, the...

The business media play an active role in influencing stock prices. Statistically significant excess returns at the time of the publication of stock recommendations have been documented many times. Frequently these abnormal gains begin to accumulate long before the publication date. In most...

A widely held belief in financial economics suggests that stock prices always adequately reflect all available information. Price movements away from fundamentals are assumed to occur only infrequently, if at all. „False“ prices are supposed to be corrected by the counter-actions of...

We consider the position management problem for an agent trading a mean- reverting asset. This problem arises in many statistical and fundamental arbitrage trading situations when the short-term returns on an asset are predictable but limited risk-bearing capacity does not allow to fully exploit...

The paper analyses the impact of the suspension of opening and closing call auctions by the National Stock Exchange of India in 1999. We compare volatility, efficiency and liquidity (VEL) of securities before and after suspension, and estimate the value of the auctions using an event study....

The link between informed trading and the bid-ask spread has been the focus of abundant literature and some authors feared that a large amount of informed trading might lead to shutdown of markets. We explore this issue using data from the Czech Republic. Our estimates confirm that the share of...

El presente trabajo pretende determinar si es posible desarrollar una estrategia de inversión exitosa en el mercado bursátil usando factores de riesgo no sistemático, tales como aquellos postulados por el análisis fundamental y el técnico. El trabajo se circunscribe así en el área de...