In the present study, we investigate the market weak efficiency hypothesis (MEH) in the case of the Tunisian exchange market. For this aim, we use fractional cointegration tests based essentially on estimation of an error correction bivariate ARFIMA model. The cointegration tests are conducted...

In a series of papers based on analogies with statistical physics models, we have proposed that most financial crashes are the climax of so-called log-periodic power law signatures (LPPS) associated with speculative bubbles. In addition, a large body of empirical evidence supporting this...

We study the effect of a sovereign credit rating change of one country on the sovereign credit spreads of other countries from 1991 to 2000. We find evidence of spillover effects, that is, a ratings change in one country has a significant effect on sovereign credit spreads of other countries....

This work is primarily focused on the settlement between the SEC and Goldman Sachs of July 2010 related to the structuring and marketing of a Collateralised Debt Obligation (CDO) known as Abacus 2007-AC1. A thorough discussion of this case leads to analyze the idea of a imposing a fiduciary duty...

The authors analyze the structure of the market quotation of financial assets and come to the conclusion that one of its components is a financial asset identical with a commercial credit. Hence, in terms of the Islamic financial system any financial asset is inappropriate for investment because...

This work is primarily focused on the settlement between the SEC and Goldman Sachs of July 2010 related to the structuring and marketing of a Collateralised Debt Obligation (CDO) known as Abacus 2007-AC1. A thorough discussion of this case leads to analyze the idea of a imposing a fiduciary duty...

Focusing on five major emerging markets (EM), I investigate the interactions between credit default swap (CDS) premiums, foreign exchange (FX) parities, local currency government bond (LCB) spreads, and national stock market indices over the period 4/2/2007 to 8/27/2009. Empirical analysis...

Momentum strategies deliver positive profits in a variety of market and asset classes with one glaring exception - Japan. The failure of momentum in Japan has led some to call into question momentum's viability, suggesting that perhaps momentum's success elsewhere may be the result of data...

This study examines the relation between asset liquidity and stock liquidity across 47 countries. In support of the valuation uncertainty hypothesis, we find that firms with greater asset liquidity on average have higher stock liquidity. More importantly, our study shows that asset liquidity...

We examine how regularly scheduled macroeconomic announcements for the U.S., Germany and the euro area affect the German stock market, using high–frequency, minute–by–minute DAX data. Our study extends the literature on high–frequency announcement effects in several ways. First, we...