Over the periods 1998-2002 and 2009-2011, the S&P-500 Index went from persistence to anti-persistence mode, as measured by the Hurst index H. To uncover the reasons that characterize such a change, this paper uses a simple method that consists in treating quasi self-similar segments of the Index...

Optimal execution of large orders is examined within the technical framework of High-Frequency Trading (HFT). A sample model is proposed, which extends an existing strategy through HFT means like time slicing with random splitting of the order volume and time shifting. As this strategy brings...

Efficient Market Hypothesis states that financial markets react instantaneous and unbiased to new information. However, in the last decades empirical researches revealed some anomalies in investors reactions to the events that caused shocks on the financial markets. There are two main hypotheses...

Using a GARCH model, we analyze the influence of U.S. monetary policy action and communication on the price volatility of commodities for the period 1998–2009. We find, first, that U.S. monetary policy events have an economically significant impact on price volatility. Second, expected target...

Why companies give up to substantial sums of money when, durring an Initial Public Offer (IPO), they sell securities at a lower price, compared to the one obtained at the end of the first trading session, is an intensely debated question in the literature. After we systematize the main theories...

This article was started with the theoretical approach of the general economic crisis, the increase/decrease model, by using the process of the money becoming, merchandise money and fiat money. During the time of fiat money there was a break between the material substances from the symbolic...

The present work proposes to realize a complex research of the investment in view of current conditions characterized by a global economic crisis. A special attention will be given to the opportunity and the efficiency of the investment as an instrument in the management decision for the...

The main advantages of a laboratory financial market with respect to field data are: (i) it allows us a perfect monitoring of the available information to each subject at any moment in time, and (ii) it gives us the possibility of recording subjects' trading activity in the market. In our...

In this paper, we provide evidence on two alternative mechanisms of interaction between returns and volatilities: the leverage effect and the volatility feedback effect. We stress the importance of distinguishing between realized volatility and implied volatility, and find that implied...

We investigate the relation between aggregate trading imbalances and interest rates in the Euro money market. We use data for OTC contracts as well as information from the major electronic trading platform in Europe to study the presence of cointegration between trading pressures and money...